Culex tritaeniorhynchus check for this species in other resources - Culex vishnui - rice field - urea - India"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 6, 2003, pp. 789-791
Bioline Code: oc03160
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 6, 2003, pp. 789-791

 en SHORT COMMUNICATION - The Role of Urea in the Oviposition Behaviour of Japanese Encephalitis Vectors in Rice Fields of South India
IP Sunish; R Rajendran & R Reuben

Abstract

The effect of urea on the oviposition behaviour of culicine vectors of Japanese encephalitis was studied in rice fields. Gravid females had a strong preference for oviposition in urea treated areas in rice fields, while no such preference was exhibited in untreated areas. The egg laying declined in the area where urea treated water surface had a mechanical barrier, which allowed volatile fractions to escape, but prevented contact with the water. Urea was shown to act as an oviposition attractant/stimulant for Culex tritaeniorhynchus check for this species in other resources , but its role was not clear for Cx. vishnui, as the number of egg rafts obtained for the latter species was low.

Keywords
oviposition - Culex tritaeniorhynchus check for this species in other resources - Culex vishnui - rice field - urea - India

 
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