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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 2, 2008, pp. 214-215
Bioline Code: oc08037
Full paper language: English
Document type: Short Communication
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 2, 2008, pp. 214-215

 en Impact of moisture on survival of Aedes aegypti check for this species in other resources eggs and ovicidal activity of Metarhizium anisopliae check for this species in other resources under laboratory conditions
Luz, C.; Tai, M.H.H.; Santos, A.H. & Silva, H.H.G.

Abstract

The effect of relative humidity (43%, 75%, 86% and > 98%) on Aedes aegypti check for this species in other resources eggs treated with Metarhizium anisopliae check for this species in other resources or water only was tested for up to a six months exposure at 25ºC. Survival of larvae inside eggs was clearly affected by the lowest humidity (43%) tested, and eclosion diminished at all humidities after increasing periods of exposure. M. anisopliae showed to have a strong ovicidal activity only at humidity close to saturation. No difference of activity was found between conidia and hyphal bodies tested. This fungus affected larvae inside eggs and has potential as a control agent of this important vector in breeding sites with high moisture.

Keywords
entomopathogenic fungi - mosquito - egg - biological control

 
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