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VOL. 6, ISSUE 4 (2021)
Mosquito larvicidal potential of Piper longum L. leaf extract and fractions
Authors
N R Padma Priya, R D Stevens Jones
Abstract
To evaluate the larvicidal efficacy of crude and fractionated extracts of Piper longum leaf against Aedes aegypti, and Culex quinquefasciatus mosquitoes. The larvicidal activity was carried out by World Health Organization protocols. The larvicidal activity was exposed to various concentrations of P. longum crude and three fractionated extracts (CC-CE- 4, 6, 8) against third instar mosquitoes. The mortality of larvae was observed after 24 and 48h of exposure. Probit analysis was done for LC50 and LC90 values. The crude extract has 24 and 48h LC50 and LC90 values for Ae.aegypti 28.08; 48.39, 23.51; 44.56 µg/dl, and Cx. quinquefasciatus has values 33.32; 58.64, 26.58; 52.72 µg/dl respectively. The three fractionated extracts have values for Ae. aegypti 17.72; 29.80, 13.52; 23.23 µg/dl, 15.01; 27.02, 12.44; 23.77 µg/dl, 12; 25, 47, 9; 21.02 µg/dl, and for Cx. quinquefasciatus 19.30; 37.40, 15.36; 29.69 µg/dl, and 18.96; 36.74, 15.06; 28.6 µg/dl, and 15.98;35.21, 12; 28 and 18.96; 36.74, 15.06; 28.6 µg/dl respectively. The fractionated extracts are effective than crude extract against the third instar larvae of mosquitoes. Further studies to determine the active components of effective extracts.
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Pages:193-196
How to cite this article:
N R Padma Priya, R D Stevens Jones "Mosquito larvicidal potential of <em>Piper longum</em> L. leaf extract and fractions ". International Journal of Entomology Research, Vol 6, Issue 4, 2021, Pages 193-196
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