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

Impact

Altmetric

Export to

Please use this identifier to cite or link to this item: http://hdl.handle.net/11703/120389
Title: Brassica aphid (Hemiptera: Aphididae) populations are conditioned by climatic variables and parasitism level: a study case of Triângulo Mineiro, Brazil
Authors: Sampaio, Marcus V.
Korndörfer, Ana P.
Pujade-Villar, Juli
Caballero-López, Berta
Contributors: Consorci del Museu de Ciències Naturals de Barcelona
Issue Date: 20-Mar-2017
Keywords: Aphididae
Homoptera
Insectes paràsits
Plagues urbanes
Crops
Control de plagues
Access to document: http://hdl.handle.net/2072/376725
Citation: Volume 107, Issue 3, June 2017, p. 410-418
Publisher: Cambridge University Press
Extent: 24 p.
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.
Terms of use: CC-BY-NC-ND
Terms of use details: © Cambridge University Press 2017
Appears in Collections:Artròpodes / Articles

Files in This Item:
There are no files associated with this item.


All rights reserved
Metadata ruled by