Larval susceptibility of Ajuga remota against anopheline and culicine mosquitos.
The objective of the present study is to determine the bioefficacy of different crude extracts of Ajuga remota against anopheline and culicine larvae. Larval susceptibility of crude carbon-tetrachloride, methanol and petroleum-ether extracts of Ajuga remota leaves was observed against the malaria vector, Anopheles stephensi and the filariasis vector, Culex quinquefasciatus. Among the extracts tested, petroleum-ether extract was the most effective with LC50 values of 0.033% after 24 hours and 0.029% after 48 hours of treatment against the larvae of Anopheles stephensi. In the case of the larvae of Culex quinquefasciatus, the carbon-tetra-chloride extract exhibited maximum efficacy with LC50 values of 0.043% after 24 hours and 0.026% after 48 hours of exposure, respectively. It is, therefore, concluded that Ajuga remota can be applied as an ideal larvicide against An. stephensi and Cx. quinquefasciatus.
Sharma
Preeti
P
Applied Entomology and Vector Control Laboratory, Department of Zoology, Faculty of Science, Dayalbagh Educational Institute (Deemed University), Dayalbagh, Agra, India.
Mohan
Lalit
L
Srivastava
C N
CN
D031328:Ajuga / Q000737:chemistry*; D000473:Alkanes / Q000494:pharmacology; D000818:Animals; D000852:Anopheles / Q000187:drug effects*; D002251:Carbon Tetrachloride / Q000494:pharmacology; D003465:Culex / Q000187:drug effects*; D005368:Filariasis / Q000517:prevention & control; D006801:Humans; D007303:Insect Vectors / Q000187:drug effects*; D007814:Larva / Q000187:drug effects*; D008288:Malaria / Q000517:prevention & control; D000432:Methanol / Q000494:pharmacology; D009032:Mosquito Control / Q000379:methods*; D010936:Plant Extracts / Q000494:pharmacology*
D000473:Alkanes; D010936:Plant Extracts; D002251:Carbon Tetrachloride; C004544:naphtha; D000432:Methanol