Impact of moisture on survival of Aedes aegypti eggs and ovicidal activity of Metarhizium anisopliae under laboratory conditions

Memórias do Instituto Oswaldo Cruz

C Luz¹  Mhh Tai¹  Ah Santos¹  Hhg Silva¹ 

[1] ,Universidade Federal de Goiás Instituto de Patologia Tropical e Saúde Pública DMIPPGoiânia GO ,Brasil

关键词: entomopathogenic fungi;    mosquito;    egg;    biological control;   

DOI  :  10.1590/S0074-02762008000200016

来源: SciELO

【 摘 要 】

The effect of relative humidity (43%, 75%, 86% and > 98%) on Aedes aegypti eggs treated with Metarhizium anisopliae 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.

【 授权许可】

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