Differential larvicidal efficacy of four species of Vitex against Culex quinquefasciatus larvae

• Published in: Parasitology research (1987) Vol. 101; no. 6; pp. 1721 - 1723
• Main Authors: Kannathasan, Krishnan, Senthilkumar, Annadurai, Chandrasekaran, Manivachagam, Venkatesalu, Venugopalan
• Format: Journal Article
• Language: English
• Published: Berlin Berlin/Heidelberg : Springer-Verlag 01.11.2007; Springer
• Subjects: Animals; Biological and medical sciences; Culex - drug effects; Culex - growth & development; Culex quinquefasciatus; Fundamental and applied biological sciences. Psychology; General aspects; General aspects and techniques. Study of several systematic groups. Models; Insecticides - pharmacology; Invertebrates; Larva - drug effects; Plant Extracts - pharmacology; Plant Leaves - chemistry; Vitex; Vitex - chemistry; Vitex - classification; Vitex altissima; Vitex negundo; Vitex trifolia; Larva; Arthropoda; Insecta; Culicidae; Parasite; Invertebrata; Diptera; Culex quinquefasciatus
• ISSN: 0932-0113; 1432-1955
• DOI: 10.1007/s00436-007-0714-5

The early fourth instar larvae of Culex quinquefasciatus, reared in the laboratory were used for larvicidal assay with leaf extracts of Vitex negundo, Vitex trifolia, Vitex peduncularis and Vitex altissima. The methanol extracts of the four species possessed varying levels of larvicidal nature. The highest larvicidal activity was found with the extract of V. trifolia (LC₅₀ = 41.41 ppm) followed by V. peduncularis (LC₅₀ = 76.28 ppm), V. altissima (LC₅₀ = 128.04 ppm) and V. negundo (LC₅₀ = 212.57 ppm).