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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/748

Title: Larvicidal and repellent actions of Dalbergia sissoo Roxb. (F. Leguminosae) oil against mosquitoes
Authors: Ansari, M A
Razdan, R K
Tandon, Mamta
Vasudevan, Padma
Keywords: Dalbergia sissoo oil
Anopheles stephensi
Aedes aegypti
Culex quinquefasciatus
Issue Date: 2000
Citation: Bioresource Technology, 73(3), 207-211
Abstract: Studies were carried out to evaluate the larvicidal, growth inhibitor and repellent actions of D. sissoo oil against Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus under laboratory conditions. Pure oil was applied at 0.4-5 ml/m2 on a water surface. This showed that larvicidal activity was directly proportional to dosages. One hundred percent mortality of Cx. quinquefasciatus immatures was observed within 24 h at 4 ml/m2, followed by Ae. aegypti (90%) and An. stephensi (60%), and pupation was totally inhibited. Adults which emerged from exposure to a sublethal dosage (2 ml/m2) either did not lay eggs (Ae. aegypti) or hatch (Cx. quinquefasciatus and An. stephensi). The oil also showed strong repellent action when 1 ml oil was applied on exposed parts of human volunteers. They were protected from mosquito bites for 8-11 h. The protection (91:6 + 2%) obtained with sissoo oil was comparable to that with commercial Mylol oil (93:8 + 1:2%) consisting of di-butyl and dimethyl phthalates.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/748
Appears in Collections:Centre for Rural Development and Technology [CRDT]

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