Understanding on the chemical ecology of mosquito behavior is of paramount importance in developing control programs employing attractants and repellents, Several workers focused on topical repellents and oviposition attractants of mosquitoes, however, only limited work has been accomplished on mosquito oviposition repellents, The present systematic investigation provides evidence on the effectiveness of a C21 fatty acid ester- hexadecyl pentanoate, to stimulate antennal olfactory receptors of Aedes aegypti (L.), Ae. albopictus (Skuse), and Anopheles stephensi (Liston) that mediate their long-range olfaction guided flight orientation behavior by repelling the gravid females of these mosquito vectors in the olfactometer. The compound loaded onto an effervescent tablet retained its repellent property in the treated substrates for up to 1 wk at 10 mg/L. In places, where the mosquito breeding habitats are near to human habitations, could be treated with hexadecyl pentanoate to repel the ovipositing gravid females as a component of the integrated approach for mosquito management by disrupting the mosquito life cycle and population growth.
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