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Publisher: Springer-Verlag (Total: 2574 journals)

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Showing 1 - 200 of 2574 Journals sorted alphabetically
3D Printing in Medicine     Open Access   (Followers: 4)
3D Research     Hybrid Journal   (Followers: 21, SJR: 0.222, CiteScore: 1)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 11, SJR: 0.825, CiteScore: 1)
AAPS J.     Hybrid Journal   (Followers: 29, SJR: 1.118, CiteScore: 4)
AAPS PharmSciTech     Hybrid Journal   (Followers: 8, SJR: 0.752, CiteScore: 3)
Abdominal Radiology     Hybrid Journal   (Followers: 18, SJR: 0.866, CiteScore: 2)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4, SJR: 0.439, CiteScore: 0)
Academic Psychiatry     Full-text available via subscription   (Followers: 30, SJR: 0.53, CiteScore: 1)
Academic Questions     Hybrid Journal   (Followers: 9, SJR: 0.106, CiteScore: 0)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 31, SJR: 0.316, CiteScore: 1)
Acoustical Physics     Hybrid Journal   (Followers: 11, SJR: 0.359, CiteScore: 1)
Acoustics Australia     Hybrid Journal   (Followers: 1, SJR: 0.232, CiteScore: 1)
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.367, CiteScore: 0)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.675, CiteScore: 1)
Acta Biotheoretica     Hybrid Journal   (Followers: 4, SJR: 0.284, CiteScore: 1)
Acta Diabetologica     Hybrid Journal   (Followers: 19, SJR: 1.587, CiteScore: 3)
Acta Endoscopica     Hybrid Journal   (Followers: 1)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.769, CiteScore: 1)
Acta Geochimica     Hybrid Journal   (Followers: 7, SJR: 0.24, CiteScore: 1)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 3, SJR: 0.305, CiteScore: 1)
Acta Geophysica     Hybrid Journal   (Followers: 11, SJR: 0.312, CiteScore: 1)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.588, CiteScore: 3)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.517, CiteScore: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12, SJR: 7.066, CiteScore: 3)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.452, CiteScore: 1)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6, SJR: 0.379, CiteScore: 1)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.27, CiteScore: 0)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.208, CiteScore: 0)
Acta Mechanica     Hybrid Journal   (Followers: 25, SJR: 1.04, CiteScore: 2)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.607, CiteScore: 2)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7, SJR: 0.576, CiteScore: 2)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.638, CiteScore: 1)
Acta Neurochirurgica     Hybrid Journal   (Followers: 7, SJR: 0.822, CiteScore: 2)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 2, SJR: 0.376, CiteScore: 1)
Acta Neuropathologica     Hybrid Journal   (Followers: 4, SJR: 7.589, CiteScore: 12)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.334, CiteScore: 1)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 4, SJR: 0.574, CiteScore: 2)
Acta Politica     Hybrid Journal   (Followers: 19, SJR: 0.605, CiteScore: 1)
Activitas Nervosa Superior     Hybrid Journal   (SJR: 0.147, CiteScore: 0)
Adaptive Human Behavior and Physiology     Hybrid Journal  
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 8, SJR: 0.103, CiteScore: 0)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 28, SJR: 0.72, CiteScore: 2)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 9)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 19, SJR: 1.005, CiteScore: 2)
Adolescent Research Review     Hybrid Journal  
Adsorption     Hybrid Journal   (Followers: 5, SJR: 0.703, CiteScore: 2)
Advanced Composites and Hybrid Materials     Hybrid Journal  
Advanced Fiber Materials     Full-text available via subscription  
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4, SJR: 0.698, CiteScore: 1)
Advances in Astronautics Science and Technology     Hybrid Journal  
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 40, SJR: 0.956, CiteScore: 2)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21, SJR: 0.812, CiteScore: 1)
Advances in Contraception     Hybrid Journal   (Followers: 3)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 58, SJR: 1.09, CiteScore: 1)
Advances in Gerontology     Partially Free   (Followers: 8, SJR: 0.144, CiteScore: 0)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 35, SJR: 1.64, CiteScore: 2)
Advances in Manufacturing     Hybrid Journal   (Followers: 3, SJR: 0.475, CiteScore: 2)
Advances in Neurodevelopmental Disorders     Hybrid Journal  
Advances in Polymer Science     Hybrid Journal   (Followers: 49, SJR: 1.04, CiteScore: 3)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 1.075, CiteScore: 3)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 7)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.517, CiteScore: 1)
Aerobiologia     Hybrid Journal   (Followers: 3, SJR: 0.673, CiteScore: 2)
Aerosol Science and Engineering     Hybrid Journal  
Aerospace Systems     Hybrid Journal  
Aerotecnica Missili & Spazio : J. of Aerospace Science, Technologies & Systems     Hybrid Journal  
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 11, SJR: 0.825, CiteScore: 1)
African Archaeological Review     Hybrid Journal   (Followers: 21, SJR: 0.862, CiteScore: 1)
Afrika Matematika     Hybrid Journal   (Followers: 1, SJR: 0.235, CiteScore: 0)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.39, CiteScore: 1)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.67, CiteScore: 2)
Agricultural Research     Hybrid Journal   (Followers: 6, SJR: 0.276, CiteScore: 1)
Agriculture and Human Values     Open Access   (Followers: 15, SJR: 1.173, CiteScore: 3)
Agroforestry Systems     Open Access   (Followers: 20, SJR: 0.663, CiteScore: 1)
Agronomy for Sustainable Development     Open Access   (Followers: 15, SJR: 1.864, CiteScore: 6)
AI & Society     Hybrid Journal   (Followers: 9, SJR: 0.227, CiteScore: 1)
AIDS and Behavior     Hybrid Journal   (Followers: 16, SJR: 1.792, CiteScore: 3)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 4, SJR: 0.862, CiteScore: 3)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 7, SJR: 0.531, CiteScore: 0)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.583, CiteScore: 1)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 1.095, CiteScore: 1)
Algorithmica     Hybrid Journal   (Followers: 9, SJR: 0.56, CiteScore: 1)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.234, CiteScore: 0)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 5, SJR: 1.11, CiteScore: 3)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 2)
AMBIO     Hybrid Journal   (Followers: 10, SJR: 1.569, CiteScore: 4)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 17, SJR: 0.951, CiteScore: 3)
American J. of Community Psychology     Hybrid Journal   (Followers: 29, SJR: 1.329, CiteScore: 2)
American J. of Criminal Justice     Hybrid Journal   (Followers: 9, SJR: 0.772, CiteScore: 1)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 18, SJR: 0.46, CiteScore: 1)
American J. of Dance Therapy     Hybrid Journal   (Followers: 6, SJR: 0.181, CiteScore: 0)
American J. of Potato Research     Hybrid Journal   (Followers: 3, SJR: 0.611, CiteScore: 1)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 22, SJR: 0.314, CiteScore: 0)
American Sociologist     Hybrid Journal   (Followers: 16, SJR: 0.35, CiteScore: 0)
Amino Acids     Hybrid Journal   (Followers: 7, SJR: 1.135, CiteScore: 3)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 10, SJR: 0.211, CiteScore: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6, SJR: 0.536, CiteScore: 1)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 6)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 32, SJR: 0.978, CiteScore: 3)
Anatomical Science Intl.     Hybrid Journal   (Followers: 3, SJR: 0.367, CiteScore: 1)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.177, CiteScore: 5)
Animal Cognition     Hybrid Journal   (Followers: 23, SJR: 1.389, CiteScore: 3)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.192, CiteScore: 0)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.097, CiteScore: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4, SJR: 0.438, CiteScore: 0)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.429, CiteScore: 0)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.197, CiteScore: 1)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 19, SJR: 1.042, CiteScore: 3)
Annals of Combinatorics     Hybrid Journal   (Followers: 4, SJR: 0.932, CiteScore: 1)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Dyslexia     Hybrid Journal   (Followers: 10, SJR: 0.85, CiteScore: 2)
Annals of Finance     Hybrid Journal   (Followers: 35, SJR: 0.579, CiteScore: 1)
Annals of Forest Science     Hybrid Journal   (Followers: 7, SJR: 0.986, CiteScore: 2)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.228, CiteScore: 1)
Annals of Hematology     Hybrid Journal   (Followers: 15, SJR: 1.043, CiteScore: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 12, SJR: 0.413, CiteScore: 1)
Annals of Microbiology     Hybrid Journal   (Followers: 11, SJR: 0.479, CiteScore: 2)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 5, SJR: 0.687, CiteScore: 2)
Annals of Operations Research     Hybrid Journal   (Followers: 11, SJR: 0.943, CiteScore: 2)
Annals of Ophthalmology     Hybrid Journal   (Followers: 13)
Annals of PDE     Hybrid Journal  
Annals of Regional Science     Hybrid Journal   (Followers: 9, SJR: 0.614, CiteScore: 1)
Annals of Software Engineering     Hybrid Journal   (Followers: 13)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 11, SJR: 0.239, CiteScore: 1)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 15, SJR: 1.986, CiteScore: 4)
Annals of Telecommunications     Hybrid Journal   (Followers: 9, SJR: 0.223, CiteScore: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 1.495, CiteScore: 1)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.834, CiteScore: 2)
Apidologie     Hybrid Journal   (Followers: 4, SJR: 1.22, CiteScore: 3)
APOPTOSIS     Hybrid Journal   (Followers: 9, SJR: 1.424, CiteScore: 4)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2, SJR: 0.294, CiteScore: 1)
Applications of Mathematics     Hybrid Journal   (Followers: 3, SJR: 0.602, CiteScore: 1)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 44, SJR: 0.571, CiteScore: 2)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 18, SJR: 0.21, CiteScore: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 4, SJR: 0.49, CiteScore: 0)
Applied Composite Materials     Hybrid Journal   (Followers: 53, SJR: 0.58, CiteScore: 2)
Applied Entomology and Zoology     Partially Free   (Followers: 7, SJR: 0.422, CiteScore: 1)
Applied Geomatics     Hybrid Journal   (Followers: 3, SJR: 0.733, CiteScore: 3)
Applied Geophysics     Hybrid Journal   (Followers: 9, SJR: 0.488, CiteScore: 1)
Applied Intelligence     Hybrid Journal   (Followers: 15, SJR: 0.6, CiteScore: 2)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4, SJR: 0.319, CiteScore: 1)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10, SJR: 0.886, CiteScore: 1)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (Followers: 1, SJR: 0.17, CiteScore: 0)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 67, SJR: 1.182, CiteScore: 4)
Applied Physics A     Hybrid Journal   (Followers: 10, SJR: 0.481, CiteScore: 2)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 26, SJR: 0.74, CiteScore: 2)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8, SJR: 0.519, CiteScore: 2)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 12, SJR: 0.316, CiteScore: 1)
Applied Solar Energy     Hybrid Journal   (Followers: 22, SJR: 0.225, CiteScore: 0)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6, SJR: 0.542, CiteScore: 1)
Aquaculture Intl.     Hybrid Journal   (Followers: 26, SJR: 0.591, CiteScore: 2)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 2)
Aquatic Ecology     Hybrid Journal   (Followers: 37, SJR: 0.656, CiteScore: 2)
Aquatic Geochemistry     Hybrid Journal   (Followers: 3, SJR: 0.591, CiteScore: 1)
Aquatic Sciences     Hybrid Journal   (Followers: 14, SJR: 1.109, CiteScore: 3)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.303, CiteScore: 1)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 2, SJR: 0.319, CiteScore: 1)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 22, SJR: 1.052, CiteScore: 2)
Archaeologies     Hybrid Journal   (Followers: 12, SJR: 0.224, CiteScore: 0)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.725, CiteScore: 1)
Archival Science     Hybrid Journal   (Followers: 68, SJR: 0.745, CiteScore: 2)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 7, SJR: 0.186, CiteScore: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3, SJR: 0.909, CiteScore: 1)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 3.93, CiteScore: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6, SJR: 0.79, CiteScore: 2)
Archives and Museum Informatics     Hybrid Journal   (Followers: 168, SJR: 0.101, CiteScore: 0)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6, SJR: 1.41, CiteScore: 5)
Archives of Dermatological Research     Hybrid Journal   (Followers: 7, SJR: 1.006, CiteScore: 2)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 14, SJR: 0.773, CiteScore: 2)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 18, SJR: 0.956, CiteScore: 2)
Archives of Microbiology     Hybrid Journal   (Followers: 9, SJR: 0.644, CiteScore: 2)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 9, SJR: 1.146, CiteScore: 2)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 0.71, CiteScore: 2)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 11, SJR: 1.493, CiteScore: 3)
Archives of Toxicology     Hybrid Journal   (Followers: 18, SJR: 1.541, CiteScore: 5)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 0.973, CiteScore: 2)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 17, SJR: 1.274, CiteScore: 3)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 0.946, CiteScore: 3)
ArgoSpine News & J.     Hybrid Journal  
Argumentation     Hybrid Journal   (Followers: 6, SJR: 0.349, CiteScore: 1)
Arid Ecosystems     Hybrid Journal   (Followers: 3, SJR: 0.2, CiteScore: 0)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.766, CiteScore: 1)
arktos : The J. of Arctic Geosciences     Hybrid Journal  
Arnold Mathematical J.     Hybrid Journal   (Followers: 1, SJR: 0.355, CiteScore: 0)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2, SJR: 0.839, CiteScore: 2)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.131, CiteScore: 0)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 12, SJR: 0.937, CiteScore: 2)
Artificial Intelligence Review     Hybrid Journal   (Followers: 21, SJR: 0.833, CiteScore: 4)
Artificial Life and Robotics     Hybrid Journal   (Followers: 10, SJR: 0.226, CiteScore: 0)
Asia Europe J.     Hybrid Journal   (Followers: 4, SJR: 0.504, CiteScore: 1)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12, SJR: 0.479, CiteScore: 1)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 17, SJR: 1.185, CiteScore: 2)

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Similar Journals
Journal Cover
Applied Entomology and Zoology
Journal Prestige (SJR): 0.422
Citation Impact (citeScore): 1
Number of Followers: 7  
  Partially Free Journal Partially Free Journal
ISSN (Print) 0003-6862 - ISSN (Online) 1347-605X
Published by Springer-Verlag Homepage  [2574 journals]
  • Tebufenozide resistance in the smaller tea tortrix, Adoxophyes honmai
           (Lepidoptera: Tortricidae): establishment of a molecular diagnostic method
           based on EcR mutation and its application for field-monitoring
    • Abstract: The smaller tea tortrix, Adoxophyes honmai Yasuda (Lepidoptera: Tortricidae), is one of the main insect pests of tea, Camellia sinensis Kuntz, in Japan. Recently, A. honmai has developed a high resistance to diacylhydrazine analog insect growth regulators, such as tebufenozide, in Shizuoka Prefecture. Previously, we identified a point mutation (A415V) in the ecdysone receptor gene (EcR), a candidate factor responsible for tebufenozide resistance. In this study, we have developed a molecular method of diagnosis to detect the EcR A415V mutation by polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP). This method was confirmed to be successfully applicable to larvae reared in the laboratory and adults collected by pheromone traps in the field. The appearance ratio of the resistant allele in the A. honmai populations from various Japanese districts examined by the method revealed a high correlation with the magnitude of tebufenozide resistance. These results verified that the A415V mutation is the principal factor responsible for tebufenozide resistance and the PCR–RFLP method may be used as a reliable and convenient tool for monitoring tebufenozide resistance in the field.
      PubDate: 2019-03-15
  • Assessing the relationship between pest density and plant damage: a case
           study with the belowground herbivore Delia radicum (Diptera: Anthomyiidae)
           on broccoli
    • Abstract: For many crops, we have poor knowledge about the relationship between pest density and damage. However, investigating pest harmfulness is particularly relevant currently in the search for alternative crop protection strategies that are unlikely to totally suppress pest populations. Here, we assessed the harmfulness of Delia radicum (L.) (Diptera: Anthomyiidae) on broccoli (Brassica oleracea var. italica Plenck). We worked inside insect-proof cages set up in the field with additional pitfall traps to remove ground-dwelling predators. Plants were manually infested with 10 levels of pest density ranging 0–100 individuals per plant, following a natural infestation pattern. Surprisingly, no plants died but almost 100% of the pests introduced died over the course of the experiment. However, all broccoli development and growth traits were negatively correlated with pest density and broccoli head mass at harvest decreased linearly with pest density. The observation over time of development and growth traits showed evidence of plant compensation, suggesting that the head mass of individual plants may have reached similar values if allowed to fully mature. The relationship between pest density and damage, together with forecast models of pest population dynamics could be used to develop decision support tools assessing the relevance of preventative treatments.
      PubDate: 2019-03-05
  • Wasabi versus red imported fire ants: preliminary test of repellency of
           microencapsulated allyl isothiocyanate against Solenopsis invicta
           (Hymenoptera: Formicidae) using bait traps in Taiwan
    • Abstract: Sea container has been identified as a major pathway for the unintended entry and spread of alien ant species. In Japan, red imported fire ants, Solenopsis invicta Buren (Hymenoptera: Formicidae), which are among the most harmful alien ants, were first detected in a shipping container from China in May 2017, and the invasion into Japan via the trade pathway is still continuing. To prevent containers contaminated with S. invicta and its establishment in Japan, control measures, such as repellents, are urgently required. The present study is the first to evaluate repellency of microencapsulated allyl isothiocyanate (AITC) against S. invicta, as a preliminary step to use the innovative equipment for invasive species management in sea containers. In a field in Taiwan heavily infested with S. invicta, a repellent test of microencapsulated AITC using bait traps showed that the equipment completely prevents S. invicta from accessing the bait. Due to its volatility and irritancy, AITC, a safe natural repellant in wasabi (Eutrema japonicum (Miq.) Kiudz), has not been used for pest management in containerized cargo. However, the encapsulation of AITC solves this problem by allowing controlled vapor release. Microencapsulated AITC has considerable potential as an effective measure to stop the spread of S. invicta through global trade.
      PubDate: 2019-02-27
  • Detection of volatile pheromone candidates from the white-spotted
           longicorn beetle, Anoplophora malasiaca (Coleoptera: Cerambycidae)
    • Abstract: Anoplophora malasiaca (Thomson) (Coleoptera: Cerambycidae) is a serious pest that affects various crop trees and landscapes in Japan. We collected and analyzed volatiles from male and female A. malasiaca. 4-(n-Heptyloxy)butan-1-ol and its aldehyde, pheromone components in A. glabripennis and A. chinensis, were detected in the male volatile extracts and nonanal both in the male and female volatile extracts. Nonanal was absent from the extracts of twigs of the willow host plant. Gas chromatograph-electroantennographic responses showed that nonanal and 4-(n-heptyloxy)butan-1-ol elicited responses from both male and female antennae, but 4-(n-heptyloxy)butanal did not. Volatiles of eight artificially reared males, analyzed every 3 or 4 days for 60 days from adult emergence showed that they all produced nonanal and 4-(n-heptyloxy)butan-1-ol. The two compounds produced no short-range female attraction but in males, the short-range attraction to nonanal was dose dependent and significant in a higher dose, but did not depend on 4-(n-heptyloxy)butan-1-ol. When wounded willow twigs were added to nonanal and 4-(n-heptyloxy)butan-1-ol, the frequency of male responses was higher than in all other treatments, but the same as wounded willow twigs alone. The wounded host plant willow twigs might thus be enough for male attraction. The identified volatiles from the beetles in the present study might have a weaker function for attraction from the distance compared to their host plant volatiles.
      PubDate: 2019-02-27
  • Seasonal occurrence and host range of the predatory gall midge Diadiplosis
           hirticornis (Diptera: Cecidomyiidae), a native natural enemy of
           Planococcus kraunhiae (Hemiptera: Pseudococcidae)
    • Abstract: Diadiplosis hirticornis Felt (Diptera: Cecidomyiidae) larvae feed on the eggs of mealybugs and are potentially useful biological control agents against the Japanese mealybug Planococcus kraunhiae Kuwana (Hemiptera: Pseudococcidae). However, a detailed life history and their wild hosts remain unclear preventing effective use of this gall midge in orchards. We surveyed the seasonal occurrence and natural hosts of D. hirticornis in Saga, Northern Kyushu, Japan. Based on field surveys using pumpkin traps baited with P. kraunhiae, two peaks were detected in the annual adult emergence of D. hirticornis in both 2015 and 2016. Therefore, this gall midge appears to have at least two generations a year. In this study, D. hirticornis was observed to feed on at least three species of Pseudococcidae, including the important pests P. kraunhiae and Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), in the field. However, D. hirticornis was not found on Icerya purchasi Maskell (Hemiptera: Margarodidae) collected from a neighboring site of P. kraunhiae colonies. These results suggest that the host range of D. hirticornis is restricted to only Pseudococcidae.
      PubDate: 2019-02-27
  • Geographic variation of temperature effects on initial colony development
           of Lasius japonicus (Hymenoptera: Formicidae)
    • Abstract: For Lasius japonicus Santschi (Hymenoptera: Formicidae), a common ant species in Japan, diapause induction is temperature dependent. To elucidate the geographic variation of its temperature dependence, new L. japonicus queens were collected immediately after nuptial flight from four sites at different latitudes: Kitami (44.1°N), Hakodate (41.8°N), Shizuku-ishi (39.7°N), and Okayama (34.7°N). The collected queens were reared for 100 days at four constant-temperature conditions (25 °C, 20 °C, 17.5 °C, and 15 °C) under a 12L:12D photoperiod. The queens began founding colonies immediately in all conditions. For all temperature conditions, daily change patterns of the average numbers of eggs, larvae, and pupae were similar among the Hakodate, Shizuku-ishi, and Okayama populations, but the development patterns of the Kitami colonies differed from those of the other three sites. Low temperatures strongly suppressed colony development of the Kitami population; development was weak even at moderate temperatures. For new queens of L. japonicus, solitary overwintering without rearing larvae is regarded as serving an important role in successful colony foundation under cool climate conditions. Results reported herein suggest that local temperatures exert important selective pressure on the timing of diapause induction and on colony development in northern populations.
      PubDate: 2019-02-13
  • A novel approach using microsporidia to estimate the flight route of the
           common cutworm, Spodoptera litura (Lepidoptera: Noctuidae)
    • Abstract: Microsporidia are unique fungi that exist as obligate intracellular parasites. Approximately 40% of the known microsporidian strains infect various insects. Due to their high host specificity, microsporidia have potential use as powerful biological pesticides. Here, we analyzed microsporidian strains isolated from the common cutworm, Spodoptera litura Fabricius (Lepidoptera: Noctuidae) of Japan and Taiwan, which is considered a pest insect. Two experiments were performed: a comparison of spore size and a phylogenetic analysis using small subunit ribosomal RNA gene sequencing. We then estimated the flight routes of S. litura by using the phylogenetic relationships of the isolated microsporidian strains as a marker. An analysis of spore size indicated that the test strains comprised three groups: Pleistophora, Nosema or Vairimorpha, and Trachipleistophora or Vavraia. The results of the phylogenetic analysis suggested a classification into five genera, including Vavraia. The genus Vavraia was first detected from lepidopteran insects in Japan. We estimated the sources and flight routes of S. litura using phylogenetic data for the genera Nosema and Trachipleistophora. In this study, we used microsporidia as a novel marker to estimate sources and flight routes of S. litura from Ogasawara and Southern China to mainland Japan, demonstrating the usefulness of this approach.
      PubDate: 2019-02-07
  • The developmental parameters of the minute brown scavenger beetle
           Dienerella argus (Coleoptera: Latridiidae)
    • Abstract: Adult and larva Dienerella argus (Reitter) (Coleoptera: Latridiidae) feed on fungi and are frequently found in indoor, moldy areas. The basic biology of this species, other than its feeding habits, has not been determined. In this study, the developmental parameters of the beetle were investigated using dried hyphae and conidia from three fungi that are common in living areas. The developmental periods of the beetle on Cladosporium cladosporioides, Penicillium citrinum, and P. decumbens were examined at 15.5 ± 0.1, 19.4 ± 0.6, 23.5 ± 0.4, 27.3 ± 1.0, and 31.7 ± 2.4 °C (mean ± SD) under dark conditions. The lower developmental temperature threshold (T0 ± SE) and thermal constants (K ± SE) calculated from egg to adult emergence were 9.6 ± 1.15 °C and 545.5 ± 43.3 degree days (DD), 9.1 ± 0.35 °C and 483.1 ± 12.3 DD, and 10.7 ± 0.35 °C and 378.5 ± 9.3 DD on C. cladosporioides, P. citrinum, and P. decumbens, respectively. These developmental parameters indicate that this beetle can breed year-round in indoor areas that are in air-conditioned facilities. Based on the accumulated daily mean temperature above T0 (=10.7 °C on P. decumbens) in the garret, where the outbreak of D. argus had occurred, the number of generations per year was estimated at approximately eight.
      PubDate: 2019-02-01
  • Ovarian development related to pollen feeding in workers of the bumblebee
           Bombus ignitus (Hymenoptera: Apidae)
    • Abstract: Female bees need to develop their ovaries for oviposition, and it has been considered that the pollen nutrition would be important for ovarian development. However, few studies empirically examined the relationship between pollen intake and ovarian development. In the present study, we investigated the effect of pollen diet on ovarian development of female bees, using workers of Japanese bumblebee, Bombus ignitus (Smith). We reared newly emerged workers in two different diet conditions: (1) both pollen and nectar and (2) nectar only. We dissected the ovaries and ranked their development on day 0, 7 or 14 after emergence. In addition, to clarify whether pollen intake affects the status of ovarian development, we confirmed the presence or absence of pollen in the digestive tract. The stage of ovarian development was affected by treatments and number of days since emergence. The ovaries of workers that fed on pollen and nectar developed more than that fed on nectar only. Moreover, the ovaries of workers with pollen in the digestive tract developed more than those of workers without pollen. Our results demonstrated the importance of pollen feeding for promoting ovarian development of bumblebee workers.
      PubDate: 2019-02-01
  • Continuous variation in hind wing length of Galerucella grisescens
           (Coleoptera, Chrysomelidae, Galerucinae) and genetic basis of wing length
    • Abstract: Dispersal ability is an important trait for insects that affects their survival and distribution ranges. In this study, we focused on variations in hind wing length in Galerucella grisescens (Joannis 1866) (Coleoptera, Chrysomelidae, Galerucinae). We surveyed frequencies of long-winged (LW) and short-winged or micropterous (SW) individuals in various localities in Japan and conducted crossing experiments using LW and SW individuals to clarify the genetic basis of wing length determination. The SW individuals were mainly found in central Honshu (Kanto, Chubu, and Hokuriku districts), while the LW individuals were widely distributed from Hokkaido to the Southwest Islands of Japan. Hybrid offspring derived from LW and SW parents exhibited hind wings of medium length, and the wing length was maternally affected. These results suggest that the hind wing morph of G. grisescens is determined by polygenic quantitative traits, and the gene(s) of interest may occur on the X-chromosome or other maternal factors.
      PubDate: 2019-02-01
  • Qualitative real-time PCR identification of the khapra beetle, Trogoderma
           granarium (Coleoptera: Dermestidae)
    • Abstract: The identification of insect species is generally achieved by analyzing the specific morphological characteristics or, in more recent years, by polymerase chain reaction (PCR) assays of DNA sequences. PCR assays, which detect specific segments of DNA, have been established as a highly sensitive method for a wide range of applications, including the verification of hereditary diseases and for criminal investigations. For the identification of insects, the CO1 (cytochrome c oxidase subunit I) gene of mitochondrial (mt) DNA is often used. However, analyses of the entire mtDNA sequence might yield more reliable regions for use in the identification of insect species. Here we developed a method for real-time PCR identification of the khapra beetle, Trogoderma granarium Everts, by comparing the whole mtDNA sequences of three species of dermestid beetle: the khapra beetle, the varied carpet beetle, Anthrenus verbasci (L.), and the black carpet beetle, Attagenus unicolor japonicus Reitter. Several khapra beetle-specific mtDNA regions were identified and selected for use in the real-time PCR identification of these beetles based on Taq-Man® chemistry. Specificity tests conducted with the DNAs of several insects, including those of the three beetles described above, revealed that the primer/probe sets designed for the real-time PCR were highly specific to their targets.
      PubDate: 2019-02-01
  • Development of polymorphic microsatellite loci for Ceratosolen gravelyi
           (Hymenoptera: Agaonidae), the pollinating wasp of Ficus semicordata
           (Urticales: Moraceae)
    • Abstract: The interaction between figs and fig-pollinating wasps constitute one of the most tightly integrated pollination mutualisms. The use of molecular markers, especially microsatellite markers, has improved our understanding of important aspects of this mutualism like sex-ratio evolution, the presence of cryptic pollinator species, and its phylogeographic history. From an enriched (AG)n/(AC)n library, we developed ten polymorphic microsatellite loci for the fig-pollinating wasp Ceratosolen gravelyi, the pollinator of Ficus semicordata. A total of 74 alleles were detected in the population comprising of 41 individuals from three crops in the Xishuangbanna tropical rainforest. A number of alleles per locus ranged from 3 to 10. The observed heterozygosity was 0.537 ± 0.111 and the expected heterozygosity was 0.706 ± 0.112. No linkage disequilibrium was found between any two of the ten microsatellite loci. The newly isolated microsatellite markers will be very useful for wasp parentage analysis and the studying of fig-pollinating wasp sex-ratio mechanism.
      PubDate: 2019-02-01
  • Natural enemy enhancement and botanical insecticide source: a review of
           dual use companion plants
    • Abstract: Intensive agriculture, which is associated with heavy inputs of synthetic insecticides, has serious ecological impacts, leading to loss of vital ecosystem services including insect-mediated pest suppression. In recent years, efforts have been made towards obtaining safer options to chemical insecticides for sustainable pest management. Habitat manipulation is a part of conservation biological control which aims at providing floral resources, alternative prey and shelter to predators and parasitoids to enhance and sustain natural pest suppression. The use of plant extracts as botanical insecticides is also an important provisioning ecosystem service. Selection of plant species for habitat manipulation has focused mainly on plants with suitable floral qualities to support natural enemies. To increase the benefits, habitat manipulation plants that can provide multiple ecosystem services in addition to floral resources would be an ideal. In this review, we focus on the potential of achieving the dual ecosystem services of bioinsecticidal source plants in addition to the provision of floral resources from selected plant species. Our literature search found 283 plants species from 44 plant families that have been involved in habitat manipulation studies. Fifteen of these plant families have species that have been exploited for their insecticidal properties. Three families, Apiaceae, Asteraceae and Lamiaceae, have the largest number of species that have been used for both habitat manipulation and botanical insecticides. Of the four most popular habitat manipulation plants, alyssum Lobularia maritime (L.) Desv. (Brassicaceae), buck wheat Fagopyrum esculentum Moench (Polygonaceae), coriander Coriandrum sativum L. (Apiaceae) and phacelia Phacelia tanacetifolia Benth. (Boraginaceae), buckwheat and coriander have been used for insecticidal purposes whilst no records exist of phacelia and alyssum as botanical insecticide species. There is great potential for identifying plant species that can support natural enemies as well as providing potent plant extracts as botanical insecticides by selecting species from the Apiaceae, Asteraceae and Lamiaceae families.
      PubDate: 2019-02-01
  • Rapid development and characterization of EST-SSR markers for the honey
           locust seed beetle, Megabruchidius dorsalis (Coleoptera: Bruchidae), using
           de novo transcriptome analysis based on next-generation sequencing
    • Abstract: We developed 10 novel simple sequence repeat markers from expressed sequence tags for the honey locust seed beetle, Megabruchidius dorsalis Fåhraeus 1839 (Coleoptera: Bruchidae, using de novo transcriptome analysis based on next-generation sequencing. In a M. dorsalis Harataima (Kanagawa-pref.) population, the number of alleles per locus ranged from 2 to 6, with an average of 4.0. Observed and expected heterozygosities ranged from 0.13 to 0.72 and 0.17 to 0.72, respectively. We initially developed 11 novel markers, but one was eliminated because it showed significant linkage disequilibrium with another locus after Bonferroni correction. To check the applicability of the remaining 10 markers, we used them to analyze two additional geographic populations (Yashima, Akita-pref., and Kameoka, Kyoto-pref.). Mean numbers of alleles per locus in the Yashima and Kameoka populations were 2.6 and 2.9, respectively, with corresponding mean observed heterozygosities of 0.36 and 0.52. These results based on the two additional populations confirm that our developed markers worked efficiently. The simple sequence repeat markers developed from expressed sequence tags in the present study should, therefore, be useful for explicating the population genetic structure of M. dorsalis and for future paternal analyses.
      PubDate: 2019-02-01
  • PCR-based species identification applied in Japanese pear orchards to
           survey seasonal proportion changes of phytoseiid mite species
    • Abstract: For this study, we developed a PCR-based method to identify the ribosomal internal transcribed spacer (ITS) sequences of six phytoseiid mite species found in Japanese pear orchards: Neoseiulus californicus (McGregor), Neoseiulus womersleyi (Schicha), Neoseiulus makuwa (Ehara), Amblyseius eharai Amitai and Swirski, Gynaeseius liturivorus (Ehara), and Amblyseius swirskii Athias-Henriot. Using the method, we can show seasonal proportion changes of phytoseiid mite species composition in Japanese pear orchards. Genomic DNA extracted individually from phytoseiid mites collected in the orchards are subjected to PCR of the ITS sequences using a universal primer set of which nucleotide sequences are conserved among the six phytoseiid mite species. Then, DNA samples showing PCR products with the universal primer set are used for another PCR of the ITS sequences using species-specific primer sets designed for respective phytoseiid mite species. Species-specific PCR is conducted in order of decreasing dominance of phytoseiid mite species. The method, which specifically identifies the six phytoseiid mite species irrespective of their sexes and developmental stages, might be useful for researchers who are lacking adequate morphological identification skills and nucleotide sequencing systems at their institutions.
      PubDate: 2019-02-01
  • Morphology and development of the short wing in the seasonal dimorphism of
           the tussock moth, Orgyia thyellina (Lepidoptera: Lymantriidae): comparison
           with the long wing
    • Abstract: In the tussock moth, Orgyia thyellina Butler, the female adults produced from the larvae reared under a short-day (SD) photoperiod are short-winged, while those under a long-day (LD) photoperiod are long-winged as most lepidopterans are. To characterize morphology and development of the short wing of the SD adult, we examined the adult and pupal wings of the SD and LD females by optical and scanning electron microscopy. The examination of the adult wings showed that the wings of the SD females are much thicker and rougher than those of the LD females. The wing veins of the former look wavy, while those of the latter straight. The wing scale morphology of the former was similar to that of the latter, while the scale density of the former was much higher than that of the latter. The examination of the fully developed pupal wings showed that the wings of the SD pupae are morphologically similar to those of the LD pupae, and also to the short wings of the SD adults. The results indicate that the short wing of the SD adult is developed almost without spreading the fully developed pupal wing, unlike the previously reported processes of the short wing development involving massive cell death.
      PubDate: 2019-02-01
  • Baseline susceptibility and assessment of resistance risk to flubendiamide
           and chlorantraniliprole in Tuta absoluta (Lepidoptera: Gelechiidae)
           populations from Kuwait
    • Abstract: The tomato leafminer, Tuta absoluta (Meyrick), is one of the most destructive pests of tomato worldwide. T. absoluta has developed resistance to a wide range of insecticides in the field. This study aimed to assess the baseline toxicity of field populations of T. absoluta to flubendiamide and chlorantraniliprole, diamide insecticides recently registered to control the pest in Kuwait. Subsequently, the risk of resistance evolving as well as inheritance of resistance to the insecticides was investigated. The susceptibility variation among the populations tested was low (threefold for flubendiamide and fourfold chlorantraniliprole). The LC50 values for flubendiamide ranged from 0.04 to 0.11 mg L−1, whereas the LC50 values for chlorantraniliprole ranged from 0.29 to 1.13 mg L−1. After 34 generations of selection, 750- and 860-fold increases in resistance were recorded for flubendiamide and chlorantraniliprole, respectively. The realized heritability (h2) of resistance was estimated as 0.21 for flubendiamide and 0.29 for chlorantraniliprole, using threshold trait analysis. The values of the response quotient (Q) for resistance against flubendiamide and chlorantraniliprole were 0.11 and 0.13, respectively. We discussed our results with regard to the development of diamide resistance in T. absoluta, the potential spread of resistance, and strategies to mitigate the evolution of resistance.
      PubDate: 2019-02-01
  • Effects of temperature on the development, fecundity, and life table
           parameters of Riptortus pedestris (Hemiptera: Alydidae)
    • Abstract: Riptortus pedestris (Fabricius) (Hemiptera: Alydidae) is an economically important insect pest of soybean. We investigated the developmental periods of each life stage as well as adult longevity and female fecundity. The study was conducted at eleven constant temperatures (12.0, 14.0, 15.9, 17.3, 19.3, 23.6, 28.3, 31.2, 34.2, 35.1, and 36.1 °C) for temperature-dependent development, and six constant temperatures (15.8, 19.7, 24.0, 27.8, 32.6, and 35.5 °C) for adult longevity and oviposition. Riptortus pedestris females showed successful egg-to-adult development from 17.9 to 36.1 °C, but failed to complete development under 15.9 °C. Using linear regression, lower developmental threshold (LDT) and thermal constant (K) for the total immature stage were estimated as 14.1 °C and 336.7°-day (DD), respectively. Higher and lower temperature threshold (TH and TL, respectively) were calculated using Lobry–Rosso–Flandrois (LRF) and Sharpe–Schoolfield–Ikemoto (SSI) models; a wider TL-to-TH temperature range (31.4 °C) was observed for LRF than for SSI (18.6 °C). The adult emergence frequency over the full range of constant temperatures was simulated using nonlinear developmental rate functions and the Weibull function. The daily egg production was predicted with respect to temperature and adult age. Biological characteristics of R. pedestris from different local populations are discussed.
      PubDate: 2019-02-01
  • A termite fungistatic compound, mellein, inhibits entomopathogenic fungi
           but not egg-mimicking termite ball fungi
    • Abstract: Social insects form colonies with close relatives and face a high degree of risk of herd infection by the same pathogen. To prevent the intrusion and infection of pathogens and parasites, social insects have developed strong antimicrobial defenses. Although termites have been considered to produce a variety of antimicrobial compounds to prevent microbial infections, only a few antimicrobial compounds have been identified in termites. Here, we show that a new fungistatic component mellein is identified in a subterranean termite Reticulitermes speratus (Kolbe) (Isoptera: Rhinotermitidae). Using gas chromatography–mass spectrometry analysis, we identified mellein, an isocoumarin compound with a broad antimicrobial activity, from hexane extracts of soldiers and workers. In addition, antifungal test demonstrated that mellein has an inhibitory effect on the growth of entomopathogenic fungi (Metarhizium anisopliae and Beauveria bassiana), while no such effect on the termite-egg-mimicking fungus ‘termite ball’ (Fibularhizoctonia sp.) and its related species (Athelia rolfsii). These results suggest that R. speratus use mellein to confront the pathogenic fungi and that the termite-egg-mimicking fungus has a resistance against mellein. This study contributes to our better understanding of the diverse anti-pathogenic defense in termites.
      PubDate: 2019-02-01
  • Laboratory and glasshouse evaluation of the green lacewing, Chrysopa
           pallens (Neuroptera: Chrysopidae) against the western flower thrips,
           Frankliniella occidentalis (Thysanoptera: Thripidae)
    • Abstract: Western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is an important invasive polyphagous pest in vegetable and ornamental crops. The increasing resistance to chemical insecticides in F. occidentalis has resulted in heightened interest in alternative control methods including the generalist entomophagous predator Chrysopa pallens (Rambur) (Neuroptera: Chrysopidae). The first part of this study evaluated the prey capacity of the three larval instars of C. pallens on F. occidentalis larvae, using functional responses. The C. pallens larvae exhibited a type III functional response to the F. occidentalis larvae. When offered 80 thrips larvae, 34–41 were consumed by a single C. pallens larvae within 24 h. The second part examined the effects of releasing C. pallens to control F. occidentalis on glasshouse-cultivated cucumber plants. In comparison with the control, releases of C. pallens larvae at densities of 2, 4, 8, and 16 per plant led to a reduction in F. occidentalis by 11%, 39%, 59%, and 68% of the larvae and 12%, 43%, 58%, and 68% of the adults, respectively, after 5 weeks. Our results suggested that the C. pallens may be an effective biological control agent for use against F. occidentalis.
      PubDate: 2019-02-01
School of Mathematical and Computer Sciences
Heriot-Watt University
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