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Publisher: Cambridge University Press   (Total: 371 journals)

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Showing 1 - 200 of 371 Journals sorted alphabetically
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 4, SJR: 0.733, CiteScore: 2)
Acta Numerica     Hybrid Journal   (Followers: 3, SJR: 6.709, CiteScore: 10)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 9)
Advances in Applied Mathematics and Mechanics     Full-text available via subscription   (SJR: 0.441, CiteScore: 1)
Aeronautical J., The     Hybrid Journal   (Followers: 3)
Africa     Hybrid Journal   (Followers: 19, SJR: 0.582, CiteScore: 1)
African Studies Review     Full-text available via subscription   (Followers: 18, SJR: 0.437, CiteScore: 1)
Ageing & Society     Hybrid Journal   (Followers: 40, SJR: 0.756, CiteScore: 2)
Agricultural and Resource Economics Review     Open Access   (Followers: 5, SJR: 0.414, CiteScore: 1)
AI EDAM     Hybrid Journal   (SJR: 0.375, CiteScore: 1)
AJS Review     Full-text available via subscription   (Followers: 2, SJR: 0.128, CiteScore: 0)
American Political Science Review     Hybrid Journal   (Followers: 258, SJR: 5.587, CiteScore: 4)
Anatolian Studies     Full-text available via subscription   (Followers: 4, SJR: 0.528, CiteScore: 1)
Ancient Mesoamerica     Hybrid Journal   (Followers: 10, SJR: 0.478, CiteScore: 1)
Anglo-Saxon England     Hybrid Journal   (Followers: 34, SJR: 0.1, CiteScore: 0)
animal     Hybrid Journal   (Followers: 3, SJR: 0.842, CiteScore: 2)
Animal Health Research Reviews     Hybrid Journal   (Followers: 3, SJR: 0.69, CiteScore: 2)
Animal Science     Full-text available via subscription   (Followers: 9)
Annals of Actuarial Science     Full-text available via subscription   (Followers: 1)
Annual of the British School at Athens     Full-text available via subscription   (Followers: 15, SJR: 0.177, CiteScore: 0)
Annual Review of Applied Linguistics     Hybrid Journal   (Followers: 36, SJR: 3.223, CiteScore: 4)
Antarctic Science     Hybrid Journal   (Followers: 1, SJR: 0.643, CiteScore: 1)
Antichthon     Full-text available via subscription   (Followers: 1, SJR: 0.101, CiteScore: 0)
Antiquaries J., The     Full-text available via subscription   (Followers: 8, SJR: 0.106, CiteScore: 0)
Antiquity     Hybrid Journal   (Followers: 27)
ANZIAM J.     Open Access   (Followers: 1, SJR: 0.216, CiteScore: 0)
Applied Psycholinguistics     Hybrid Journal   (Followers: 22, SJR: 0.945, CiteScore: 2)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 8, SJR: 0.404, CiteScore: 2)
Arabic Sciences and Philosophy     Hybrid Journal   (Followers: 9, SJR: 0.101, CiteScore: 0)
Arbor Clinical Nutrition Updates     Full-text available via subscription   (Followers: 3)
Archaeological Dialogues     Hybrid Journal   (Followers: 35, SJR: 0.898, CiteScore: 1)
Archaeological Reports     Full-text available via subscription   (Followers: 5, SJR: 0.128, CiteScore: 0)
arq: Architectural Research Quarterly     Hybrid Journal   (Followers: 8, SJR: 0.123, CiteScore: 0)
Asian J. of Comparative Law     Hybrid Journal   (Followers: 9, SJR: 0.129, CiteScore: 0)
Asian J. of Intl. Law     Hybrid Journal   (Followers: 14, SJR: 0.135, CiteScore: 0)
Asian J. of Law and Society     Hybrid Journal   (Followers: 7, SJR: 0.195, CiteScore: 0)
Astin Bulletin     Full-text available via subscription   (Followers: 1, SJR: 0.878, CiteScore: 1)
Australasian J. of Organisational Psychology     Hybrid Journal   (Followers: 9, SJR: 0.154, CiteScore: 1)
Australasian J. of Special Education     Full-text available via subscription   (Followers: 8, SJR: 0.187, CiteScore: 0)
Australian J. of Environmental Education     Full-text available via subscription   (Followers: 7, SJR: 0.403, CiteScore: 1)
Australian J. of Indigenous Education, The     Full-text available via subscription   (Followers: 10, SJR: 0.26, CiteScore: 1)
Australian J. of Rehabilitation Counseling     Full-text available via subscription   (Followers: 4, SJR: 0.144, CiteScore: 0)
Austrian History Yearbook     Full-text available via subscription   (Followers: 9, SJR: 0.161, CiteScore: 0)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 34, SJR: 0.595, CiteScore: 1)
Behaviour Change     Full-text available via subscription   (Followers: 13, SJR: 0.508, CiteScore: 1)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 140, SJR: 0.976, CiteScore: 2)
Bilingualism: Language and Cognition     Hybrid Journal   (Followers: 37, SJR: 1.446, CiteScore: 2)
Biofilms     Full-text available via subscription   (Followers: 1)
Bird Conservation Intl.     Hybrid Journal   (Followers: 24, SJR: 0.581, CiteScore: 1)
BJPsych Advances     Full-text available via subscription   (Followers: 54, SJR: 0.275, CiteScore: 0)
BJPsych Intl.     Open Access   (Followers: 2)
BJPsych Open     Open Access  
Brain Impairment     Full-text available via subscription   (Followers: 2, SJR: 0.321, CiteScore: 1)
Breast Cancer Online     Full-text available via subscription   (Followers: 4)
Britannia     Full-text available via subscription   (Followers: 7, SJR: 0.111, CiteScore: 0)
British Actuarial J.     Full-text available via subscription  
British Catholic History     Hybrid Journal   (Followers: 1, SJR: 0.133, CiteScore: 1)
British J. for the History of Science     Hybrid Journal   (Followers: 22, SJR: 0.235, CiteScore: 0)
British J. of Anaesthetic and Recovery Nursing     Full-text available via subscription   (Followers: 8)
British J. of Music Education     Hybrid Journal   (Followers: 24, SJR: 0.564, CiteScore: 1)
British J. Of Nutrition     Hybrid Journal   (Followers: 74, SJR: 1.612, CiteScore: 4)
British J. of Political Science     Hybrid Journal   (Followers: 168, SJR: 4.661, CiteScore: 4)
British J. of Psychiatry     Hybrid Journal   (Followers: 192, SJR: 2.844, CiteScore: 3)
Bulletin of Entomological Research     Hybrid Journal   (Followers: 11, SJR: 0.805, CiteScore: 2)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 0.555, CiteScore: 1)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 1, SJR: 0.44, CiteScore: 0)
Bulletin of the School of Oriental and African Studies     Hybrid Journal   (Followers: 19, SJR: 0.146, CiteScore: 0)
Business and Human Rights J.     Full-text available via subscription   (Followers: 3, SJR: 0.536, CiteScore: 1)
Business Ethics Quarterly     Full-text available via subscription   (Followers: 13, SJR: 1.098, CiteScore: 2)
Business History Review     Full-text available via subscription   (Followers: 15, SJR: 0.347, CiteScore: 1)
Cambridge Archaeological J.     Hybrid Journal   (Followers: 128, SJR: 1.121, CiteScore: 1)
Cambridge Classical J.     Full-text available via subscription   (Followers: 18, SJR: 0.101, CiteScore: 0)
Cambridge J. of Postcolonial Literary Inquiry     Hybrid Journal   (Followers: 7)
Cambridge Law J.     Hybrid Journal   (Followers: 167, SJR: 0.213, CiteScore: 0)
Cambridge Opera J.     Hybrid Journal   (Followers: 5, SJR: 0.14, CiteScore: 0)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 11, SJR: 0.299, CiteScore: 1)
Camden Fifth Series     Full-text available via subscription   (Followers: 3)
Canadian Entomologist     Hybrid Journal   (Followers: 5, SJR: 0.482, CiteScore: 1)
Canadian J. of Emergency Medicine     Hybrid Journal   (Followers: 12, SJR: 0.624, CiteScore: 1)
Canadian J. of Law & Jurisprudence     Full-text available via subscription   (Followers: 10, SJR: 0.237, CiteScore: 0)
Canadian J. of Law and Society     Hybrid Journal   (Followers: 20, SJR: 0.259, CiteScore: 1)
Canadian J. of Neurological Sciences     Full-text available via subscription   (SJR: 0.549, CiteScore: 1)
Canadian J. of Political Science/Revue canadienne de science politique     Full-text available via subscription   (Followers: 23, SJR: 0.385, CiteScore: 1)
Canadian J. on Aging     Hybrid Journal   (Followers: 10, SJR: 0.426, CiteScore: 1)
Canadian Yearbook of Intl. Law / Annuaire canadien de droit international     Full-text available via subscription   (Followers: 2)
Cardiology in the Young     Hybrid Journal   (Followers: 32, SJR: 0.372, CiteScore: 1)
Central European History     Full-text available via subscription   (Followers: 30, SJR: 0.159, CiteScore: 0)
Children Australia     Partially Free   (Followers: 2, SJR: 0.255, CiteScore: 0)
China Quarterly     Hybrid Journal   (Followers: 51, SJR: 2.289, CiteScore: 3)
Chinese J. of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Church History: Studies in Christianity and Culture     Full-text available via subscription   (Followers: 72, SJR: 0.106, CiteScore: 0)
Classical Quarterly     Full-text available via subscription   (Followers: 29, SJR: 0.204, CiteScore: 0)
Classical Review     Full-text available via subscription   (Followers: 25)
CNS Spectrums     Hybrid Journal   (Followers: 3, SJR: 1.391, CiteScore: 3)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 13)
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4, SJR: 0.839, CiteScore: 1)
Communications in Computational Physics     Full-text available via subscription   (Followers: 2, SJR: 1.048, CiteScore: 2)
Comparative Studies in Society and History     Full-text available via subscription   (Followers: 47, SJR: 0.585, CiteScore: 1)
Compositio Mathematica     Full-text available via subscription   (Followers: 1, SJR: 3.139, CiteScore: 1)
Contemporary European History     Hybrid Journal   (Followers: 25, SJR: 0.263, CiteScore: 1)
Continuity and Change     Hybrid Journal   (Followers: 12, SJR: 0.107, CiteScore: 0)
Dance Research J.     Full-text available via subscription   (Followers: 9, SJR: 0.211, CiteScore: 0)
Development and Psychopathology     Hybrid Journal   (Followers: 9, SJR: 2.068, CiteScore: 4)
Dialogue Canadian Philosophical Review/Revue canadienne de philosophie     Full-text available via subscription   (Followers: 3, SJR: 0.156, CiteScore: 0)
Diamond Light Source Proceedings     Full-text available via subscription  
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 13, SJR: 0.471, CiteScore: 1)
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 9, SJR: 0.561, CiteScore: 1)
Early China     Hybrid Journal   (Followers: 3)
Early Music History     Hybrid Journal   (Followers: 8, SJR: 0.101, CiteScore: 0)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5)
East Asian J. on Applied Mathematics     Full-text available via subscription   (SJR: 0.418, CiteScore: 1)
Ecclesiastical Law J.     Full-text available via subscription   (Followers: 6, SJR: 0.114, CiteScore: 0)
Econometric Theory     Hybrid Journal   (Followers: 16, SJR: 2.915, CiteScore: 1)
Economics and Philosophy     Hybrid Journal   (Followers: 14, SJR: 0.622, CiteScore: 1)
Edinburgh J. of Botany     Hybrid Journal   (SJR: 0.283, CiteScore: 1)
Eighteenth-Century Music     Hybrid Journal   (Followers: 11, SJR: 0.113, CiteScore: 0)
English Language and Linguistics     Hybrid Journal   (Followers: 24, SJR: 0.52, CiteScore: 1)
English Profile J.     Hybrid Journal   (Followers: 2)
English Today     Hybrid Journal   (Followers: 8, SJR: 0.279, CiteScore: 0)
Enterprise & Society : The Intl. J. of Business History     Hybrid Journal   (Followers: 17, SJR: 0.245, CiteScore: 1)
Environment and Development Economics     Hybrid Journal   (Followers: 33, SJR: 0.617, CiteScore: 1)
Environmental Conservation     Hybrid Journal   (Followers: 59, SJR: 1.028, CiteScore: 2)
Environmental Practice     Full-text available via subscription   (Followers: 3, SJR: 0.145, CiteScore: 0)
Epidemiology & Infection     Hybrid Journal   (Followers: 15, SJR: 1.128, CiteScore: 2)
Epidemiology and Psychiatric Sciences     Hybrid Journal   (Followers: 3, SJR: 1.494, CiteScore: 2)
Episteme     Hybrid Journal   (Followers: 12, SJR: 0.756, CiteScore: 1)
Equine and Comparative Exercise Physiology     Full-text available via subscription   (Followers: 6)
Ergodic Theory and Dynamical Systems     Hybrid Journal   (Followers: 2, SJR: 1.193, CiteScore: 1)
Ethics & Intl. Affairs     Full-text available via subscription   (Followers: 13, SJR: 0.557, CiteScore: 1)
European Constitutional Law Review (EuConst)     Full-text available via subscription   (Followers: 32, SJR: 1.009, CiteScore: 1)
European J. of Applied Mathematics     Hybrid Journal   (SJR: 0.52, CiteScore: 1)
European J. of Sociology     Hybrid Journal   (Followers: 30, SJR: 0.643, CiteScore: 1)
European Political Science Review     Hybrid Journal   (Followers: 21, SJR: 1.816, CiteScore: 2)
European Review     Hybrid Journal   (Followers: 17, SJR: 0.131, CiteScore: 0)
Experimental Agriculture     Hybrid Journal   (Followers: 13, SJR: 0.542, CiteScore: 1)
Expert Reviews in Molecular Medicine     Hybrid Journal   (Followers: 1, SJR: 1.647, CiteScore: 4)
Fetal and Maternal Medicine Review     Hybrid Journal   (Followers: 4)
Financial History Review     Full-text available via subscription   (Followers: 14, SJR: 0.238, CiteScore: 1)
Foreign Policy Bulletin     Hybrid Journal   (Followers: 6)
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Genetics Research     Hybrid Journal   (Followers: 4, SJR: 0.483, CiteScore: 1)
Geological Magazine     Hybrid Journal   (Followers: 16, SJR: 0.966, CiteScore: 2)
Glasgow Mathematical J.     Full-text available via subscription   (Followers: 1, SJR: 0.604, CiteScore: 0)
Global Constitutionalism     Hybrid Journal   (Followers: 16)
Global Mental Health     Open Access   (Followers: 7)
Government and Opposition     Full-text available via subscription   (Followers: 20, SJR: 0.965, CiteScore: 2)
Greece & Rome     Partially Free   (Followers: 21, SJR: 0.113, CiteScore: 0)
Hague J. on the Rule of Law     Full-text available via subscription   (Followers: 13, SJR: 0.271, CiteScore: 1)
Harvard Theological Review     Full-text available via subscription   (Followers: 66, SJR: 0.165, CiteScore: 0)
Health Economics, Policy and Law     Hybrid Journal   (Followers: 25, SJR: 0.745, CiteScore: 1)
Hegel Bulletin     Full-text available via subscription   (Followers: 1)
High Power Laser Science and Engineering     Open Access   (Followers: 3, SJR: 0.901, CiteScore: 3)
Historical J.     Hybrid Journal   (Followers: 34, SJR: 0.247, CiteScore: 1)
History in Africa     Full-text available via subscription   (Followers: 8)
Horizons     Partially Free   (Followers: 1, SJR: 0.129, CiteScore: 0)
Industrial and Organizational Psychology     Hybrid Journal   (Followers: 20, SJR: 0.916, CiteScore: 1)
Infection Control and Hospital Epidemiology     Full-text available via subscription   (Followers: 36, SJR: 1.97, CiteScore: 3)
Intl. & Comparative Law Quarterly     Full-text available via subscription   (Followers: 208, SJR: 0.369, CiteScore: 1)
Intl. J. of Asian Studies     Hybrid Journal   (Followers: 12, SJR: 0.143, CiteScore: 0)
Intl. J. of Astrobiology     Hybrid Journal   (Followers: 2, SJR: 0.548, CiteScore: 1)
Intl. J. of Cultural Property     Full-text available via subscription   (Followers: 13, SJR: 0.253, CiteScore: 1)
Intl. J. of Disability Management Research     Full-text available via subscription   (Followers: 8, SJR: 0.105, CiteScore: 0)
Intl. J. of Law in Context     Hybrid Journal   (Followers: 16, SJR: 0.275, CiteScore: 1)
Intl. J. of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8, SJR: 0.184, CiteScore: 1)
Intl. J. of Middle East Studies     Hybrid Journal   (Followers: 66, SJR: 0.434, CiteScore: 0)
Intl. J. of Technology Assessment in Health Care     Hybrid Journal   (Followers: 13, SJR: 0.714, CiteScore: 1)
Intl. J. of Tropical Insect Science     Hybrid Journal   (Followers: 1, SJR: 0.334, CiteScore: 1)
Intl. Labor and Working-Class History     Full-text available via subscription   (Followers: 11, SJR: 0.182, CiteScore: 0)
Intl. Organization     Full-text available via subscription   (Followers: 90, SJR: 8.527, CiteScore: 5)
Intl. Psychogeriatrics     Hybrid Journal   (Followers: 12, SJR: 1.048, CiteScore: 2)
Intl. Review of Social History     Full-text available via subscription   (Followers: 25, SJR: 0.315, CiteScore: 1)
Intl. Review of the Red Cross     Full-text available via subscription   (Followers: 10, SJR: 0.214, CiteScore: 0)
Intl. Theory: A J. of Intl. Politics, Law and Philosophy     Hybrid Journal   (Followers: 18, SJR: 2.293, CiteScore: 2)
Iraq     Full-text available via subscription   (Followers: 2)
Irish Historical Studies     Hybrid Journal   (Followers: 5, SJR: 0.103, CiteScore: 0)
Irish J. of Psychological Medicine     Hybrid Journal   (Followers: 2, SJR: 0.221, CiteScore: 0)
Israel Law Review     Hybrid Journal   (Followers: 2, SJR: 0.165, CiteScore: 0)
Itinerario     Full-text available via subscription   (Followers: 9, SJR: 0.158, CiteScore: 0)
J. of African History     Hybrid Journal   (Followers: 21, SJR: 0.348, CiteScore: 1)
J. of African Law     Full-text available via subscription   (Followers: 3, SJR: 0.113, CiteScore: 0)
J. of Agricultural and Applied Economics     Open Access   (Followers: 1, SJR: 0.263, CiteScore: 1)
J. of Agricultural Science     Full-text available via subscription   (Followers: 8, SJR: 0.563, CiteScore: 1)
J. of American Studies     Hybrid Journal   (Followers: 20, SJR: 0.164, CiteScore: 0)
J. of Anglican Studies     Hybrid Journal   (Followers: 6, SJR: 0.101, CiteScore: 0)
J. of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
J. of Asian Studies     Full-text available via subscription   (Followers: 37, SJR: 0.591, CiteScore: 1)
J. of Benefit-Cost Analysis     Hybrid Journal   (Followers: 2)
J. of Biosocial Science     Hybrid Journal   (Followers: 3, SJR: 0.48, CiteScore: 1)
J. of British Studies     Full-text available via subscription   (Followers: 31, SJR: 0.246, CiteScore: 0)
J. of Child Language     Hybrid Journal   (Followers: 20, SJR: 1.035, CiteScore: 2)
J. of Classics Teaching     Open Access  
J. of Dairy Research     Full-text available via subscription   (Followers: 7, SJR: 0.573, CiteScore: 1)
J. of Demographic Economics     Hybrid Journal   (Followers: 3, SJR: 1.227, CiteScore: 1)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.843, CiteScore: 2)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of East Asian Studies     Full-text available via subscription   (Followers: 12, SJR: 0.59, CiteScore: 1)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.138, CiteScore: 0)
J. of Economic History     Full-text available via subscription   (Followers: 44, SJR: 1.82, CiteScore: 2)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 5, SJR: 2.526, CiteScore: 2)

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Journal Cover
Bulletin of Entomological Research
Journal Prestige (SJR): 0.805
Citation Impact (citeScore): 2
Number of Followers: 11  
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0007-4853 - ISSN (Online) 1475-2670
Published by Cambridge University Press Homepage  [371 journals]
  • BER volume 108 issue 4 Cover and Front matter
    • PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485318000524
      Issue No: Vol. 108, No. 4 (2018)
  • BER volume 108 issue 4 Cover and Back matter
    • PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485318000536
      Issue No: Vol. 108, No. 4 (2018)
  • Empoasca+vitis+Göthe+(Hemiptera:+Cicadellidae):+olfactory+and+visual+effects+on+their+orientation&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+M.+Tukayo,+L.+Yu,+W.+Fang,+D.+Luo&rft_id=info:doi/10.1017/S0007485317000931">Host-location behavior of the tea green leafhopper Empoasca vitis Göthe
           (Hemiptera: Cicadellidae): olfactory and visual effects on their
    • Authors: X. Zhang; T. Pengsakul, M. Tukayo, L. Yu, W. Fang, D. Luo
      Pages: 423 - 433
      Abstract: The tea green leafhopper, Empoasca vitis Göthe, is one of the most serious pests in tea growing areas. This study investigated the roles played by olfaction and vision in host orientation behavior. The compound eye of E. vitis was found to be a photopic eye; few olfactory sensilla were found on the antennae, while abundant gustatory sensilla were recorded on the mouthparts. Three opsin genes (EV_LWop, EV_UVop, EV_Bop) were isolated and found to be mainly expressed in the compound eye compared with other parts of the body. Immunolocalization indicated that the opsins mainly located in the different regions of rhabdom. The transcription levels of EV_LWop, EV_Bop and EV_UVop were reduced by 77.3, 70.0 and 40.0%, respectively, by RNA interference induced by being fed a special RNA-rich diet for 6 days. The rate of tropism to host color was effectively impaired by 67.6 and 29.5% in the dsEV_LWop and dsEV_Bop treatment groups, but there was no significant change in the dsEV_UVop group. The determination of the cause of the tropism indicated that odors from the host over long distances were unable to attract E. vitis and were only detected when the insects were close to the host. The developed compound eye of E. vitis plays a leading role in host location, and the long-wavelength opsin significantly affects the tropism to host color; the lack of olfactory sensilla results in long-distance odors not being able to be detected until the insect is near to the host-plant. The understanding of these behavioral mechanisms, especially the importance of opsin genes is expected to be useful for pest management.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000931
      Issue No: Vol. 108, No. 4 (2018)
  • Microbial composition affects the performance of an artificial Tephritid
           larval diet
    • Authors: P. Rempoulakis; S. Sela (Saldinger), E. Nemny-Lavy, R. Pinto, A. Birke, D. Nestel
      Pages: 434 - 441
      Abstract: The present study investigated the patterns of microorganisms in an artificial larval diet during Dacus ciliatus (Diptera; Tephritidae) larval development. Microbial population contents in the diet of total heterotrophic bacteria, yeast and molds, coliform and lactobacilli, and their dynamics during development, were monitored. Initially, the microbial composition in diet trays failing to produce viable pupae and in trays successfully producing pupae and adult flies was characterized. The failing diet trays contained large populations of lactobacilli that increased during larval development, and low populations of coliforms. In contrast, the successful diet showed an increasing population of coliforms and a low, or undetected, population of lactobacilli. To study the hypothesis that lactobacilli affect D. ciliatus larval development, we conducted controlled inoculation experiments in which Lactobacillus plantarum was added into fresh diet at the time of egg seeding. L. plantarum inoculated trays showed no production of D. ciliatus. Control trays without lactobacilli inoculation showed variable results. One tray successfully produced viable pupae and adults, and showed a slight and slow increase in the indigenous populations of lactobacilli. The second tray, however, failed to produce pupae and showed a fast increase of the indigenous lactobacilli to very high levels. Monitored pH trends in L. plantarum-inoculated diet showed a sharp pH decrease during the first 4 days of larval development from 5 to less than 4 units, while successful diet, producing viable D. ciliatus pupae and adults, showed a moderate pH drop during most of the larval development period. The paper discusses the possible ecological interactions between D. ciliatus larvae, the microbial content of the diet and the physical properties of the diet. The discussion also points out at the usefulness of this approach in understanding and managing mass production parameters of tephritid fruit flies industrial diets used for Sterile Insect Technique.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000943
      Issue No: Vol. 108, No. 4 (2018)
  • Aedes+aegypti+and+Aedes+albopictus+in+Sri+Lanka+under+laboratory+settings&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+L.+Udayanga,+A.+Wijegunawardena,+W.+Abeyewickreme&rft_id=info:doi/10.1017/S0007485317000955">Oviposition preferences of dengue vectors; Aedes aegypti and Aedes
           albopictus in Sri Lanka under laboratory settings
    • Authors: N. Gunathilaka; T. Ranathunge, L. Udayanga, A. Wijegunawardena, W. Abeyewickreme
      Pages: 442 - 450
      Abstract: Investigations on oviposition behaviour of dengue vectors are critical for effective controlling of vector breeding. Therefore, the aim of the present study was to determine the oviposition behaviour of dengue vectors, Aedes aegypti and Aedes albopictus in Sri Lanka. Batches of 1000 adult mosquitoes (1 : 1, male: female ratio) housed in rearing cages were used for each experimental setup from Ae. aegypti and Ae. albopictus. Oviposition responses with respect to the size of the ovitrap, colours of the ovitrap, water source, sodium chloride (NaCl) concentration and presence/absence of larvae were evaluated by enumerating the number of eggs laid in the ovitraps. The analysis of variance and cluster analysis were used to investigate the significance in the variations among oviposition. The number of eggs laid by both species were improved with the increasing size of ovitraps. Ae. albopictus indicated the highest mean number of eggs in 0.2% of NaCl than in the ovitraps filled with distilled water. However, the egg laying preference was reduced with increasing salinity in both species. Drain water with low dissolved oxygen (DO) level (0.43 ± 0.12 mg l−1) was the preferred water source for both species, while a significantly high oviposition rate was observed in ovitraps with larvae. Black colour ovitraps attracted the majority of gravid females, while white was least preferred. There were no significant variations among oviposition behaviours of Ae. albopictus and Ae. aegypti. The ability of these vectors to breed in waste water with low DO levels may lead them to attain wide dissemination in the natural environment, enhancing their potential threat to human life.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000955
      Issue No: Vol. 108, No. 4 (2018)
  • Anoplolepis+gracilipes,+in+Arnhem+Land,+Australia&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+M.A.M.+Gruber,+P.J.+Lester&rft_id=info:doi/10.1017/S0007485317000967">Indirect evidence of pathogen-associated altered oocyte production in
           queens of the invasive yellow crazy ant, Anoplolepis gracilipes, in Arnhem
           Land, Australia
    • Authors: M.D. Cooling; B.D. Hoffmann, M.A.M. Gruber, P.J. Lester
      Pages: 451 - 460
      Abstract: Anoplolepis gracilipes is one of the six most widespread and pestiferous invasive ant species. Populations of this invader in Arnhem Land, Australia have been observed to decline, but the reasons behind these declines are not known. We investigated if there is evidence of a pathogen that could be responsible for killing ant queens or affecting their reproductive output. We measured queen number per nest, fecundity and fat content of queens from A. gracilipes populations in various stages of decline or expansion. We found no significant difference in any of these variables among populations. However, 23% of queens were found to have melanized nodules, a cellular immune response, in their ovaries and fat bodies. The melanized nodules found in dissected queens are highly likely to indicate the presence of pathogens or parasites capable of infecting A. gracilipes. Queens with nodules had significantly fewer oocytes in their ovaries, but nodule presence was not associated with low ant population abundances. Although the microorganism responsible for the nodules is as yet unidentified, this is the first evidence of the presence of a pathogenic microorganism in the invasive ant A. gracilipes that may be affecting reproduction.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000967
      Issue No: Vol. 108, No. 4 (2018)
  • Rhagoletis+fruit+flies+from+high+elevation+environments+with+acyclic+climatic+variability&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+R.+Lasa,+M.+Aluja&rft_id=info:doi/10.1017/S0007485317000979">The effect of winter length on duration of dormancy and survival of
           specialized herbivorous Rhagoletis fruit flies from high elevation
           environments with acyclic climatic variability
    • Authors: J. Rull; E. Tadeo, R. Lasa, M. Aluja
      Pages: 461 - 470
      Abstract: Dormancy can be defined as a state of suppressed development allowing insects to cope with adverse conditions and plant phenology. Among specialized herbivorous insects exploiting seasonal resources, diapause frequently evolves as a strategy to adjust to predictable plant seasonal cycles. To cope with acyclic and unpredictable climatic events, it has been found for some insects that a proportion of the population undergoes prolonged dormancy. We compared the response of three species in the Rhagoletis cingulata species group exploiting plants differing in fruiting phenology from environments varying in frequency and timing of acyclic climatic catastrophic events (frost during flowering and fruit set) and varying also in the time of the onset of the rainy season. Small proportions (
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000979
      Issue No: Vol. 108, No. 4 (2018)
  • Nilaparvata+lugens+Stål)+in+Cambodia+using+genotyping-by-sequencing&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+Kazuyuki+Doi,+Kasumi+Ito,+Kazuhito+Kawakita,+Toshiharu+Tanaka&rft_id=info:doi/10.1017/S0007485317000992">Regional population differences of the brown planthopper (Nilaparvata
           lugens Stål) in Cambodia using genotyping-by-sequencing
    • Authors: M. Matsukawa; Mikako Tasaki, Kazuyuki Doi, Kasumi Ito, Kazuhito Kawakita, Toshiharu Tanaka
      Pages: 471 - 478
      Abstract: The brown planthopper Nilaparvata lugens Stål (BPH) can be found year-round in tropical region and causes severe damage to rice. Although there has been documented BPH damage to rice crops in the past decade in Cambodia, the extent of this epidemic is poorly understood. Here, we examined the time variation of BPH population in the abundance of morphotypes in 13 main rice-producing provinces (86 sites) by aspirator method and in the Takeo Province (five sites) by yellow sticky trap method. At least three generations were observed during the 3-month collection period in the rainy growing season. Regarding the occurrence of BPH morphotypes, in July the macropterous adults were restricted to south Cambodia and in August all morphotypes, adults (macropterous and brachypterous) and nymphs, appeared in all sampling sites. To explain the difference of regional distribution, the genetic differentiation was analyzed in south and northwest Cambodia (three sites) by using single nucleotide polymorphisms (SNP) analysis via genotyping-by-sequencing (GBS) using next-generation sequencing. The 2455 SNPs obtained by GBS clarified the three sub-populations and they corresponded to the expected dissemination patterns. These results provide a clue to understand the differentiation and epidemic of BPH in Cambodia.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317000992
      Issue No: Vol. 108, No. 4 (2018)
  • Sulfur fertilization increases defense metabolites and nitrogen but
           decreases plant resistance against a host-specific insect
    • Authors: N.A. Santos; N.C. Teixeira, J.O.S. Valim, E.F.A. Almeida, M.G.A. Oliveira, W.G. Campos
      Pages: 479 - 486
      Abstract: We tested the sulfur-modulated plant resistance hypothesis using potted cabbage (Brassica oleracea var. capitata) plants that were grown without and with increasing levels of sulfur fertilization. Changes in plant chemical traits were assessed and developmental performance of Plutella xylostella, a highly host-specific leaf-chewing insect, was followed. Leaf sulfur concentration gradually increased with growing addition of sulfur in soil; however, there was a generalized saturation response curve, with a plateau phase, for improvements in total leaf nitrogen, defense glucosinolates and insect performance. Plutella xylostella performed better in sulfur-fertilized cabbage probably because of the higher level of nitrogen, despite of the higher content of glucosinolates, which are toxic for many non-specialized insects. Despite the importance of sulfur in plant nutrition and production, especially for Brassica crops, our results showed that sulfur fertilization could decrease plant resistance against insects with high feeding specialization.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001018
      Issue No: Vol. 108, No. 4 (2018)
  • Riptortus+pedestris&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+S.G.+Goto&rft_id=info:doi/10.1017/S0007485317001006">Cold acclimation increases cold tolerance independently of diapause
           programing in the bean bug, Riptortus pedestris
    • Authors: J. Rozsypal; M. Moos, S.G. Goto
      Pages: 487 - 493
      Abstract: The bean bug (Riptortus pedestris) is a pest of soybeans and other legumes in Japan and other Asian countries. It enters a facultative adult diapause on exposure to short days. While photoperiodism and diapause are well understood in R. pedestris, knowledge of cold tolerance is very limited, as is information on the effect of diapause on cold tolerance. We examined the effect of photoperiod, cold acclimation, and feeding status on cold tolerance in R. pedestris. We found that cold acclimation significantly increased survival at −10°C in both long- and short-day adult R. pedestris. Since the difference in cold survival between long- and short-day cold-acclimated groups was only marginal, we conclude that entering diapause is not crucial for R. pedestris to successfully pass through cold acclimation and become cold tolerant. We observed similar effects in 5th instar nymphs, with both long- and short-day cold-acclimated groups surviving longer cold exposures compared with non-acclimated groups. Starvation, which was tested only in adult bugs, had only a negligible and negative impact on cold survival. Although cold tolerance significantly increased with cold acclimation in adult bugs, supercooling capacity unexpectedly decreased. Our results suggest that changes in supercooling capacity as well as in water content are unrelated to cold tolerance in R. pedestris. An analysis of metabolites revealed differences between the treatments, and while several metabolites markedly increased with cold acclimation, their concentrations were too low to have a significant effect on cold tolerance.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001006
      Issue No: Vol. 108, No. 4 (2018)
  • Biochemical responses induced in galls of three Cynipidae species in oak
    • Authors: I. Kot; A. Jakubczyk, M. Karaś, U. Złotek
      Pages: 494 - 500
      Abstract: Gall-making Cynipidae manipulate the leaves of host plant to form galls where offspring find shelter and food. The relationship between oak gallwasp and biochemical mechanisms of galls still requires a better understanding. So, in this research, protein and phenolic compound contents, as well as the activity of antioxidative enzymes and pathogenesis-related (PR) proteins were determined. Galls caused by asexual generation of Cynips quercusfolii L., Neuroterus numismalis (Fourc.) and N. quercusbaccarum L., as a model were used. All cynipid species modified the protein levels of gall tissues, but they cannot be treated as protein sinks. Significantly higher levels of phenols were observed in the galled leaves and galls of all cynipid species when compared with the control tissues. Peroxidase and polyphenol oxidase activity was usually low or showed no activity in galled tissues of all species. PR proteins, such as chitinase and β-1,3-glucanase, had a similar activity profile. Their activity significantly increased in the leaves with galls of all cynipid species, especially those infested with C. quercusfolii. Data generated in this study clearly indicate that galling Cynipidae manipulate the biochemical machinery of the galls for their own needs. However, the pattern of the biochemical features of leaves with galls and galled tissues depends on gall-making species.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001055
      Issue No: Vol. 108, No. 4 (2018)
  • Pieris+brassicae+L.+(Lepidoptera:+Pieridae)&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+J.+Jalali+Sendi,+K.+Talebi+Jahroumi&rft_id=info:doi/10.1017/S0007485317001067">Biochemical characterization a digestive trypsin in the midgut of large
           cabbage white butterfly, Pieris brassicae L. (Lepidoptera: Pieridae)
    • Authors: A. Sharifloo; A. Zibaee, J. Jalali Sendi, K. Talebi Jahroumi
      Pages: 501 - 509
      Abstract: A comprehensive study on digestive trypsin was undertaken in the larval midgut of Pieris brassicae L. Results of enzymatic compartmentalization showed a significantly higher activity of crude trypsin in the anterior larval midgut rather than posterior-midgut. Using Diethylaminoethyl cellulose fast flow column chromatography a purified trypsin was obtained by specific activity of 21 U mg−1 protein, recovery of 22%, purification fold of 28-fold and molecular weight of 25 kDa. This purified enzyme showed the highest activity at pH 8 and the corresponding temperature of 40°C. However, the specific inhibitors used including 4-(2-Aminoethyl) benzenesulfonyl fluroride hydrochloride, N-p-Tosyl-L-lysine methyl ester hydrochloride and Soybean Trypsin Inhibitor significantly lowered the activity of the purified enzyme in vitro. Moreover, the activity of trypsin and likewise the nutritional indices were significantly altered in the larval midgut feeding upon the leaves treated by 1 mM concentration of each inhibitor in comparison with control. Determination of enzymatic characteristics of insect trypsins is crucial in paving the path for controlling pests by potential natural compounds via transgenic plants.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001067
      Issue No: Vol. 108, No. 4 (2018)
  • Galeruca+daurica+(Coleoptera:+Chrysomelidae)+and+their+expression+analysis&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+Z.-J.+Huo,+X.-R.+Zhou,+B.-P.+Pang&rft_id=info:doi/10.1017/S0007485317001079">Molecular cloning of heat shock protein 10 (Hsp10) and 60 (Hsp60) cDNAs
           from Galeruca daurica (Coleoptera: Chrysomelidae) and their expression
    • Authors: Y. Tan; Y. Zhang, Z.-J. Huo, X.-R. Zhou, B.-P. Pang
      Pages: 510 - 522
      Abstract: Galeruca daurica (Joannis) is a new outbreak pest in the Inner Mongolia grasslands in northern China. Heat shock protein 10 and 60 (Hsp10 and Hsp60) genes of G. daurica, designated as GdHsp10 and GdHsp60, were cloned by rapid amplification of cDNA ends techniques. Sequence analysis showed that GdHsp10 and GdHsp60 encoded polypeptides of 104 and 573 amino acids, respectively. Sequence alignment and phylogenetic analysis clearly revealed that the amino acids of GdHsp10 and GdHsp60 had high homology and were clustered with other Hsp10 and Hsp60 genes in insects which are highly relative with G. daurica based on morphologic taxonomy. The mRNA expression analysis by real-time PCR revealed that GdHsp10 and GdHsp60 were expressed at all development stages and in all tissues examined, but expressed highest in eggs and in adults’ abdomen; both heat and cold stresses could induce mRNA expression of GdHsp10 and GdHsp60 in the 2nd instar larvae; the two Hsp genes were expressed from high to low with the extension of treatment time in G. daurica eggs exposed to freezing point. Overall, our study provides useful information to understand temperature stress responses of Hsp60 and Hsp10 in G. daurica, and provides a basis to further study functions of Hsp60/Hsp10 relative to thermotolerance and cold hardiness mechanism.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001079
      Issue No: Vol. 108, No. 4 (2018)
  • Kalotermes+spp.+(Blattodea,+Termitoidae,+Kalotermitidae)&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+B.+Mantovani,+A.+Luchetti&rft_id=info:doi/10.1017/S0007485317001080">Molecular systematics, biogeography, and colony fusion in the European
           dry-wood termites Kalotermes spp. (Blattodea, Termitoidae, Kalotermitidae)
    • Authors: V. Scicchitano; F. Dedeine, B. Mantovani, A. Luchetti
      Pages: 523 - 531
      Abstract: European dry-wood termites belong to the genus Kalotermes (Kalotermitidae), one of the two termite genera in Europe. Until the recent description of two new species, Kalotermes italicus in Italy and Kalotermes phoenicae in the eastern Mediterranean area, Kalotermes flavicollis was the only taxon known in this region. The presence of additional entities, suggested by morphological and physiological variation observed in K. flavicollis, was supported by molecular studies revealing four distinct genetic lineages: lineage A, K. flavicollis sensu strictu, from the Aegean area to Italy; lineage B, in Tuscany; lineage SC, in Sardinia and Corsica; lineage SF, in southern France. Lineages A and B may form mixed colonies, suggesting hybridization. To draw a more detailed picture of Kalotermes evolution and biogeography in Europe, we analyzed samples from previously unsampled areas, such as Spain and southern Italy, by means of the highly informative cox1/trnL/cox2 mitochondrial DNA marker. Overall, phylogenetic analyses confirmed previously identified lineages and taxa, but widened the distribution of the lineage SC to the mainland and of the lineage SF to Spain and Portugal. Results further provided evidence for the synonymy between lineage B and K. italicus. Species delimitation analysis suggested that the three K. flavicollis lineages, as well as K. italicus, can be separate taxa. Data also suggest a possible interspecific hybridization between K. italicus and both K. flavicollis lineages A and SC.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001080
      Issue No: Vol. 108, No. 4 (2018)
  • Reticulitermes+grassei+Clément+(Isoptera:+Rhinotermitidae)&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&árdenas&rft.aufirst=A.M.&árdenas&,+D.+Toledo&rft_id=info:doi/10.1017/S0007485317001043">Suitability of multiple Mediterranean oak species as a food resource for
           Reticulitermes grassei Clément (Isoptera: Rhinotermitidae)
    • Authors: A.M. Cárdenas; P. Gallardo, D. Toledo
      Pages: 532 - 539
      Abstract: The subterranean termite Reticulitermes grassei Clément causes lesions in the trunk of Quercus suber L. by constructing feeding galleries, but no information is available regarding other Quercus species from the Mediterranean region. This work aimed to study the suitability of the other main oak species of Mediterranean forests as a food resource for R. grassei. Two experiments, choice and non-choice feeding, were conducted lasting for 15, 30, and 45 days each. In the non-choice experiment, termites were offered one of the following food types: Quercus suber, Quercus ilex L., Quercus faginea Lam, cork or Pinus pinea L., which was considered the control. The choice feeding experiment used all the same food types listed above, supplied simultaneously in the same container. Food selection was examined by analysing the relationships over time between surviving termites and food consumption. The results indicated that R. grassei could be considered a generalist species, as it consumed the cork and wood of all oak species, as well as displaying a clear preference for soft wood (pine). Correlation analysis indicated that consumption was not dependent on wood density. Survival of R. grassei was influenced by the time of exposure to different oak species, but a high survival rate was maintained over time in the pine treatment (upper 70% in the three experiments). Given these results, it can be concluded that all the oak species are a suitable food source for R. grassei.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001043
      Issue No: Vol. 108, No. 4 (2018)
  • Aedes+aegypti+in+Abidjan,+Côte+d'Ivoire&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+A.M.+Adja,+J.T.+Coulibaly,+K.F.+Bassa,+Y.L.+Konan,+K.E.+N'Goran&rft_id=info:doi/10.1017/S0007485317001109">Biology of two larval morphological phenotypes of Aedes aegypti in
           Abidjan, Côte d'Ivoire
    • Authors: N. Guindo-Coulibaly; N.R. Diakite, A.M. Adja, J.T. Coulibaly, K.F. Bassa, Y.L. Konan, K.E. N'Goran
      Pages: 540 - 546
      Abstract: Since 2008, several outbreaks of yellow fever and dengue occurred in Abidjan, the economic capital of Côte d'Ivoire. A better knowledge of the biology of Aedes aegypti populations, the main vector of yellow fever and dengue viruses, is necessary to tailor vector control strategies implemented in the city. This study was designed to determine some biological parameters, occurring during the life cycle of two morphological phenotypes of Ae. aegypti larvae. Mosquitoes were sampled in a suburb of Abidjan (Treichville) using the WHO layer-traps technique. Biological parameters were studied in laboratory under standard conditions of temperature (27°C ± 2°C) and relative humidity (80% ± 10%). Our results indicated that the mean eggs laid by females from ‘brown larvae’ (BL) (85.95, 95% confidence interval (CI 95%) 78.87–93.02) was higher than those from ‘white larvae’ (WL) (64.40%, CI 95% 55.27–73.54). The gonotrophic cycle was 3 and 4 days in females from BL and WL, respectively. The overall yield of breeding mosquitoes from BL (63.88%, CI 95% 62.61–65.14) was higher compared with those of mosquitoes from WL (59.73%, CI 95% 58.35–61.12). The sex ratio (male/female) was 0.95 and 1.68 in Ae. aegypti populations from BL and WL, respectively. Females from BL lived slightly longer than those from WL (t = −2.332; P = 0.021). This study shows that Ae. Aegypti populations from BL and WL present different biological parameters during their life cycle. This could have an implication on their ability to transmit human disease viruses such as dengue and yellow fever. Further molecular studies are needed to determine genetic divergence between these Ae. aegypti populations.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001109
      Issue No: Vol. 108, No. 4 (2018)
  • Diatraea+saccharalis+Fab.+(Lepidoptera:+Crambidae)&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+B.O.+Soares,+L.A.+Peternelli,+E.J.G.+Pereira,+M.H.P.+Barbosa&rft_id=info:doi/10.1017/S0007485317001183">Assessing resistance of sugarcane varieties to sugarcane borer Diatraea
           saccharalis Fab. (Lepidoptera: Crambidae)
    • Authors: A.C. Tomaz; A.E. Coutinho, B.O. Soares, L.A. Peternelli, E.J.G. Pereira, M.H.P. Barbosa
      Pages: 547 - 555
      Abstract: In this study, we investigated resistance traits to the sugarcane borer Diatraea saccharalis Fab. (Lepidoptera: Crambidae) in the leaves and stalks of six sugarcane cultivars in a series of greenhouse and laboratory assays. Investigation of plant factors and infestation rates to better discriminate stalk damage by the sugarcane borer indicated that infestation of 7-month-old, single plants with 20 larvae at the third or fourth instar per plant was suitable to assess tunneling length. Three cultivars (i.e. SP803280, RB928064, and RB835486) had lower stalk damage (i.e. tunnel length) than cultivar SP891115, which exhibited relatively greater susceptibility to tunneling by the borer. The time required for the larvae to enter the sugarcane stalk was longer for cultivar SP803280, indicating resistance traits on the stalk surface, which correlated with lower stalk damage. Larvae feeding on SP813250 stalks had the lowest weight gain, indicating that this cultivar has resistance traits to larval development within its stalks. Cultivars RB867515 and SP891115 resulted in the highest mortality of early-stage larvae feeding on leaves, indicating the presence of resistance factors in their leaves. Multi-trait cluster and principal component analyses placed the cultivars into three and four clusters, respectively. The cultivars placed in different groups that exhibited resistance to leaf feeding, stalk entrance, and tunneling by the sugarcane borer could be used for crossings in sugarcane breeding programs with the goal of obtaining higher levels of resistance to D. saccharalis.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001183
      Issue No: Vol. 108, No. 4 (2018)
  • Mahanarva+fimbriolata+(Hemiptera:+Cercopidae)&rft.title=Bulletin+of+Entomological+Research&rft.issn=0007-4853&,+B.O.+Soares,+K.N.+Kuki,+L.A.+Peternelli,+M.H.+Pereira+Barbosa&rft_id=info:doi/10.1017/S0007485317001110">Anatomical, morphological, and physiological responses of two sugarcane
           genotypes of contrasting susceptibility to Mahanarva fimbriolata
           (Hemiptera: Cercopidae)
    • Authors: C.G. Melo; A.C. Tomaz, B.O. Soares, K.N. Kuki, L.A. Peternelli, M.H. Pereira Barbosa
      Pages: 556 - 564
      Abstract: The purpose of this study was to investigate and compare root morpho-anatomical traits and physiological responses of susceptible (SP81–3250) and resistant (H. Kawandang) sugarcane genotypes exposed to the attack by nymphs of spittlebug Mahanarva fimbriolata (Stål) (Hemiptera: Cercopidae). Two experiments were conducted to compare the damage caused by spittlebug nymphs on fresh and dry biomass weight; lignin content in stalks; root anatomy; chlorophyll content; photosynthetic rate (A); carboxylation efficiency (A/Ci); stomatal conductance (gS) and transpiration rate (E) of these genotypes. SP81–3250 consistently obtained significantly higher damage scores than H. Kawandang in both experiments, confirming the previously observed level of resistance in each genotype. Attack by spittlebug nymphs had a much higher effect on both fresh and dry biomass weight, chlorophyll content, A, A/Ci, gs and E of SP81–3250, than that on H. Kawandang. Anatomical studies indicated the presence of aerenchyma tissue in the root cortex of SP81–3250, a feature which may facilitate penetration of the nymph's stylet into the vascular cylinder. In contrast, roots of H. Kawandang are characterized by having more dense and compact parenchyma cells. In addition, infested plants of this genotype contained an unidentified mucilaginous compound in the vascular cylinder of the roots. We conclude that resistance of H. Kawandang to spittlebug is related to the ability of this genotype to maintain normal chlorophyll content, as well as stomatal conductance and photosynthesis, thus, allowing for biomass accumulation under spittlebug attack, in contrast to SP81–3250. In addition, the presence of more compact and denser parenchymal cells, as well as that of an induced mucilaginous compound in the root's vascular cylinder, are likely to hinder host-feeding activity in nymphs, causing higher nymph mortality and therefore, reduced damage in plants of this genotype.
      PubDate: 2018-08-01T00:00:00.000Z
      DOI: 10.1017/S0007485317001110
      Issue No: Vol. 108, No. 4 (2018)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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