Anais da Sociedade Entomológica do Brasil (1999) 28, 343-345

André L. Lourenção, Valdir A. Yuki and Sérgio B. Alves (1999)
Epizootia de Aschersonia cf. goldiana em Bemisia tabaci (Homoptera: Aleyrodidae) Biótipo B no Estado de São Paulo
[Epizootics of Aschersonia cf. goldiana on Bemisia tabaci (Homoptera: Aleyrodidae) biotype B in the State of São Paulo, Brazil]
Anais da Sociedade Entomológica do Brasil 28 (2), 343-345
Abstract: The first observations on the presence of Bemisia tabaci biotype B (= B. argentifolii) in Brazil were made in the beginning of the 1990s in the State of São Paulo. Subsequently, this whitefly spread to other States. In the summer of 1997/98, B. tabaci biotype B reached Guaíra-Miguelopólis, an area of the State of São Paulo not previously infested, with high populations of the insect, mainly in soybean, cotton and vegetable crops. In the the first week of February 1998, during a survey in an abandoned field of soybean, an epizootic of Aschersonia cf. goldiana was recorded on this whitefly in the whole area, with total infection of nymphs in the lower surface of the leaves. At the same date, in two other soybean fields of the region, the incidence of this entomopathogen was low, but it increased in the following two weeks, reaching high control levels of the insect, which was similar to the previously observed field. This occurrence indicates A. cf. goldiana is a potential agent for biological control of B. tabaci biotype B.
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(original language: Portuguese)
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Database assignments for author(s): Sérgio Batista Alves, André Luiz Lourencao

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
population dynamics/epizootiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bemisia tabaci biotype MEAM1	Soybean (Glycine max)	Brazil (south)
	Bemisia tabaci biotype MEAM1	Cotton (Gossypium)	Brazil (south)
Aschersonia (anamorphic genus - entomopathogens)	Bemisia tabaci biotype MEAM1	Soybean (Glycine max)	Brazil (south)