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VOL. 11, ISSUE 2 (2026)
Larvicidal potency of selected botanical extracts on Culex quinquefasciatus (Diptera: Culicidae)
Authors
Sagata Mondal, Dwipsikha Das Bairagi, Nandita Naskar, Goutam Roy, Soumyajit Maji, Rohit Saha, Afrin Sultana
Abstract
The increasing need for environmentally safe and sustainable mosquito
control methods has led to growing interest in plant-based larvicides. This
study evaluated the larvicidal potential of extracts from Foeniculum vulgare
(fennel) and Brassica nigra (black mustard) against Culex quinquefasciatus
larvae. Plant materials were extracted using two solvents, benzene and water,
to assess the influence of solvent type on larvicidal activity. Larval
mortality was recorded after 24, 48, 72, and 96 hours of exposure at
concentrations of 50, 150, 250, 350, and 450 ppm. Among the tested extracts,
benzene extracts exhibited the highest larvicidal efficacy, resulting in
greater larval mortality than aqueous extracts. The findings highlight the
important role of solvent polarity in extracting bioactive compounds
responsible for larvicidal activity. Overall, the study suggests that locally
available plants such as F. vulgare and B. nigra possess
promising bioinsecticidal properties and could serve as eco-friendly
alternatives to synthetic chemical insecticides in mosquito vector management
programs.
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Pages:486-491
How to cite this article:
Sagata Mondal, Dwipsikha Das Bairagi, Nandita Naskar, Goutam Roy, Soumyajit Maji, Rohit Saha, Afrin Sultana "Larvicidal potency of selected botanical extracts on <i>Culex</i><i> quinquefasciatus</i> (Diptera: Culicidae)". International Journal of Entomology Research, Vol 11, Issue 2, 2026, Pages 486-491
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