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Semina: Ciências Agrárias
Article . 2007 . Peer-reviewed
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Semina: Ciências Agrárias
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Não-preferência do ácaro-vermelho, Oligonychus yothersi McGregor (Acari: Tetranychidae), para oviposição em folhas de progênies de erva-mate (Ilex paraguariensis)

Authors: Luis Francisco Angeli Alves; Cristhiane Rohde; Dayanne Fabrício Bressan; José Djair Vendramim;

Não-preferência do ácaro-vermelho, Oligonychus yothersi McGregor (Acari: Tetranychidae), para oviposição em folhas de progênies de erva-mate (Ilex paraguariensis)

Abstract

A preferencia para oviposicao do acaro-vermelho, Oligonychus yothersi McGregor, foi avaliada em condicoes de laboratorio em 52 progenies de erva-mate e uma testemunha coletada em uma propriedade da regiao. Os experimentos foram realizados em discos foliares de erva-mate (2 cm de diâmetro), infestados com uma femea adulta do acaro, e incubados a 25±1oC e 14h de fotofase, durante cinco dias. As avaliacoes foram realizadas diariamente, contando-se o numero de ovos depositados no periodo, numero de femeas que fugiram nas primeiras 48 horas e numero de ovos depositados antes da fuga. Verificou-se que houve discriminacao do acaro em dois grupos de progenies, em relacao ao numero de ovos, um que diferiu em relacao a testemunha (53,8% de progenies) e outro que se igualou a mesma (46,2% das progenies). No primeiro grupo, houve menor oviposicao em 60,7% das progenies, enquanto que em cerca de 39,3% ocorreu maior oviposicao (media de 3,1 ovos/femea). Em 57,7% das progenies houve fuga das femeas (10 a 40%), sendo que em 10 dessas progenies nao ocorreu oviposicao antes da fuga. Os dados indicam que em algumas das progenies de erva-mate testadas ha resistencia por nao-preferencia para oviposicao ao acaro-vermelho.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold