Short Communication

Vorticella sp: Prospective Mosquito Biocontrol Agent

Abstract

Background: Considering the disadvantages of chemical insecticides, we aimed to evaluate Vorticella parasites for control of mosquito larvae of Anopheles stephensi and Aedes aegypti at different larval stages.
Methods: Vorticella sp infected mosquito larvae were crushed in the 0.85% saline and homogenized well to get Vorti­cella in suspension. The effects of Vorticella sp infections on larval development were investigated by inoculat­ing protozoan on different larval instars of An. stephensi and Ae. aegypti and observed under light microscope. Le­thal time of the Vorticella infected larvae at different stages was calculated.
Results: First and 2nd larval instars of both An. stephensi and Ae. aegypti did not show signs of infection by Vorti­cella sp., whereas 3rd instars of An. stephensi showed more Vorticella infection than those of Ae. aegypti. However, 4th larval instars of both mosquitoes were heavily infected with Vorticella parasite which was responsible for slug­gish movements of larvae and eventually death. Moreover, parasites (Vorticella spp) were responsible for more than 90% reduction in adult emergence for both infected An. stephensi and Ae. aegypti.
Conclusion: This study provides insights for mosquito larvicidal action of surface parasite Vorticella on different larval stages of An. stephensi and Ae. Aegypti. It could be suggested as a potential candidate in mosquito biocontrol programs.

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IssueVol 10 No 4 (2016) QRcode
SectionShort Communication
Keywords
Anopheles stephensi Aedes aegypti Vorticella Biocontrol
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How to Cite
1.
Patil CD, Narkhede CP, Suryawanshi RK, Patil SV. Vorticella sp: Prospective Mosquito Biocontrol Agent. J Arthropod Borne Dis. 2016;10(4):602-608.