for Journals by Title or ISSN
for Articles by Keywords
help

Publisher: John Wiley and Sons   (Total: 1579 journals)

 A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

        1 2 3 4 5 6 7 8 | Last   [Sort by number of followers]   [Restore default list]

Showing 1 - 200 of 1579 Journals sorted alphabetically
Abacus     Hybrid Journal   (Followers: 12, SJR: 0.48, h-index: 22)
About Campus     Hybrid Journal   (Followers: 5)
Academic Emergency Medicine     Hybrid Journal   (Followers: 65, SJR: 1.385, h-index: 91)
Accounting & Finance     Hybrid Journal   (Followers: 46, SJR: 0.547, h-index: 30)
ACEP NOW     Free   (Followers: 1)
Acta Anaesthesiologica Scandinavica     Hybrid Journal   (Followers: 51, SJR: 1.02, h-index: 88)
Acta Archaeologica     Hybrid Journal   (Followers: 153, SJR: 0.101, h-index: 9)
Acta Geologica Sinica (English Edition)     Hybrid Journal   (Followers: 3, SJR: 0.552, h-index: 41)
Acta Neurologica Scandinavica     Hybrid Journal   (Followers: 5, SJR: 1.203, h-index: 74)
Acta Obstetricia et Gynecologica Scandinavica     Hybrid Journal   (Followers: 15, SJR: 1.197, h-index: 81)
Acta Ophthalmologica     Hybrid Journal   (Followers: 5, SJR: 0.112, h-index: 1)
Acta Paediatrica     Hybrid Journal   (Followers: 56, SJR: 0.794, h-index: 88)
Acta Physiologica     Hybrid Journal   (Followers: 6, SJR: 1.69, h-index: 88)
Acta Polymerica     Hybrid Journal   (Followers: 9)
Acta Psychiatrica Scandinavica     Hybrid Journal   (Followers: 35, SJR: 2.518, h-index: 113)
Acta Zoologica     Hybrid Journal   (Followers: 6, SJR: 0.459, h-index: 29)
Acute Medicine & Surgery     Hybrid Journal   (Followers: 4)
Addiction     Hybrid Journal   (Followers: 35, SJR: 2.086, h-index: 143)
Addiction Biology     Hybrid Journal   (Followers: 13, SJR: 2.091, h-index: 57)
Adultspan J.     Hybrid Journal   (SJR: 0.127, h-index: 4)
Advanced Energy Materials     Hybrid Journal   (Followers: 26, SJR: 6.411, h-index: 86)
Advanced Engineering Materials     Hybrid Journal   (Followers: 26, SJR: 0.81, h-index: 81)
Advanced Functional Materials     Hybrid Journal   (Followers: 50, SJR: 5.21, h-index: 203)
Advanced Healthcare Materials     Hybrid Journal   (Followers: 13, SJR: 0.232, h-index: 7)
Advanced Materials     Hybrid Journal   (Followers: 258, SJR: 9.021, h-index: 345)
Advanced Materials Interfaces     Hybrid Journal   (Followers: 6, SJR: 1.177, h-index: 10)
Advanced Optical Materials     Hybrid Journal   (Followers: 5, SJR: 2.488, h-index: 21)
Advanced Science     Open Access   (Followers: 5)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 17, SJR: 2.729, h-index: 121)
Advances in Polymer Technology     Hybrid Journal   (Followers: 13, SJR: 0.344, h-index: 31)
Africa Confidential     Hybrid Journal   (Followers: 19)
Africa Research Bulletin: Economic, Financial and Technical Series     Hybrid Journal   (Followers: 12)
Africa Research Bulletin: Political, Social and Cultural Series     Hybrid Journal   (Followers: 9)
African Development Review     Hybrid Journal   (Followers: 34, SJR: 0.275, h-index: 17)
African J. of Ecology     Hybrid Journal   (Followers: 15, SJR: 0.477, h-index: 39)
Aggressive Behavior     Hybrid Journal   (Followers: 15, SJR: 1.391, h-index: 66)
Aging Cell     Open Access   (Followers: 10, SJR: 4.374, h-index: 95)
Agribusiness : an Intl. J.     Hybrid Journal   (Followers: 6, SJR: 0.627, h-index: 14)
Agricultural and Forest Entomology     Hybrid Journal   (Followers: 15, SJR: 0.925, h-index: 43)
Agricultural Economics     Hybrid Journal   (Followers: 45, SJR: 1.099, h-index: 51)
AIChE J.     Hybrid Journal   (Followers: 30, SJR: 1.122, h-index: 120)
Alcoholism and Drug Abuse Weekly     Hybrid Journal   (Followers: 7)
Alcoholism Clinical and Experimental Research     Hybrid Journal   (Followers: 7, SJR: 1.416, h-index: 125)
Alimentary Pharmacology & Therapeutics     Hybrid Journal   (Followers: 33, SJR: 2.833, h-index: 138)
Alimentary Pharmacology & Therapeutics Symposium Series     Hybrid Journal   (Followers: 3)
Allergy     Hybrid Journal   (Followers: 50, SJR: 3.048, h-index: 129)
Alternatives to the High Cost of Litigation     Hybrid Journal   (Followers: 3)
American Anthropologist     Hybrid Journal   (Followers: 139, SJR: 0.951, h-index: 61)
American Business Law J.     Hybrid Journal   (Followers: 24, SJR: 0.205, h-index: 17)
American Ethnologist     Hybrid Journal   (Followers: 90, SJR: 2.325, h-index: 51)
American J. of Economics and Sociology     Hybrid Journal   (Followers: 28, SJR: 0.211, h-index: 26)
American J. of Hematology     Hybrid Journal   (Followers: 33, SJR: 1.761, h-index: 77)
American J. of Human Biology     Hybrid Journal   (Followers: 12, SJR: 1.018, h-index: 58)
American J. of Industrial Medicine     Hybrid Journal   (Followers: 16, SJR: 0.993, h-index: 85)
American J. of Medical Genetics Part A     Hybrid Journal   (Followers: 16, SJR: 1.115, h-index: 61)
American J. of Medical Genetics Part B: Neuropsychiatric Genetics     Hybrid Journal   (Followers: 4, SJR: 1.771, h-index: 107)
American J. of Medical Genetics Part C: Seminars in Medical Genetics     Partially Free   (Followers: 6, SJR: 2.315, h-index: 79)
American J. of Physical Anthropology     Hybrid Journal   (Followers: 37, SJR: 1.41, h-index: 88)
American J. of Political Science     Hybrid Journal   (Followers: 271, SJR: 5.101, h-index: 114)
American J. of Primatology     Hybrid Journal   (Followers: 15, SJR: 1.197, h-index: 63)
American J. of Reproductive Immunology     Hybrid Journal   (Followers: 3, SJR: 1.347, h-index: 75)
American J. of Transplantation     Hybrid Journal   (Followers: 17, SJR: 2.792, h-index: 140)
American J. on Addictions     Hybrid Journal   (Followers: 9, SJR: 0.843, h-index: 57)
Anaesthesia     Hybrid Journal   (Followers: 132, SJR: 1.404, h-index: 88)
Analyses of Social Issues and Public Policy     Hybrid Journal   (Followers: 10, SJR: 0.397, h-index: 18)
Analytic Philosophy     Hybrid Journal   (Followers: 16)
Anatomia, Histologia, Embryologia: J. of Veterinary Medicine Series C     Hybrid Journal   (Followers: 3, SJR: 0.295, h-index: 27)
Anatomical Sciences Education     Hybrid Journal   (Followers: 1, SJR: 0.633, h-index: 24)
Andrologia     Hybrid Journal   (Followers: 2, SJR: 0.528, h-index: 45)
Andrology     Hybrid Journal   (Followers: 2, SJR: 0.979, h-index: 14)
Angewandte Chemie     Hybrid Journal   (Followers: 172)
Angewandte Chemie Intl. Edition     Hybrid Journal   (Followers: 216, SJR: 6.229, h-index: 397)
Animal Conservation     Hybrid Journal   (Followers: 38, SJR: 1.576, h-index: 62)
Animal Genetics     Hybrid Journal   (Followers: 8, SJR: 0.957, h-index: 67)
Animal Science J.     Hybrid Journal   (Followers: 6, SJR: 0.569, h-index: 24)
Annalen der Physik     Hybrid Journal   (Followers: 5, SJR: 1.46, h-index: 40)
Annals of Anthropological Practice     Partially Free   (Followers: 2, SJR: 0.187, h-index: 5)
Annals of Applied Biology     Hybrid Journal   (Followers: 7, SJR: 0.816, h-index: 56)
Annals of Clinical and Translational Neurology     Open Access   (Followers: 1)
Annals of Human Genetics     Hybrid Journal   (Followers: 9, SJR: 1.191, h-index: 67)
Annals of Neurology     Hybrid Journal   (Followers: 47, SJR: 5.584, h-index: 241)
Annals of Noninvasive Electrocardiology     Hybrid Journal   (Followers: 2, SJR: 0.531, h-index: 38)
Annals of Public and Cooperative Economics     Hybrid Journal   (Followers: 9, SJR: 0.336, h-index: 23)
Annals of the New York Academy of Sciences     Hybrid Journal   (Followers: 5, SJR: 2.389, h-index: 189)
Annual Bulletin of Historical Literature     Hybrid Journal   (Followers: 13)
Annual Review of Information Science and Technology     Hybrid Journal   (Followers: 14)
Anthropology & Education Quarterly     Hybrid Journal   (Followers: 25, SJR: 0.72, h-index: 31)
Anthropology & Humanism     Hybrid Journal   (Followers: 17, SJR: 0.137, h-index: 3)
Anthropology News     Hybrid Journal   (Followers: 15)
Anthropology of Consciousness     Hybrid Journal   (Followers: 11, SJR: 0.172, h-index: 5)
Anthropology of Work Review     Hybrid Journal   (Followers: 11, SJR: 0.256, h-index: 5)
Anthropology Today     Hybrid Journal   (Followers: 90, SJR: 0.545, h-index: 15)
Antipode     Hybrid Journal   (Followers: 47, SJR: 2.212, h-index: 69)
Anz J. of Surgery     Hybrid Journal   (Followers: 7, SJR: 0.432, h-index: 59)
Anzeiger für Schädlingskunde     Hybrid Journal   (Followers: 1)
Apmis     Hybrid Journal   (Followers: 1, SJR: 0.855, h-index: 73)
Applied Cognitive Psychology     Hybrid Journal   (Followers: 69, SJR: 0.754, h-index: 69)
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 7, SJR: 0.632, h-index: 58)
Applied Psychology     Hybrid Journal   (Followers: 145, SJR: 1.023, h-index: 64)
Applied Psychology: Health and Well-Being     Hybrid Journal   (Followers: 49, SJR: 0.868, h-index: 13)
Applied Stochastic Models in Business and Industry     Hybrid Journal   (Followers: 5, SJR: 0.613, h-index: 24)
Aquaculture Nutrition     Hybrid Journal   (Followers: 14, SJR: 1.025, h-index: 55)
Aquaculture Research     Hybrid Journal   (Followers: 31, SJR: 0.807, h-index: 60)
Aquatic Conservation Marine and Freshwater Ecosystems     Hybrid Journal   (Followers: 36, SJR: 1.047, h-index: 57)
Arabian Archaeology and Epigraphy     Hybrid Journal   (Followers: 11, SJR: 0.453, h-index: 11)
Archaeological Prospection     Hybrid Journal   (Followers: 12, SJR: 0.922, h-index: 21)
Archaeology in Oceania     Hybrid Journal   (Followers: 13, SJR: 0.745, h-index: 18)
Archaeometry     Hybrid Journal   (Followers: 27, SJR: 0.809, h-index: 48)
Archeological Papers of The American Anthropological Association     Hybrid Journal   (Followers: 15, SJR: 0.156, h-index: 2)
Architectural Design     Hybrid Journal   (Followers: 25, SJR: 0.261, h-index: 9)
Archiv der Pharmazie     Hybrid Journal   (Followers: 4, SJR: 0.628, h-index: 43)
Archives of Drug Information     Hybrid Journal   (Followers: 4)
Archives of Insect Biochemistry and Physiology     Hybrid Journal   (SJR: 0.768, h-index: 54)
Area     Hybrid Journal   (Followers: 12, SJR: 0.938, h-index: 57)
Art History     Hybrid Journal   (Followers: 238, SJR: 0.153, h-index: 13)
Arthritis & Rheumatology     Hybrid Journal   (Followers: 51, SJR: 1.984, h-index: 20)
Arthritis Care & Research     Hybrid Journal   (Followers: 27, SJR: 2.256, h-index: 114)
Artificial Organs     Hybrid Journal   (Followers: 1, SJR: 0.872, h-index: 60)
ASHE Higher Education Reports     Hybrid Journal   (Followers: 14)
Asia & the Pacific Policy Studies     Open Access   (Followers: 15)
Asia Pacific J. of Human Resources     Hybrid Journal   (Followers: 313, SJR: 0.494, h-index: 19)
Asia Pacific Viewpoint     Hybrid Journal   (Followers: 1, SJR: 0.616, h-index: 26)
Asia-Pacific J. of Chemical Engineering     Hybrid Journal   (Followers: 8, SJR: 0.345, h-index: 20)
Asia-pacific J. of Clinical Oncology     Hybrid Journal   (Followers: 6, SJR: 0.554, h-index: 14)
Asia-Pacific J. of Financial Studies     Hybrid Journal   (SJR: 0.241, h-index: 7)
Asia-Pacific Psychiatry     Hybrid Journal   (Followers: 4, SJR: 0.377, h-index: 7)
Asian Economic J.     Hybrid Journal   (Followers: 8, SJR: 0.234, h-index: 21)
Asian Economic Policy Review     Hybrid Journal   (Followers: 4, SJR: 0.196, h-index: 12)
Asian J. of Control     Hybrid Journal   (SJR: 0.862, h-index: 34)
Asian J. of Endoscopic Surgery     Hybrid Journal   (SJR: 0.394, h-index: 7)
Asian J. of Organic Chemistry     Hybrid Journal   (Followers: 5, SJR: 1.443, h-index: 19)
Asian J. of Social Psychology     Hybrid Journal   (Followers: 5, SJR: 0.665, h-index: 37)
Asian Politics and Policy     Hybrid Journal   (Followers: 12, SJR: 0.207, h-index: 7)
Asian Social Work and Policy Review     Hybrid Journal   (Followers: 5, SJR: 0.318, h-index: 5)
Asian-pacific Economic Literature     Hybrid Journal   (Followers: 5, SJR: 0.168, h-index: 15)
Assessment Update     Hybrid Journal   (Followers: 4)
Astronomische Nachrichten     Hybrid Journal   (Followers: 2, SJR: 0.701, h-index: 40)
Atmospheric Science Letters     Open Access   (Followers: 29, SJR: 1.332, h-index: 27)
Austral Ecology     Hybrid Journal   (Followers: 14, SJR: 1.095, h-index: 66)
Austral Entomology     Hybrid Journal   (Followers: 9, SJR: 0.524, h-index: 28)
Australasian J. of Dermatology     Hybrid Journal   (Followers: 8, SJR: 0.714, h-index: 40)
Australasian J. On Ageing     Hybrid Journal   (Followers: 7, SJR: 0.39, h-index: 22)
Australian & New Zealand J. of Statistics     Hybrid Journal   (Followers: 13, SJR: 0.275, h-index: 28)
Australian Accounting Review     Hybrid Journal   (Followers: 4, SJR: 0.709, h-index: 14)
Australian and New Zealand J. of Family Therapy (ANZJFT)     Hybrid Journal   (Followers: 3, SJR: 0.382, h-index: 12)
Australian and New Zealand J. of Obstetrics and Gynaecology     Hybrid Journal   (Followers: 46, SJR: 0.814, h-index: 49)
Australian and New Zealand J. of Public Health     Hybrid Journal   (Followers: 11, SJR: 0.82, h-index: 62)
Australian Dental J.     Hybrid Journal   (Followers: 7, SJR: 0.482, h-index: 46)
Australian Economic History Review     Hybrid Journal   (Followers: 4, SJR: 0.171, h-index: 12)
Australian Economic Papers     Hybrid Journal   (Followers: 29, SJR: 0.23, h-index: 9)
Australian Economic Review     Hybrid Journal   (Followers: 6, SJR: 0.357, h-index: 21)
Australian Endodontic J.     Hybrid Journal   (Followers: 3, SJR: 0.513, h-index: 24)
Australian J. of Agricultural and Resource Economics     Hybrid Journal   (Followers: 3, SJR: 0.765, h-index: 36)
Australian J. of Grape and Wine Research     Hybrid Journal   (Followers: 5, SJR: 0.879, h-index: 56)
Australian J. of Politics & History     Hybrid Journal   (Followers: 14, SJR: 0.203, h-index: 14)
Australian J. of Psychology     Hybrid Journal   (Followers: 18, SJR: 0.384, h-index: 30)
Australian J. of Public Administration     Hybrid Journal   (Followers: 407, SJR: 0.418, h-index: 29)
Australian J. of Rural Health     Hybrid Journal   (Followers: 5, SJR: 0.43, h-index: 34)
Australian Occupational Therapy J.     Hybrid Journal   (Followers: 71, SJR: 0.59, h-index: 29)
Australian Psychologist     Hybrid Journal   (Followers: 12, SJR: 0.331, h-index: 31)
Australian Veterinary J.     Hybrid Journal   (Followers: 19, SJR: 0.459, h-index: 45)
Autism Research     Hybrid Journal   (Followers: 32, SJR: 2.126, h-index: 39)
Autonomic & Autacoid Pharmacology     Hybrid Journal   (SJR: 0.371, h-index: 29)
Banks in Insurance Report     Hybrid Journal   (Followers: 1)
Basic & Clinical Pharmacology & Toxicology     Hybrid Journal   (Followers: 10, SJR: 0.539, h-index: 70)
Basic and Applied Pathology     Open Access   (Followers: 2, SJR: 0.113, h-index: 4)
Basin Research     Hybrid Journal   (Followers: 5, SJR: 1.54, h-index: 60)
Bauphysik     Hybrid Journal   (Followers: 2, SJR: 0.194, h-index: 5)
Bauregelliste A, Bauregelliste B Und Liste C     Hybrid Journal  
Bautechnik     Hybrid Journal   (Followers: 1, SJR: 0.321, h-index: 11)
Behavioral Interventions     Hybrid Journal   (Followers: 9, SJR: 0.297, h-index: 23)
Behavioral Sciences & the Law     Hybrid Journal   (Followers: 24, SJR: 0.736, h-index: 57)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 9, SJR: 0.11, h-index: 5)
Beton- und Stahlbetonbau     Hybrid Journal   (Followers: 2, SJR: 0.493, h-index: 14)
Biochemistry and Molecular Biology Education     Hybrid Journal   (Followers: 6, SJR: 0.311, h-index: 26)
Bioelectromagnetics     Hybrid Journal   (Followers: 1, SJR: 0.568, h-index: 64)
Bioengineering & Translational Medicine     Open Access  
BioEssays     Hybrid Journal   (Followers: 10, SJR: 3.104, h-index: 155)
Bioethics     Hybrid Journal   (Followers: 14, SJR: 0.686, h-index: 39)
Biofuels, Bioproducts and Biorefining     Hybrid Journal   (Followers: 1, SJR: 1.725, h-index: 56)
Biological J. of the Linnean Society     Hybrid Journal   (Followers: 16, SJR: 1.172, h-index: 90)
Biological Reviews     Hybrid Journal   (Followers: 3, SJR: 6.469, h-index: 114)
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 42, SJR: 0.12, h-index: 1)
Biology of the Cell     Full-text available via subscription   (Followers: 9, SJR: 1.812, h-index: 69)
Biomedical Chromatography     Hybrid Journal   (Followers: 6, SJR: 0.572, h-index: 49)
Biometrical J.     Hybrid Journal   (Followers: 5, SJR: 0.784, h-index: 44)
Biometrics     Hybrid Journal   (Followers: 36, SJR: 1.906, h-index: 96)
Biopharmaceutics and Drug Disposition     Hybrid Journal   (Followers: 10, SJR: 0.715, h-index: 44)
Biopolymers     Hybrid Journal   (Followers: 18, SJR: 1.199, h-index: 104)
Biotechnology and Applied Biochemistry     Hybrid Journal   (Followers: 45, SJR: 0.415, h-index: 55)
Biotechnology and Bioengineering     Hybrid Journal   (Followers: 180, SJR: 1.633, h-index: 146)
Biotechnology J.     Hybrid Journal   (Followers: 14, SJR: 1.185, h-index: 51)
Biotechnology Progress     Hybrid Journal   (Followers: 39, SJR: 0.736, h-index: 101)
Biotropica     Hybrid Journal   (Followers: 20, SJR: 1.374, h-index: 71)
Bipolar Disorders     Hybrid Journal   (Followers: 9, SJR: 2.592, h-index: 100)
Birth     Hybrid Journal   (Followers: 37, SJR: 0.763, h-index: 64)
Birth Defects Research Part A : Clinical and Molecular Teratology     Hybrid Journal   (Followers: 2, SJR: 0.727, h-index: 77)
Birth Defects Research Part B: Developmental and Reproductive Toxicology     Hybrid Journal   (Followers: 5, SJR: 0.468, h-index: 47)
Birth Defects Research Part C : Embryo Today : Reviews     Hybrid Journal   (SJR: 1.513, h-index: 55)
BJOG : An Intl. J. of Obstetrics and Gynaecology     Partially Free   (Followers: 231, SJR: 2.083, h-index: 125)

        1 2 3 4 5 6 7 8 | Last   [Sort by number of followers]   [Restore default list]

Journal Cover Agricultural and Forest Entomology
  [SJR: 0.925]   [H-I: 43]   [15 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1461-9555 - ISSN (Online) 1461-9563
   Published by John Wiley and Sons Homepage  [1579 journals]
  • Linking climate change and insect pest distribution: an example using
           Agriotes ustulatus Shall. (Coleoptera: Elateridae)
    • Authors: Maja Čačija; Antonela Kozina, Jasminka Igrc Barčić, Renata Bažok
      Abstract: Agriotes ustulatus (Schaller, 1873) (Coleoptera: Elateridae) is an economically important agricultural pest. Recently, changes in the distribution and abundance of this species in Croatia have been established.The present study aimed: (i) to determine the abundance and dominance of A. ustulatus in four regions in Croatia; (ii) to test the effect of temperature and rainfall on dominance and distribution; and (iii) to determine the flight activity of the A. ustulatus adults (peak and swarming period).From 2001 until 2010, five Agriotes species were captured by pheromone traps placed in 17 fields within four counties. Differences in air temperature and rainfall were determined between regions.The highest dominance of A. ustulatus was recorded in the warmest eastern county and the species was classified as eudominant. High dominance was also observed in the western county, confirming that A. ustulatus occurs in higher population in this area. Species was subdominant where the mean air temperature was the lowest.The increase in dominance in the west could be explained by the significant positive correlation found between air temperature and dominance.The seasonal activity of the adults was from June to mid-August, with peak flight at the end of June.
      PubDate: 2017-10-16T01:50:59.327513-05:
      DOI: 10.1111/afe.12259
       
  • The first record of subtropical insects (Thysanoptera) in central Europe:
           long-distance transport of airborne thrips, applying three-dimensional
           backward trajectories
    • Authors: László Makra; Károly Bodnár, Andrea Fülöp, Szilvia Orosz, Ágnes Szénási, Zoltán Csépe, Gábor Jenser, Gábor Tusnády, Donát Magyar
      Abstract: The present study reports the first occurrence and flight period of three species, namely Scolothrips tenuipennis zur Strassen 1965, Frankliniella schultzei Trybom, 1910 and Zurstrassenia figuratus zur Strassen, 1968 (Thysanoptera: Thripidae), in Hungary. A fourth, undescribed species belonging to the genus Caliothrips was also captured.The distribution area of these species is North Africa and it is hypothesized that they are transported to Hungary via long-distance air currents.Data for a suction trap are examined in South–East Hungary, in the 3-year period 2002–2004 from May to September. A three-dimensional back-trajectory analysis based on the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) transport and dispersion model was performed for the observation days to determine the origin and path of air masses and evaluate of the possibility of long-distance transport of thrips species.Surprisingly, the analysis showed that only a few percent of the back trajectories originated or passed over North Africa. The results suggest that the captured thrips species could survive long-distance transport at low-level trajectories and establish new populations in Western Europe, the eastern part of Europe and Northern Central Europe, which together serve as source areas for the long-range transport of thrips to the target station.
      PubDate: 2017-10-12T04:18:36.476707-05:
      DOI: 10.1111/afe.12260
       
  • Interaction effects between local flower richness and distance to natural
           woodland on pest and beneficial insects in apple orchards
    • Authors: Manu E. Saunders; Gary W. Luck
      Abstract: Local and landscape factors interact to influence animal populations and, ultimately, crop yields in agroecosystems. Yet few studies have considered interactions and trade-offs between these factors within a single agroecosystem.We sampled insect communities (fruit-damaging pests and Diptera and Hymenoptera pollinator and natural enemy taxa) associated with focal apple trees in south-eastern Australian orchards across a single growing season. We also measured marketable fruit yields on netted (preventing access to vertebrates) and open branches on each focal tree. We focused on relationships with local (ground cover attributes) and landscape (proximity to natural woodland) factors.Importantly, we found that local flower richness in orchard understoreys may buffer the negative effects that isolation from natural woodland has on wild bee and natural enemy communities and the ecosystem services they provide.The results of the present study suggest that floral diversity may be more effective in supporting beneficial insects in crop interiors, rather than at edges near natural vegetation.More studies are needed that identify how local and landscape vegetation structure interact to influence communities of pest and beneficial taxa, and relevant ecosystem functions, in agroecosystems.
      PubDate: 2017-09-11T09:45:41.098681-05:
      DOI: 10.1111/afe.12258
       
  • Attraction of red turpentine beetle and other Scolytinae to ethanol,
           3-carene or ethanol + 3-carene in an Oregon pine forest
    • Authors: Rick G. Kelsey; Douglas J. Westlind
      Abstract: Red turpentine beetle Dendroctonus valens LeConte is a non-aggressive bark beetle in North America that attacks weakened or recently dead pines, as well as their fresh logs or stumps. Fire-injured ponderosa pines releasing stress-induced ethanol are often attacked. The oleoresin from these trees frequently contains 3-carene as a major component mixed with α- or β-pinene. 3-Carene lures usually attract more D. valens than α- or β-pinene lures or 1 : 1 : 1 mixtures, whereas the attraction of ethanol + 3-carene lures has never been tested.Funnel traps with ethanol, 3-carene or ethanol + 3-carene lures, and a no lure blank, were set-up as a randomized complete block design in a pine forest near La Pine, Oregon, U.S.A., from 23 April until 11 June 2015.Dendroctonus valens, Hylastes nigrinus, Hylurgops reticulatus, Hylurgops porosus and Hylastes gracilis exhibited similar responses, with highest numbers captured in traps with ethanol + 3-carene. The response by the first three species was confirmed as synergistic.Ips spp., Pityogenes spp., Gnathotrichus spp., Pachysquamus subcostulatus and Hylastes macer composed a second group whose numbers captured with ethanol lures were similar or greater than the 3-carene or ethanol + 3-carene lures. A reduced H. macer response to ethanol + 3-carene was confirmed as an interruption.
      PubDate: 2017-08-28T08:35:19.969722-05:
      DOI: 10.1111/afe.12257
       
  • Climate warming effects on grape and grapevine moth (Lobesia botrana)
           in the Palearctic region
    • Authors: Andrew Paul Gutierrez; Luigi Ponti, Gianni Gilioli, Johann Baumgärtner
      Abstract: The grapevine moth Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) is the principal native pest of grape in the Palearctic region. In the present study, we assessed prospectively the relative abundance of the moth in Europe and the Mediterranean Basin using linked physiologically-based demographic models for grape and L. botrana. The model includes the effects of temperature, day-length and fruit stage on moth development rates, survival and fecundity.Daily weather data for 1980–2010 were used to simulate the dynamics of grapevine and L. botrana in 4506 lattice cells across the region. Average grape yield and pupae per vine were used as metrics of favourability. The results were mapped using the grass Geographic Information System (http://grass.osgeo.org).The model predicts a wide distribution for L. botrana with highest populations in warmer regions in a wide band along latitude 40°N.The effects of climate warming on grapevine and L. botrana were explored using regional climate model projections based on the A1B scenario of an average +1.8 °C warming during the period 2040–2050 compared with the base period (1960–1970). Under climate change, grape yields increase northwards and with a higher elevation but decrease in hotter areas. Similarly, L. botrana levels increase in northern areas but decrease in the hot areas where summer temperatures approach its upper thermal limit.
      PubDate: 2017-08-26T01:46:17.555553-05:
      DOI: 10.1111/afe.12256
       
  • Intercropping flowering plants in maize systems increases pollinator
           diversity
    • Authors: Stuart L. Norris; Rod P. Blackshaw, C. Nigel R. Critchley, Robert M. Dunn, Kate E. Smith, John Williams, Nicola P. Randall, Philip J. Murray
      Abstract: Maize is a poorly competitive crop. Accordingly, soil preparation and high application rates of herbicides are required to reduce early competition with weeds. This leaves a large amount of bare ground with few flowering weeds, providing a poor farmland habitat for pollinators.The present study evaluates the effect of four different maize management regimes on pollinator diversity and community composition.Flowering plants intercropped with maize attracted pollinators, helping to support pollinator communities. Similar intercropping techniques using a grass ground cover did not increase pollinator density, demonstrating that pollinator richness, density and diversity is intrinsically linked to the presence of flowering plants.A maize system with a diverse intercrop may make it possible for pollinators to thrive; however, these systems may only be sufficiently attractive to bring pollinators in temporarily from the surrounding areas.These results show that there can be significant improvements to pollinator diversity, density and community composition as a result of modifying maize cultivation practices; however, these benefits must be balanced with yield penalties of approximately 60% to farmers.
      PubDate: 2017-08-18T04:40:22.215399-05:
      DOI: 10.1111/afe.12251
       
  • Annual variation of oilseed rape habitat quality and role of grassy field
           margins for seed eating carabids in arable mosaics
    • Authors: Sarah Labruyere; Sandrine Petit, Benoit Ricci
      Abstract: Promoting the weed seed predation service by carabids requires an understanding of the spatio-temporal distribution of carabid species during the cropping season.In the present study, we analyzed the spatio-temporal dynamics of three abundant seed-eating carabid species in oilseed rape (OSR) and its adjacent habitat (cereal crop or grassy field margin) with four indicators: activity density, nutritional state, the use of the interface with the adjacent habitat, and the proportion of carabids leaving OSR.The activity density and nutritional state of Poecilus cupreus decreased after harvest, comprising a period related to a decrease of resource availability and the end of life cycle. We detected a tendency of movement from OSR to the adjacent habitat after harvest for Amara similata, although this was not as strong as expected. The presence of grassy field margins influenced the spatio-temporal dynamics of Pseudoophonus rufipes and A. similata, suggesting that spillover processes exist for these two species but not for P. cupreus.Monitoring four complementary indicators gave a more thorough understanding of the perception of local and adjacent habitats by carabids, which is a prerequisite for the identification of landscape configurations that enhance the activity density of these natural enemies within crops.
      PubDate: 2017-08-02T05:36:08.627842-05:
      DOI: 10.1111/afe.12250
       
  • Determination of Agriotes obscurus (Coleoptera: Elateridae) sex pheromone
           attraction range using target male behavioural responses
    • Authors: Roderick P. Blackshaw; Willem G. van Herk, Robert S. Vernon
      Abstract: A study was conducted to determine the attractive range of traps baited with Agriotes obscurus pheromone to male beetles in both still air and wind conditions. This information is crucial for evaluating the potential of mass trapping when aiming to reduce beetle populations.Groups of 10 beetles were released at 14 points spaced 1 m apart along a linear track, at one end of which was a pheromone and wind source. Beetle response to the pheromone and/or wind was recorded 150 s after release and characterized as orienting either towards or away from the pheromone and/or wind source.Data analysis indicated the attraction range of the sex pheromone is
      PubDate: 2017-07-24T05:20:51.814091-05:
      DOI: 10.1111/afe.12249
       
  • Insect community response to switchgrass intercropping and stand age of
           loblolly pine (Pinus taeda) plantations
    • Authors: Myung-Bok Lee; Joshua W. Campbell, Darren A. Miller, James A. Martin
      Abstract: Intercropping switchgrass (Panicum virgatum) between rows in managed pine stands is a potential, emerging method for biofuel feedstock production in forestry systems. Switchgrass intercropping likely alters vegetation characteristics within a stand by increasing herbaceous vegetation cover and thus influences insect communities positively. However, its effect may vary with stand age, which often determines canopy closure and vegetation structure within a stand: effects of switchgrass intercropping may be stronger in old pine stands with a closed canopy than in young pine stands with an open canopy.We examined how switchgrass intercropping and stand age, namely 3–4-year-old pine (YPine) and 8–9-year-old pine (OPine), influenced insect abundance and diversity in loblolly pine (Pinus taeda) stands in Mississippi, U.S.A., during May to August 2013–2014. We captured insects at 36 locations throughout 12 stands (three stands per each of four treatments; intercropping and non-intercropping treatment in YPine and OPine stands), using pan traps.Abundance and family level richness were greater in YPine stands and Shannon–Wiener diversity and evenness at family level was higher in OPine stands both years. However, insect abundance and diversity did not differ between intercropping and non-intercropping treatments. Community composition was also influenced by stand age, which explained> 90% of constrained inertia, rather than switchgrass intercropping.Our findings suggest that switchgrass intercropping is unlikely to significantly affect insect communities in managed pine stands, whereas stand age, as well as associated successional changes, can be a main factor affecting insects, as often observed in other animal taxa in managed pine landscapes.
      PubDate: 2017-07-24T05:20:42.713316-05:
      DOI: 10.1111/afe.12247
       
  • Parasitoid assemblage associated with a North American pine weevil in
           South Africa
    • Authors: Mesfin Wondafrash; Bernard Slippers, Jeff Garnas, Brett P. Hurley
      Abstract: The weevil Pissodes sp. was first reported as an introduced pest on exotic Pinus spp. in South Africa in 1942. It is only recently that the native wasp Pycnetron pix Prinsloo was described from South Africa as a parasitoid of this weevil.We estimated the frequency and distribution of the association between P. pix and Pissodes sp., as well as the occurrence of possible other natural enemies. Parasitoids were reared from Pissodes-infested Pinus radiata D. Don and Pinus patula Schiede ex Schltdl. & Cham logs collected from major Pinus-growing regions.The identity of parasitoids was confirmed using morphological and molecular techniques. Parasitism was confirmed by analyzing gut content sequences of parasitoids.Pycnetron pix was found parasitizing Pissodes sp. throughout major Pinus-growing provinces of the country. Another native parasitoid, Cratocnema sp., is reported for the first time as a parasitoid of Pissodes sp. Rhopalicus tutela (Walker), a known parasitoid of Pissodes spp. in their native range, was also detected and confirmed to be of European origin.Although characterized by an erratic distribution and a low parasitism rate, an accruing suite of natural enemies was documented, suggesting that there is potential for augmentative biological control of Pissodes sp. in South Africa.
      PubDate: 2017-07-24T05:16:13.936255-05:
      DOI: 10.1111/afe.12246
       
  • Ecosystem services in agriculture: understanding the multifunctional role
           of invertebrates
    • Authors: Manu E. Saunders
      PubDate: 2017-07-24T05:15:30.543148-05:
      DOI: 10.1111/afe.12248
       
  • Time course study of Bactrocera oleae (Diptera: Tephritidae) pupae
           predation in soil: the effect of landscape structure and soil condition
    • Authors: Marta Ortega; Ismael Sánchez-Ramos, Manuel González-Núñez, Susana Pascual
      Abstract: Environmentally friendly control measures are necessary for the olive fruit fly Bactrocera oleae (Rossi). Predation of pupae in soil should be better understood because it contributes to the natural control of pest populations.A time course field trial was carried out in 2015 and 2016 in 15 olive orchards selected to represent a gradient of landscape complexity. Exclusion cages were used to estimate predation rate. A combination of tillage intensity and soil coverage by herbaceous vegetation, hereafter referred to as soil condition, was also assessed as a factor affecting predation rate. The viability of the pupae recovered from the field was also evaluated.Predation was higher in the autumn than in late winter–early spring, although predation rate values were generally quite low.Landscape structure affected predation. In the autumn, the area of Mediterranean scrublands promoted predation in the olive groves. In late winter–early spring, weak tendencies were registered.Soil condition affected predation in autumn as well. The intense tillage and poor soil coverage were related to lower values of predation rate.To favour conservation biological control of B. oleae by pupae predation, it is advisable to reduce the intensity of soil management, especially in autumn, and to preserve areas of scrublands surrounding the olive groves.
      PubDate: 2017-07-07T09:21:19.775735-05:
      DOI: 10.1111/afe.12245
       
  • Population dynamics and seasonal variation in the embryonic dormancy of
           Pilophorus gallicus (Hemiptera: Miridae): ‘don't put all your eggs in
           one basket'
    • Authors: Maria José Ramírez-Soria; Elena López-Gallego, Michelangelo La-Spina, Juan A. Sanchez
      Abstract: Pilophorus gallicus Remane is a generalist predator in southern European pear orchards. Nymphs and adults are present in orchards from March to November; their winter absence suggests either migration to other hosts or embryonic dormancy on pear trees to overcome the adverse period. In addition, it has been hypothesized that aestivation takes place to cope with extreme summer conditions.The present study aimed to investigate the reproductive strategy of P. gallicus to overcome unfavourable periods. Accordingly, (i) its population dynamics were followed during several years and (ii) females were sampled in three different seasons to study the condition (diapausing or nondiapausing) of the laying.The results obtained show that nymphs were always the first mobile instar to show up in pear orchards and the presence of adults was delayed, indicating egg overwintering. Nondiapausing eggs prevailed in spring and summer, whereas the autumn eggs were mainly diapausing. Aestivation was rejected.Worthy of note are: (i) the presence of diapausing eggs under favourable conditions and (ii) the existence of females laying both diapausing and nondiapausing eggs; thus, ‘not laying all the eggs in one basket’. The reproductive strategy of P. gallicus is considered as bet-hedging for the short- and long-term survival of the species.
      PubDate: 2017-07-07T08:55:52.10799-05:0
      DOI: 10.1111/afe.12243
       
  • Genetics-based methods for agricultural insect pest management
    • Authors: Nina Alphey; Michael B. Bonsall
      Abstract: The sterile insect technique is an area-wide pest control method that reduces agricultural pest populations by releasing mass-reared sterile insects, which then compete for mates with wild insects. Contemporary genetics-based technologies use insects that are homozygous for a repressible dominant lethal genetic construct rather than being sterilized by irradiation.Engineered strains of agricultural pest species, including moths such as the diamondback moth Plutella xylostella and fruit flies such as the Mediterranean fruit fly Ceratitis capitata, have been developed with lethality that only operates on females.Transgenic crops expressing insecticidal toxins are widely used; the economic benefits of these crops would be lost if toxin resistance spread through the pest population. The primary resistance management method is a high-dose/refuge strategy, requiring toxin-free crops as refuges near the insecticidal crops, as well as toxin doses sufficiently high to kill wild-type insects and insects heterozygous for a resistance allele.Mass-release of toxin-sensitive engineered males (carrying female-lethal genes), as well as suppressing populations, could substantially delay or reverse the spread of resistance. These transgenic insect technologies could form an effective resistance management strategy.We outline some policy considerations for taking genetic insect control systems through to field implementation.
      PubDate: 2017-06-21T06:05:49.563471-05:
      DOI: 10.1111/afe.12241
       
  • Response of maize stemborers and associated parasitoids to the spread of
           grasses in the rainforest zone of Kisangani, DR Congo: effect on
           stemborers biological control
    • Authors: Onésime M. Kankonda; Benjamin D. Akaibe, Ntambo M. Sylvain, Bruno-Pierre Le Ru
      Abstract: The challenge with respect to nourishing the human population should be met in the context of global environmental change. Land-use change has the potential to affect insect pest–natural enemy interactions.In the Democratic Republic of Congo, the rainforest zone is subjected to intense anthropogenic disturbances that lead to the spread of habitats with a higher proportion of grasses in the landscape. Such a land-use change raises the question of its effects on the biological control of insect pests.The proximity of varying vegetation types around agroecosystems is expected to influence species fitting differently and hence the population dynamics of insect pests and their biological control.Thus, the response of maize stemborers and their parasitoids to the spread of habitats with a higher proportion of grasses was assessed along an anthropogenic disturbance gradient in the rainforest zone of Kisangani, Democratic Republic of Congo.The present study identified a decreased density of stemborers and infestation rates on maize as a result of an increased larval/pupal parasitism in wild habitats as the amount of grasses increased in the landscape. This effect was attributed to an increased parasitoid diversity subsequent to the settlement of an abundant and diverse stemborer community in wild habitats.
      PubDate: 2017-06-21T06:00:57.058357-05:
      DOI: 10.1111/afe.12238
       
  • Drought stress increased survival and development of emerald ash borer
           larvae on coevolved Manchurian ash and implicates phloem-based traits in
           resistance
    • Authors: David N. Showalter; Caterina Villari, Daniel A. Herms, Pierluigi Bonello
      Abstract: Emerald ash borer (Agrilus planipennis Fairmaire, EAB) is causing widespread ash (Fraxinus spp.) mortality as it invades North America and Eastern Europe. Resistance of its coevolved hosts, including Manchurian ash (Fraxinus mandshurica Rupr.), is considered to limit EAB outbreaks and ash mortality in its native Asia, although an understanding of resistance mechanisms is still developing. Such knowledge may facilitate breeding for resistance and management of EAB in its invaded ranges.In the present study, controlled egg inoculations were used to investigate resistance mechanisms impacting larval performance, as well as to characterize the effects of water and nutrient availability on inter- and intra-specific variation in resistance phenotypes based on larval outcomes.Larval survival and growth rates were lower on coevolved Manchurian ash than on evolutionarily naïve white ash (Fraxinus americana L.).Water stress decreased tree growth and resistance of Manchurian ash to EAB, although it had little effect on resistance of the already highly susceptible white ash. High nutrient availability increased tree growth but had no effect on larval performance.These results show that the higher resistance of Manchurian ash to EAB is conferred by phloem traits that decrease larval performance, in addition to lower oviposition preference.
      PubDate: 2017-06-19T04:07:32.542926-05:
      DOI: 10.1111/afe.12240
       
  • Can spruce beetle (Dendroctonus rufipennis Kirky) pheromone trap catches
           or stand conditions predict Engelmann spruce (Picea engelmannii Parry ex
           Engelm.) tree mortality in Colorado'
    • Authors: José F. Negrón; John B. Popp
      Abstract: Bark beetles (Coleoptera: Curculionidae: Scolytinae) can cause extensive tree mortality in forests dominated by their hosts. Among these, the spruce beetle (Dendroctonus rufipennis) is one of the most important beetles in western North America causing Engelmann spruce (Picea engelmannii) tree mortality.Although pheromone traps with attractants are commonly used to monitor spruce beetle populations, the relationship between the numbers of beetles caught in pheromone traps and subsequent tree mortality has not been investigated adequately.We used pheromone traps to catch spruce beetles in plots throughout the insect flight period, quantified subsequent tree mortality, and modelled spruce tree mortality as a function of spruce beetle trap catches and stand conditions.The number of beetles caught was not different between years. It was also positively associated with tree mortality, as was the amount of available host. The year of sampling was significant in all models as a result of different mortality levels between years.We conclude that, although the models had good fit, the difference in mortality between the years with a similar beetle catch negates reliable estimates of tree mortality across years. Managers and forest health specialists will be better served by continued monitoring of spruce beetle populations with pheromone traps and the use of stand variables to identify susceptible stands.
      PubDate: 2017-06-16T02:01:50.419638-05:
      DOI: 10.1111/afe.12239
       
  • Wind-modulated landscape effects on colonization of Brussels sprouts by
           insect pests and their syrphid antagonists
    • Authors: Martin Ludwig; Hella Schlinkert, Rainer Meyhöfer
      Abstract: Most crop fields are annually cleared, including arthropod populations. Recolonization depends on the source habitat presence in the landscape and often is affected by weather conditions.The present study identified source habitats and the effects of temperature and prevailing wind direction on colonization of Brussels sprouts by pests and their natural enemies. We sampled arthropods on standardized monitoring plants in 18 landscapes with different areas of potential source habitats.Most abundant pests and antagonists were Aleyrodes proletella, Brevicoryne brassicae, Plutella xylostella and syrphid larvae. Variation in A. proletella colonization was best explained by the upwind area of oilseed rape (positive effect) and temperature (negative effect). Variation in B. brassicae colonization was best explained by the downwind area of oilseed rape (positive effect), whereas no effects on P. xylostella were found. Syrphid colonization was affected by prey abundance only (positive effect).The results of the present study suggest that A. proletella was transported downwind, whereas B. brassicae located host plants during an upwind flight for approximately 1 km. This is remarkable for aphids with often limited upwind flight ability. Consideration of prevailing wind directions improves forecasting of the colonization intensity by pests from important source habitats.
      PubDate: 2017-06-15T04:50:22.073096-05:
      DOI: 10.1111/afe.12237
       
  • Genetic structure and demographic history of the melon fly Zeugodacus
           cucurbitae (Coquillet) (Diptera: Tephritidae) in Thailand
    • Authors: Chonticha Kunprom; Pairot Pramual
      Abstract: The melon fly Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) is among the most economically important pests of fruits and fleshy vegetables.The genetic diversity, genetic structure and demographic history of Z. cucurbitae in Thailand were investigated based on mitochondrial cytochrome c oxidase I (COI) sequences.Low genetic variation was found in populations of Z. cucurbitae in Thailand, which is consistent with other studies of this species. Demographic history analysis detected a signal of population expansion dating back to 140 000 years ago, which possibly followed increases in host plants after climatic recovery of the penultimate Pleistocene glaciation.Population genetic structure analysis found that 51% of pairwise comparisons are genetically significantly different. Because populations that contributed markedly to genetic structuring possessed very low haplotype diversity, the effect of genetic drift could be a factor driving population differentiation.Comparisons of genetic differentiation between flies from different host plant species found no evidence of isolation. However, most haplotypes are unique for each host plant species, indicating that there are some degrees of isolation.
      PubDate: 2017-06-15T02:00:50.291346-05:
      DOI: 10.1111/afe.12242
       
  • Ecobiology of Anaphothrips obscurus, a new dweller of citrus orchards
           brought in by more sustainable pest management practices
    • Authors: María A. Gómez-Martínez; Ernestina Aguilar-Fenollosa, Josep A. Jaques, Tatiana Pina
      Abstract: The abundance and frequency of Anaphothrips obscurus (Thysanoptera: Thripidae) increased in a cover of Festuca arundinacea (Poaceae) when this plant was used to improve the biological control of the clementine key pest Tetranychus urticae (Acari: Tetranychidae).To unveil the ecological role of A. obscurus in this system, we re-explored field data and performed laboratory studies aiming to determine its demographic parameters and feeding habits, as well as its role as a prey of predatory mites (Acari: Phytoseiidae) occurring in the Spanish citrus agreoecosystem.Field studies indicate that T. urticae populations decreased, whereas those of A. obscurus and phytoseiids, as a whole, increased.Reproductive and demographic parameters of macropterous and brachypterous morphs of A. obscurus were different and confirmed the host status of F. arundinacea.Anaphothrips obscurus could compete with T. urticae as a result of its higher intrinsic rate of increase in F. arundinacea. However, A. obscurus zoophagy on T. urticae eggs and the host status of citrus can be discarded.Anaphothrips obscurus can be a prey for Euseius stipulatus, Neoseiulus barkeri and Neoseiulus californicus (three phytoseiids preying on T. urticae), suggesting that apparent competition between A. obscurus and T. urticae could occur in citrus orchards.
      PubDate: 2017-05-29T03:57:32.318264-05:
      DOI: 10.1111/afe.12233
       
  • Separating effects of species identity and species richness on predation,
           pathogen dissemination and resistance to invasive species in tropical ant
           communities
    • Authors: Akhmad Rizali; Teja Tscharntke, Damayanti Buchori, Yann Clough
      Abstract: Ants are abundant in natural and managed tropical ecosystems and can have an impact on herbivorous arthropods, as well as plant pathogens. Although it has been shown for plants that the diversity of communities can result in improved ecosystem functioning, it remains uncertain how the species richness of ants affects multiple ecosystem services and disservices.In the present study, we used experimentally enhanced natural gradients in ant species richness on 100 cacao trees in a plantation aiming to analyze the effect of ant species identity and species richness on predation pressure and the incidence of cacao pod borer (CPB), as well as the spread of black pod disease (BPD).Ant species richness did not significantly improve predation of experimentally exposed insects, and was not associated with a reduction in the incidence of CPB. However, the incidence of BPD was higher in ant species rich trees, presumably because more ant species were pathogen vectors. The identity of the dominant ant species affected the incidence of CPB and BPD, as well as predation pressure.Although both ant species richness and identity affected ecosystem services and disservices delivered by the ant community, the results of the present study suggest that the identity of dominant ants is the main driver for ecosystem services in these systems.
      PubDate: 2017-05-22T04:41:29.811977-05:
      DOI: 10.1111/afe.12236
       
  • Assessment of the effects of transgenic Bt cotton Bollgard II on the
           abundance of nontarget arthropods in Burkina Faso
    • Authors: Omer S. A. Héma; Issoufou Ouédraogo, Oumar Traoré, Blaise K. Zagré, Delphine Ouattara
      Abstract: The effect of transgenic cotton Bollgard II on the abundance of nontarget arthropods was assessed under field conditions in three areas in Burkina Faso for four successive years (2010–2013).The experiment was carried out on two 0.5-ha plots of which one was seeded with the Bollgard II and one with the non-Bacillus thuringiensis Berliner (Bt) isogenic cultivar.Over four collection methods [plastic bagging (28 collections), water trap (28 collections), beat cloth (six collections) and pitfall traps (six collections)] and 4 years, no statistically significant differences were detected between Bollgard II and the conventional control for 45 out of 48 comparisons.Differences detected were rather random and not consistently detected across collection methods, sites and/or years. Thus, these differences were not indicative of a consistent response associated with the trait and are not considered biologically meaningful in terms of an adverse environmental impact (nontarget arthropod abundance) of Bollgard II compared to conventional cotton receiving six insecticide sprays.
      PubDate: 2017-05-13T04:07:48.118225-05:
      DOI: 10.1111/afe.12232
       
  • Response of Drosophila suzukii (Diptera: Drosophilidae) to extreme heat
           and dryness
    • Authors: Astrid Eben; Maria Reifenrath, Felix Briem, Sebastian Pink, Heidrun Vogt
      Abstract: Drosophila suzukii Matsumura (Diptera) is a polyphagous herbivore native to East Asia that develops in cultivated and wild fruits. In 2011, it appeared in Germany. In 2012, economic damage was recorded and, in 2014, the harvest of stone and soft fruits was lost in some regions. By contrast, during 2015, populations remained lower. Record temperatures and dryness might have impeded population growth during that year.To test this hypothesis, flies were exposed to a 4-day simulation. We evaluated the effect of fluctuating temperature and humidity on mortality and reproduction of D. suzukii from three age classes (average age: class 1: 3 days; class 2: 11 days; class 3: 20 days). Maximum temperatures were 27, 33 and 39 °C. Relative humidity oscillated between 18% and 85%.Fly mortality through heat stress ranged from 50% to 80%. Higher rates died of oldest flies and females. Offspring per female did not differ between heat stressed and control groups.Flies of both sexes were not sterilized through heat and dryness. Prior acclimation reduced any negative effects.We concluded that heat waves and extreme dryness during 2015 were one cause of the low population densities of D. suzukii observed under field conditions.
      PubDate: 2017-05-13T04:07:43.731807-05:
      DOI: 10.1111/afe.12235
       
  • Landscape context influences leafhopper and predatory Orius spp.
           abundances in maize fields
    • Authors: Agnès Ardanuy; Marina S. Lee, Ramon Albajes
      Abstract: Biological control relies on the periodical colonization of crops by natural enemies from surrounding habitats. In North-East Spain, predatory Orius spp. disperse among cereal, maize and alfalfa according to crop phenology and management.In the present study, we examined (i) the variation of Orius spp. and its leafhopper prey Zyginidia scutellaris populations in co-occurring habitats (maize, alfalfa and semi-natural) for 2 years in three regions and (ii) the effects of agricultural landscape context on their abundance in maize.Variance partitioning revealed that inter-annual variation accounted for the largest proportion of variation for Orius spp. and its prey. Maize leafhopper abundance was positively related to winter cereal cover in the landscape and negatively related to semi-natural habitat across the three regions. Orius spp. were unresponsive to shifts in habitat composition despite being present in maize and associated habitats; however, they were positively related to edge density. Larger-scale variation in Orius spp. abundance was best explained by changes in Z. scutellaris abundance in maize.Leafhopper colonization is responsible for the recruitment of Orius spp. in maize. Orius spp. conservation in intensive agricultural landscapes might require permanent field margins and complementary crops (e.g. alfalfa) that ensure resource continuity in time.
      PubDate: 2017-05-10T07:25:26.733839-05:
      DOI: 10.1111/afe.12231
       
  • Large scale Agriotes spp. click beetle (Coleoptera: Elateridae) invasion
           of crop land from field margin reservoirs
    • Authors: Rod P. Blackshaw; Robert S. Vernon, Florent Thiebaud
      Abstract: Mark–release–recapture was used to investigate the dispersal of click beetles in spring wheat or fallow fields using edge or centre field releases. Three types of pitfalls were used: gutter traps near field margins, as well as conventional pitfall traps or cross-traps consisting of four gutter trap arms leading to a central pitfall. Capture of naturally occuring beetles was concurrently recorded.In total, 6952 marked Agriotes obscurus (males and females) and Agriotes lineatus (males) were released and 14.74% were recaptured at some time during the present study. Recovery rates ranged from 3.54% to 28.5%.Agriotes obscurus dominated wild populations, with 4011 males and 1672 females trapped compared with 17 males and three females for A. lineatus. Males dominated early in the period, although the sex ratio tended towards equality as the season progressed.Generally, captures of A. obscurus males released in equal numbers at field edges followed a uniform distribution. There were differences for wild beetles caught in the same traps.Spatial trapping patterns of wild and marked beetles across the fields were similar. Within 19 h of release at the field edges A. obscurus males were captured>30 m away.The crop type had a significant interspecific effect on trap counts for males and an intraspecific effect on A. obscurus females, reinforcing the need for caution when using trapping systems to monitor adult stages of these pests.The results of the present study demonstrate that uncropped field margins comprise sources of click beetles. We also conclude that click beetles disperse much further than reported previously.
      PubDate: 2017-05-04T04:36:44.684376-05:
      DOI: 10.1111/afe.12228
       
  • Comparative development and reproduction of Planococcus ficus and
           Planococcus citri (Hemiptera: Pseudococcidae) on grapevine under field
           conditions
    • Authors: Arturo Cocco; Alessandra Mura, Enrico Muscas, Andrea Lentini
      Abstract: Mealybugs are major pests in grape-growing areas worldwide, causing direct and indirect crop damage. The vine mealybug Planococcus ficus (Signoret) is a key pest in most of grape-producing countries, whereas the citrus mealybug Planococcus citri (Risso) is reported as being destructive in Brazilian and Spanish vineyards.We examined the adaptation of the citrus mealybug to grapevine by investigating its development, reproduction and life-history parameters under Mediterranean field conditions in comparison with those of P. ficus.Both mealybug species developed and reproduced successfully on grapevine. However, P. ficus showed a shorter development time, larger female body size, and higher fecundity, fertility and survival than P. citri.The life-history parameters further highlighted the different growth potential of vine and citrus mealybug populations because P. ficus exhibited a net reproductive rate and an intrinsic rate of increase two- to four-fold higher than that of P. citri. Furthermore, the vine mealybug population doubled its number in approximately half time with respect to the citrus mealybug.Overall, the results of the present study show a better development and reproductive performance and a higher population growth potential of P. ficus compared with P. citri, indicating a higher capacity of the vine mealybug to develop on grapevine in Mediterranean vineyards.
      PubDate: 2017-05-02T10:37:10.106856-05:
      DOI: 10.1111/afe.12234
       
  • Development of Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae) on
           Eucalyptus camaldulensis Dehnh. and Eucalyptus dunnii Maiden
    • Authors: Eliana M. Cuello; Silvia N. López, Andrea V. Andorno, Carmen M. Hernández, Eduardo N. Botto
      Abstract: The red gum lerp psyllid Glycaspis brimblecombei is an invasive insect species, native from Australia, that specifically feeds on Eucalyptus trees. It has invaded several countries throughout the world. In Argentina, it was first recorded in 2005, although little is known about its ecology in the region.We assessed G. brimblecombei population development on Eucalypus camaldulensis and Eucalyptus dunnii using samples of branches for the immature stages and yellow sticky traps for the adults. We also identified the meteorological variables associated with changes in the red gum lerp psyllid abundance.The abundance of eggs, nymphs and adults stages of G. brimblecombei was significantly greater on E. camaldulensis than on E. dunnii in the 2 years of the survey.Glycaspis brimblecombei development was complete on E. camaldulensis where all instars were present, even in the unfavourable seasons. The full development of the psyllid population was not observed in E. dunnii where a high mortality of the first and second nymphal instars was detected.Temperature and relative humidity were the variables that mostly affected red gum lerp psyllid abundance, whereas no effect of rainfall was detected.
      PubDate: 2017-05-02T09:59:21.774937-05:
      DOI: 10.1111/afe.12230
       
  • Behavioural response of the invasive Halyomorpha halys (Hemiptera:
           Pentatomidae) to host plant stimuli augmented with semiochemicals in the
           field
    • Authors: William R. Morrison; McKenzie Allen, Tracy C. Leskey
      Abstract: Although much work has focused on understanding how the invasive brown marmorated stink bug, or Halyomorpha halys, responds to pheromonal stimuli, very little research has explored the response of H. halys to plant volatiles and other host stimuli. The present study aimed to determine (i) whether more acceptable, less acceptable or unacceptable host plants augmented with plant volatile mixes and/or pheromone can enhance the retention capacity of plants for H. halys in the field and (ii) whether plant volatiles [apple, peach or green leaf volatile (GLV) mixtures] can increase attraction to pheromone-baited pyramid traps.The presence of the H. halys pheromone was the primary factor in increasing the retention capacity of tagged, released adults to host plants, although plant volatile mixtures added a small increase in retention. Plant species helped to modulate the effectiveness of both the pheromone and additional plant volatiles in retaining individuals. Plant volatiles did not increase attraction of adults to baited pyramid traps and may have inhibited the attraction of nymphs.Overall, the results of the present study suggest that host plant stimuli, construed broadly, are important for the foraging decisions of H. halys, although further research is needed to identify the most effective stimuli.
      PubDate: 2017-04-19T02:10:44.254929-05:
      DOI: 10.1111/afe.12229
       
  • Sex-dependent thermal history influences cold tolerance, longevity and
           fecundity in false codling moth Thaumatotibia leucotreta (Lepidoptera:
           Tortricidae)
    • Authors: Nevill Boersma; Leigh Boardman, Martin Gilbert, John S. Terblanche
      Abstract: Environmental temperature plays a critical role in the field performance of mass-reared insects. For sterile insect technique programmes, the influence of larval (developmental) temperature variation on subsequent adult field performance is generally poorly understood but may be a significant avenue for increasing efficacy.In the present study, we investigated the influence of larval thermal acclimation on several traits of adult performance in the false codling moth Thaumatotibia leucotreta (Meyrick).After larvae were reared at 15, 20 or 25 °C for their full larval developmental period, we determined the effect of different acute (2 h) temperature treatments (10, 15 or 20 °C) during the adult stage on traits of (i) cold tolerance; (ii) fecundity; and (iii) longevity.Cold tolerance of adults was not influenced by larval acclimation temperature but was affected by sex and adult treatment temperature. Adult fecundity and longevity were affected by larval acclimation temperature, adult treatment temperature and the interaction of these factors with sex.These results suggest a complex, sex-dependent interplay of short- and longer- term temperature history across developmental stages for these traits. Exploring the field impacts of this trait variation is essential, coupled with information on how these traits might respond to artificial manipulation.
      PubDate: 2017-04-04T02:35:41.921723-05:
      DOI: 10.1111/afe.12227
       
  • Effects of landscape cover and local habitat characteristics on visiting
           bees in tropical orchards
    • Authors: Pornpimon Tangtorwongsakul; Natapot Warrit, George A. Gale
      Abstract: Global population declines of insect pollinators highlight the need for a greater ecological understanding of the responses of wild pollinators to local management actions and to human alterations of landscapes, especially in the tropics where crops are highly dependent on wild pollinators.We examined the effects of local and landscape factors on the richness and abundance of bees in farms around Bangkok, Thailand. Bee communities in 24 mango (Mangifera indica L.) orchards in heavily modified landscapes (61–99% anthropogenic land cover) were compared. We predicted that bees would be more species rich in orchards with higher flower diversity, whereas small-sized bees with non-eusocial and/or below-ground nesting habits would be more sensitive to human disturbance, and hence rare.Twenty-eight species were caught and individuals of genus Apis comprised >92% of 3842 bees sampled and dominated all 24 sites.Habitat effects on bee richness and abundance were stronger at the farm scale than at the landscape scale. At the farm scale, total bee richness and abundance, as well as small, non-eusocial and below-ground nesting bee richness and abundance, were negatively associated with field size and positively associated with flowering plant diversity. The percentage of urban land cover within a 1-km radius was weakly but positively related to total bee richness and small-sized bee richness; total bee abundance was positively associated with wetland cover.A greater diversity of flowering plants retained in smaller fields maintained higher bee richness and abundances, particularly small-sized bees. Farmers can enhance bee populations by maintaining small patches of flowers in their fields.
      PubDate: 2017-03-27T05:41:35.406152-05:
      DOI: 10.1111/afe.12226
       
  • Micro X-ray computed tomography suggests cooperative feeding among adult
           invasive bugs Leptoglossus occidentalis on mature seeds of stone pine
           Pinus pinea
    • Authors: Ana O. Farinha; Manuela Branco, Manuel F. C. Pereira, Marie-Anne Auger-Rozenberg, António Maurício, Annie Yart, Vera Guerreiro, Edmundo M. R. Sousa, Alain Roques
      Abstract: The consumption of edible pine seeds of stone pine by the invasive Leptoglossus occidentalis represents a major concern for producers in Mediterranean countries but, to date, little knowledge is available about its feeding process on these seeds.In the present study, we tested whether L. occidentalis is capable of feeding upon mature pine seeds and also estimated the impact that they may induce.Sound pine seeds were offered to bugs under laboratory conditions. Seed content was analyzed via a multitechnique approach using a stereomicroscope, X-rays and microcomputed tomography, which was expected to better characterize the damage caused by this bug.Adults of L. occidentalis were capable of feeding on mature seeds by piercing the hard and thick coat. However, the consumption was low and demonstrated a slow start, presumably as a result of the time and effort taken to drill a feeding hole.A collaborative feeding process was suggested because all bugs in the same box appeared to have fed through the same hole in most cases.Consumption was estimated to be approximately one-fifth of a seed kernel per bug per month. Consumed kernels appeared skunked and wrinkled.
      PubDate: 2017-03-27T03:36:03.065193-05:
      DOI: 10.1111/afe.12225
       
  • Increased trapping efficiency for the peach fruit moth Carposina sasakii
           (Matsumura) with synthetic sex pheromone
    • Authors: Zhiwei Zhang; Xianwei Li, Yanhua Xue, Zhiguo Zhao, Jie Li, Ruiyan Ma
      Abstract: Carposina sasakii Matsumura is one of the most serious fruit-damaging pests in Southern East Asia. The management of C. sasakii using sex pheromones has proven to be simple, effective and environmentally friendly with respect to monitoring and controlling this pest.To apply sex pheromone-based pest control techniques effectively, we characterized a range of application parameters, as well as the effects of synthetic sex pheromones, in jujube orchards. Trapping radius was determined by comparing the mean number of trapped individuals at different inter-trap distances, and mating disruption parameters were inferred by comparing the rate of trapping efficiency reduction and the infestation ratio of fruits in the experimental fields by uniformly placing different number/types of lures/100 m2.These studies revealed capture rates with significant differences across 10–50-m inter-trap distances: for example, a 30-m or greater inter-trap distance was suitable for monitoring and mass trapping, whereas distances
      PubDate: 2017-03-03T00:52:52.743835-05:
      DOI: 10.1111/afe.12222
       
  • Demography of a genetic sexing strain of Anastrepha ludens (Diptera:
           Tephritidae): effects of selection based on mating performance
    • Authors: Luis Quintero-Fong; Jorge Toledo, Lorena Ruiz-Montoya, Pedro Rendón, Dina Orozco-Dávila, Javier Valle-Mora, Pablo Liedo
      Abstract: Tapachula-7 is a genetic sexing strain of Anastrepha ludens (Loew) (Diptera: Tephritidae) developed for the application of the sterile insect technique (SIT). To improve the sexual performance of this strain, a mass-reared colony was established from males selected for their sexual competitiveness.Males from selected colonies are more sexually competitive than nonselected males. The present study aimed to analyse the demographic changes recorded in the study colony throughout four consecutive generations, comparing this colony with the parental colony and a wild strain.The results obtained showed that, in the selected strain, fecundity increased, whereas survival diminished, compared with the laboratory parental strain. The increases in fecundity rates were observed at the first generation after selection. No changes were observed in the duration of the reproductive period in the selected strain.Compared with wild flies, selected flies had lower life expectancy, earlier and shorter reproductive period, and greater daily fecundity at young ages (10–30 days), although with lower lifetime fecundity rates.The four generations of the selected colony showed similar patterns of survival and reproduction. The better mating performance and the increase in early fecundity suggest that selection could contribute to improve rearing efficiency and SIT effectiveness.
      PubDate: 2017-03-03T00:52:48.569862-05:
      DOI: 10.1111/afe.12223
       
  • Evidence of potential hybridization in the Thaumetopoea
           pityocampa-wilkinsoni complex
    • Authors: Edoardo Petrucco-Toffolo; Andrea Basso, Carole Kerdelhué, Kahraman İpekdal, Zvi Mendel, Mauro Simonato, Andrea Battisti
      Abstract: The winter pine processionary moth complex includes some major defoliating insects of Pinus and Cedrus forests in southern Europe and the Mediterranean Basin, where they also cause health problems to humans and animals.The complex includes at least two species that were separated recently based on molecular and morphological evidence: Thaumetopoea pityocampa in the west and Thaumetopoea wilkinsoni in the east of the Mediterranean Basin.Individuals from two populations, selected as representative of Th. pityocampa and Th. wilkinsoni, were used to test whether hybridization is possible under controlled conditions.The hybrid offspring showed intermediate morphological and performance traits, whereas heterosis for pupal weight was detected in one of the hybrid lines. The genetic analysis confirmed the crosses.Both species have large phenological plasticity and may come into contact at the edge of their range, where they could hybridize.Based on the evidence accumulated so far, it is recommended that the current species designations are maintained, although a deeper study of the trait variability is required, especially in the contact zones.
      PubDate: 2017-03-03T00:52:43.367334-05:
      DOI: 10.1111/afe.12224
       
  • MALDI-TOF MS identification of microbiota associated with pest insect
           Diabrotica speciosa
    • Authors: Bruno Perlatti; Anderson L. Luiz, Evandro L. Prieto, João B. Fernandes, Maria Fátima das Graças Fernandes Silva, Douglas Ferreira, Eduardo N. Costa, Arlindo L. Boiça Júnior, Moacir R. Forim
      Abstract: Resistance development in pest insects has guided the advance of cleaner and more effective strategies for pest control. An interesting and promising strategy is the manipulation of insects via their gut microbiota.To evaluate the feasibility of this strategy, Diabrotica speciosa, a highly polyphagous pest insect from South America that causes substantial damage to several important crops, was reared under controlled conditions. Aerobic culturable bacteria were isolated from the gut of D. speciosa and identified using proteomic fingerprints obtained by matrix-assisted laser desorption ionization coupled to time-of-flight mass spectrometry (MALDI-TOF MS), as well as by genomic methods via partial sequencing of the 16S rRNA gene.Seventy-three strains belonging to 17 genera and up to 29 different species were isolated. γ-Proteobacteria of the orders Pseudomonadales and Enterobacteriales were the predominant. A core gut microbiome for the genus Diabrotica could be inferred when microbiotas from different species from the genus were compared. Molecular and spectrometric techniques indicated complete agreement of genera classification, although cluster analysis revealed distinct taxonomic grouping patterns.MALDI-TOF MS provided reliable identification of culturable gut bacteria, demonstrating similar efficacy, with cheaper and faster results relative to partial 16S rRNA gene sequencing, and also showed an interesting and unexpected phyloproteomic correlation.
      PubDate: 2017-03-02T05:05:28.659956-05:
      DOI: 10.1111/afe.12220
       
  • Comparative biology, predation capacity and effect of an artificial diet
           on reproductive parameters of green lacewing Mallada boninensis
           (Neuroptera: Chrysopidae)
    • Authors: Azizur Rahman; Gautam Handique, Somnath Roy
      Abstract: Investigations were undertaken to clarify the biology of green lacewing Mallada boninensis on its hosts Helopeltis theivora and Oligonychus coffeae, which are two major arthropod pests of tea crop and on an artificial diet. No significant variations were recorded in terms of preoviposition period, oviposition period, oviposition rate, total eggs, hatching success, larval survival and adult emergence when M. boninensis was reared on both hosts. However, all larval instars and pupal development time, as well as adult longevity, were significantly shorter when M. boninesis was reared on H. theivora.We also provide the first report on the predatory potential of M. boninensis against H. theivora. The feeding efficiency of M. boninensis increased with the advancement of each developmental stage. The third-instar larvae of M. boninensis consumed more H. theivora individuals (28.4 ± 1.50) than the first (7 ± 1.11) and second (24.2 ± 1.81) instars over its entire duration.The artificial diet produced significantly superior results in terms of fecundity, hatching success, larval survival and adult emergence when M. boninensis was reared on it compared with when it was reared on H. theivora and O. coffeae.The findings of the present study indicate that M. boninensis can be effectively utilized in integrated pest management programmes for controlling some major arthropod pests of tea by suitably mass rearing them followed by augmentative release.
      PubDate: 2017-03-01T06:36:15.535745-05:
      DOI: 10.1111/afe.12221
       
  • Molecular identification and distribution of leatherjackets (Diptera:
           Tipulidae) in U.K. agricultural grassland
    • Authors: Carly M. Benefer; Karzan S. D'Ahmed, Philip J. Murray, Rod P. Blackshaw
      Abstract: DNA barcoding is useful for the identification of morphologically cryptic invertebrates. An important application is for pest species, for which it is critical to determine the distribution, biology and ecology of damaging life stages in order to target management effectively.Tipula paludosa (Meigen) and Tipula oleracea (Linnaeus) leatherjackets, the larvae of crane flies (Diptera: Tipulidae), are pests of agricultural grassland in Europe and the U.S.A. and are difficult to distinguish morphologically.We used cytochrome c oxidase subunit I (COI) barcoding to identify leatherjackets from 19 permanent grassland fields over 2 sampling seasons on the Rothamsted Research North Wyke Farm Platform, south west UK, to assess species-level distribution and genetic diversity.Most larvae (94%) were found to be T. paludosa, comprising 18 haplotypes that were spread across the sampling site in a panmictic population. However, T. oleracea were found in low abundance (3% of larval samples) and only in the second year of sampling. Other morphologically similar Dipteran larvae (3%) were also found.This dominance of one species suggests that there may be underlying differences in species biology, such as choice of oviposition site and dispersal ability, which is in agreement with other studies and has implications for monitoring and management.
      PubDate: 2017-02-23T01:00:31.614599-05:
      DOI: 10.1111/afe.12219
       
  • Stump-harvesting for bioenergy probably has transient impacts on
           abundance, richness and community structure of beetle assemblages
    • Authors: Karen D. Shevlin; Roseanne Hennessy, Aoife B. Dillon, Philip O'Dea, Christine T. Griffin, Christopher D. Williams
      Abstract: Harvesting of tree stumps for bioenergy is popular and, although the environmental impact has been considered with respect to ecosystem processes, there have been fewer studies on the impact of stump-harvesting on biodiversity.We carried out pitfall-trap surveys of beetle communities at eight plots across four sites (four plots were clear-fells where stumps remained and four were clear-fells where stumps were harvested). Initially, we recovered 7743 beetles when stumps were extracted but still on site (Year 1). All beetles were identified to family level and ground beetles and wood-associated beetles to species level. One year after stumps were extracted, the survey was repeated. In this collection, 2898 individual beetles were recovered.In Year 1, stump-harvesting had a negative impact on beetle abundance and richness. However, 1 year after stumps were removed, there were no significant differences in these variables at any site.At the community level, stump-harvesting weakly but significantly, affected carabid composition. One year after stumps were removed, stump-harvesting had no effect on community composition.Stump-harvesting initially negatively affects beetle abundance, family-richness and carabid species richness, as well as community structure, although any effects are not large, are site-specific and are probably not persistent.
      PubDate: 2017-02-22T01:50:44.436051-05:
      DOI: 10.1111/afe.12218
       
  • Is there reproductive diapause in the winterform of pear psylla Cacopsyla
           bidens'
    • Authors: Reut Madar; Yalta Zamir, Anna Litovsky, Victoria Soroker
      Abstract: Seasonal changes in reproductive state were investigated in the pear psylla Cacopsylla bidens (Šulc), with a particular emphasis on the evaluation of reproductive diapause during autumn and winter.Changes in reproductive status were observed in both seasons in populations living at four altitudes: 70, 300, 700 and 730 m. Winterform psylla females exhibited a period of slow ovarian development and a low mating rate. The onset, duration and extent of this period varied among the four sites but terminated synchronously, around December 20th. These changes were consistent within the same population over 3 years.Laboratory and field data suggested that winterform female C. bidens maintain some characteristics of reproductive diapause. By manipulating photoperiod and temperature during psylla development, we showed a major role for photoperiod in the induction of a reproductive diapause-like state. However, as observed under natural conditions, the timing of the decrease in ovarian development and mating was highly dependent on the decrease in temperature.The fact that the initiation of reproductive activity was synchronous and highly predictable is very significant for the design of phenologically based management for this pest.
      PubDate: 2017-02-14T04:35:46.737034-05:
      DOI: 10.1111/afe.12214
       
  • Dominance of spotted stemborer Chilo partellus Swinhoe (Lepidoptera:
           Crambidae) over indigenous stemborer species in Africa's changing
           climates: ecological and thermal biology perspectives
    • Authors: Reyard Mutamiswa; Frank Chidawanyika, Casper Nyamukondiwa
      Abstract: Africa hosts several economically significant lepidopteran cereal stemborer species belonging to the Crambidae, Noctuidae and Pyralidae families. The invasive spotted stemborer (Chilo partellus Swinhoe), which is native to Asia, is one of the most damaging cereal stemborers in Africa. The impact of C. partellus on indigenous stemborer species remains unclear, although recent work demonstrates its increasing ecological influence and numerical advantage over Sesamia calamistis and Busseola fusca in African landscapes.In the present study, we discuss C. partellus dominance under Africa's changing climates and highlight the ecological and thermal physiological factors that may contribute to its dominance over indigenous stemborer species. Chilo partellus is an efficient colonizer and competitor and may have an advantage under limited resources typical under climate change. Its invasion potential may also probably stem from its short generation time, overwintering physiology, temperature and relative humidity resilience, wide host preferences, and asynchrony with its biocontrol agents.Using laboratory experiments, we show that C. partellus has a high basal temperature tolerance and related plasticity compared with S. calamistis and B. fusca. These results indicate that ecophysiology may determine invasion success and thus may explain the relative invasion advantage of C. partellus in African landscapes.We recommend that future climate change work be directed towards more comprehensive stemborer total ecology research, stemborer thermal biology and implications on the efficacy of biocontrol. Specifically, knowledge of stemborer-natural enemy evolutionary potential is vital for understanding how climate change and variability may shape host-natural enemy interactions, with implications for pest forecasts, prediction models and pest management.
      PubDate: 2017-02-13T05:00:41.292258-05:
      DOI: 10.1111/afe.12217
       
  • Tracing the origin of a cryptic invader: phylogeography of the Euwallacea
           fornicatus (Coleoptera: Curculionidae: Scolytinae) species complex
    • Authors: Richard Stouthamer; Paul Rugman-Jones, Pham Q. Thu, Akif Eskalen, Tim Thibault, Jiri Hulcr, Liang-Jong Wang, Bjarte H. Jordal, Chi-Yu Chen, Miriam Cooperband, Ching-Shan Lin, Naoto Kamata, Sheng-Shan Lu, Hayato Masuya, Zvi Mendel, Robert Rabaglia, Sunisa Sanguansub, Hsin-Hui Shih, Wisut Sittichaya, Shixiang Zong
      Abstract: The ambrosia beetle morphologically identified as Euwallacea fornicatus consists of several cryptic species that exhibit large differences in the DNA sequences of several nuclear and mitochondrial gene regions.Based on these differences, we suggest that there are at least three different species each with distinct phylogeography.Members of this cryptic species complex have invaded many areas outside their native range and cause substantial damage to both agriculture (avocado in particular) and other tree species.Three of these cryptic species have invaded the USA: two species in California and a third species in both Florida and Hawaii.Identification of their native range allows directed search for their natural enemies that may be used in biological control of these tree pests.
      PubDate: 2017-02-06T11:00:36.383273-05:
      DOI: 10.1111/afe.12215
       
  • Effects of host abundance on larch budmoth outbreaks in the European Alps
    • Authors: Claudia Hartl-Meier; Jan Esper, Andrew Liebhold, Oliver Konter, Andreas Rothe, Ulf Büntgen
      Abstract: Outbreaks of the larch budmoth (LBM) in the European Alps are among the most documented population cycles and their historical occurrence has been reconstructed over 1200 years.Causes and consequences of cyclic LBM outbreaks are poorly understood and little is known about populations near the margin of the host's distribution range.In the present study, we quantify historical LBM outbreaks and associated growth reductions in host trees (European larch). Tree-ring data collected from 18 sites between approximately 500 and 1700 m a.s.l. in the Northern pre-Alps are compared with data from the Western Alps and Tatra Mountains, as well as with nonhost Norway spruce.Highly synchronized host and nonhost growth in the Northern pre-Alps shows that periodic LBM outbreaks are largely absent near the distributional limit of larch. By contrast, growth patterns in the Western Alps LBM core region are indicative of LBM events. Although climatic conditions in the Northern pre-Alps and Tatra Mountains would allow LBM outbreaks, low host plant abundance is likely the key driver for the absence of cyclic outbreaks in these regions.The results obtained in the present study suggest that, in addition to the climatic conditions, host-species abundance is critically important for the occurrence of periodic LBM outbreaks and the determination of the respective outbreak range.
      PubDate: 2017-01-31T08:43:31.171134-05:
      DOI: 10.1111/afe.12216
       
  • Without up-to-date pest thresholds sustainable agriculture is nothing but
           a pipe-dream
    • Authors: Simon R. Leather; Daniela Atanasova
      Pages: 341 - 343
      PubDate: 2017-10-04T03:17:23.522193-05:
      DOI: 10.1111/afe.12244
       
  • List of Referees
    • Pages: 442 - 443
      PubDate: 2017-10-04T03:17:20.131183-05:
      DOI: 10.1111/afe.12263
       
  • Volume Contents
    • Pages: 444 - 448
      PubDate: 2017-10-04T03:17:18.952546-05:
      DOI: 10.1111/afe.12264
       
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
 
Home (Search)
Subjects A-Z
Publishers A-Z
Customise
APIs
Your IP address: 54.156.67.122
 
About JournalTOCs
API
Help
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-2016