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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Evaluation of leaf extracts of Vitex negundo L. (Family: Verbenaceae) against larvae of Culex tritaeniorhynchus and repellent activity on adult vector mosquitoes
Parasitology Research, Volume 103, No. 3, Year 2008
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Description
Petroleum ether (60-80°C) extracts of the leaves of Vitex negundo (Verbenaceae) were evaluated for larvicidal activity against larval stages of Culex tritaeniorhynchus in the laboratory. Larvae of C. tritaeniorhynchus were found more susceptible, with LC50 and LC90 values of 2.4883 and 5.1883 mg/l, respectively. Human volunteers wearing special terricot (68:32) fabrics, in the form of armbands, anklets, headbands, collar, and shoulder and pocket strips impregnated with V. negundo leaf extract were used, to test their repellent efficacy at two concentrations viz., 1.5 and 2.0 mg/cm2 under the field conditions. At 1.5-mg/cm2 concentration, more efficacies were found and 6-h complete protection against mosquito bites was provided. Complete protections for 8 h were found at 2.0 mg/cm2 against mosquitoes bites. These results clearly reveal that the V. negundo leaf extract served as a potential larvicidal agent against Japanese encephalitis vector C. tritaeniorhynchus and additionally acted as a promising repellent against various adult vector mosquitoes. © 2008 Springer-Verlag.
Authors & Co-Authors
Karunamoorthi, Kaliyaperumal
Ethiopia, Jimma
Jimma University
Ramanujam, Sayeenathan
India, Chidambaram
Annamalai University
Rathinasamy, Rajendran
India, Lucknow
Central Institute of Medicinal and Aromatic Plants India
Statistics
Citations: 123
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.1007/s00436-008-1005-5
ISSN:
09320113