Adulticidal activity of Pithecellobium dulce (Roxb.) Benth. against Culex quinquefasciatus (Say)
- Publisher: Asian Pacific Journal of Tropical Disease Editorial Office
Asian Pacific Journal of Tropical Disease
(issn: 2222-1808, eissn: 2222-1808)
R | RC955-962 | Culex quinquefasciatus | Filariasis | Adulticidal activity | Pithecellobium dulce | Medicine | Arctic medicine. Tropical medicine | Leaf and seed | Mosquito
mesheuropmc: fungi | parasitic diseases
Objective: To determine the adulticidal efficacy of different solvent leaf and seed extracts of
Pithecellobium dulce (P. dulce) against Culex quinquefasciatus (Cx. quinquefasciatus). Methods:
Sucrose-fed and blood starved mosquitoes were released into the tube, and the mortality effects
of the extracts were observed every 10 min for 3 h exposure period. At the end of 1, 2, and 3 h
exposure periods, the mosquitoes were placed in the holding tube. Cotton pads soaked in 10%
sugar solution with vitamin B complex were placed in the tube during the holding period of 24 h.
Mortality of the mosquitoes was recorded after 24 h. Results: Among five solvent extracts tested,
the maximum efficacy was observed in the methanol extract of leaves of P. dulce. The LC50 and
90 values of P. dulce leaves and seeds against Cx. quinquefasciatus were 234.97, 309.24 ppm and
464.86, 570.80 ppm, respectively. No mortality was observed in controls. The Chi-square values
were significant at P<0.05 level. Conclusions: From the results it can be concluded that the
crude extract of P. dulce has excellent potential for controlling filariasis vector mosquito, Cx.
quinquefasciatus. This is the first report on the mosquito adulticidal activity of the reported P.
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