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Brassica aphid (Hemiptera: Aphididae) populations are conditioned by climatic variables and parasitism level: a study case of Triângulo Mineiro, Brazil

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10.1017/S0007485317000220
 
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hdl:2117/130097

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Sampaio, M. V.
Korndörfer, A. P.
Pujade Villar, Juli
Hubaide, J.E.A.
Ferreira, S. E.
Arantes, S. O.
Bortoletto, D. M.
Guimarães, C. M.
Sánchez Espigares, Josep AntonMés informacióMés informacióMés informació
Caballero López, Berta
Document typeArticle
Defense date2017-03-20
Rights accessRestricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Cosmopolitan pests such as Brevicoryne brassicae, Lipaphis pseudobrassicae, and Myzus persicae (Aphididae) cause significant damage to Brassicaceae crops. Assessment of the important biotic and abiotic factors that regulate these pests is an essential step in the development of effective Integrated Pest Management programs for these aphids. This study evaluated the influence of leaf position, precipitation, temperature, and parasitism on populations of L. pseudobrassicae, M. persicae, and B. brassicae in collard greens fields in the Triângulo Mineiro region (Minas Gerais state), Brazil. Similar numbers of B. brassicae were found on all parts of the collard green plants, whereas M. persicae and L. pseudobrassicae were found in greatest numbers on the middle and lower parts of the plant. While temperature and precipitation were positively related to aphid population size, their effects were not accumulative, as indicated by a negative interaction term. Although Diaeretiella rapae was the main parasitoid of these aphids, hyperparasitism was dominant; the main hyperparasitoid species recovered from plant samples was Alloxysta fuscicornis. Parasitoids seem to have similar distributions on plants as their hosts. These results may help predict aphid outbreaks and gives clues for specific intra-plant locations when searching for and monitoring aphid populations.
CitationSampaio, M. [et al.]. Brassica aphid (Hemiptera: Aphididae) populations are conditioned by climatic variables and parasitism level: a study case of Triângulo Mineiro, Brazil. "Bulletin of entomological research", 20 Març 2017, vol. 107, núm. 3, p. 410-418. 
URIhttp://hdl.handle.net/2117/130097
DOI10.1017/S0007485317000220
ISSN0007-4853
Publisher versionhttps://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/brassica-aphid-hemiptera-aphididae-populations-are-conditioned-by-climatic-variables-and-parasitism-level-a-study-case-of-triangulo-mineiro-brazil/CE8A817606176F6439BA9B0FDBDD4CFF#
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  • ADBD - Anàlisi de Dades Complexes per a les Decisions Empresarials - Articles de revista [92]
  • Departament d'Estadística i Investigació Operativa - Articles de revista [604]
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