Trichoderma viride check for this species in other resources - secondary metabolites - mosquito oviposition attractancy - Culex quinquefasciatus check for this species in other resources "/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 2, 2003, pp. 223-226
Bioline Code: oc03059
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 2, 2003, pp. 223-226

 en Oviposition Response of the Mosquito, Culex quinquefasciatus check for this species in other resources to the Secondary Metabolite(s) of the Fungus, Trichoderma viride check for this species in other resources
I Geetha; KP Paily; V Padmanaban & K Balaraman

Abstract

Secondary metabolites produced by Trichoderma viride check for this species in other resources , a deuteromycetes fungus, under submerged culture condition were formulated and evaluated for oviposition attractancy against gravid females of Culex quinquefasciatus check for this species in other resources mosquito. At a concentration of 10µg ml -1 the formulation showed remarkable attractancy with an oviposition active index (OAI) of +0.52. When the oviposition attractancy of the formulation was compared with a known oviposition attractant, p-cresol, both at 10 µ g ml -1 , the former was found to be more attractive to result in 70% egg laying than the later with 30% egg laying. Thin layer chromatography fractions of the secondary metabolites showed that a fraction with Rf value of 0.88 was highly active as oviposition attractant with an OAI of +0.65. Further work on identification of the active principle(s) of the microbial formulation might lead to an oviposition attractant useful in mosquito vector management.

Keywords
Trichoderma viride check for this species in other resources - secondary metabolites - mosquito oviposition attractancy - Culex quinquefasciatus check for this species in other resources

 
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