International Journal of Pharma and Bio Sciences
ijpbs.net
editorijpbs@rediffmail.com (or) editorofijpbs@yahoo.com (or) prasmol@rediffmail.com
10.22376/ijpbs.2019.10.1.p1-12
Volume 6 Issue 3
2015 (July - September)
LARVICIDAL ACTIVITIES OF EXTRACTS OF STEM BARK OF ANNONA RETICULATA AGAINST FILARIAL VECTOR CULEX QUINQUEFASCIATUS
Crude and three different solvent viz. Petroleum ether, hexane, and ethyl acetate extracts of stem bark of lessThan i greaterThan Annona reticulata lessThan /i greaterThan Linn. ( lessThan i greaterThan A. reticulata lessThan /i greaterThan ), (Family Annonaceae) were taken for observation for mosquito larvicidal activity. Mortality percentages, Log probit analyses, regression equations, and R lessThan sup greaterThan 2 lessThan /sup greaterThan values were determined for crude as well as different solvent extracts. Crude extract showed good larvicidal potency. LC lessThan sub greaterThan 50 lessThan /sub greaterThan values of Petroleum ether, hexane, and ethyl acetate extracts of stem bark of the plant were 15.2967, 14.0390, 1.0902 ppm respectively against 3 lessThan sup greaterThan rd lessThan /sup greaterThan instar larvae of lessThan i greaterThan Culex. quinquefasciatus lessThan /i greaterThan Say, 1823 ( lessThan i greaterThan Cx. quinquefasciatus lessThan /i greaterThan ) after 48 h of exposure. Ethyl acetate extract was applied again on 1 lessThan sup greaterThan st lessThan /sup greaterThan – 4 lessThan sup greaterThan th lessThan /sup greaterThan instars larvae of lessThan i greaterThan Cx. quinquefasciatus lessThan /i greaterThan at different concentrations for larvicidal bioassay and was noticed 100% mortality with very low concentrations for all instars larvae. No mortality was noticed on control treatments. Qualitative phytochemical analyses revealed the presence of several secondary metabolites. No adverse effect was observed on non target organisms to ethyl acetate and crude extracts upto 72 h of post exposure.
SUBRATA MALLICK AND GOUTAM CHANDRA
Annona reticulata, Culex quinquefasciatus, larvicide, non-target organisms, phytochemicals, stem bark extracts
1347-1356