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Proceedings of the International Academy of Ecology and Environmental Sciences, 2012, 2(2): 90-95
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Article

Biolarvicidal activity of Peanibacillus macerans and Bacillus subtilis isolated from the dead larvae against Aedes aegypti - Vector for Chikungunya

A. Ramathilaga, A.G. Murugesan , C. Sathesh. Prabu
Manonmaniam Sundaranar University, Sri Paramakalyani Centre of Excellence Environmental Sciences, Alwarkurichi-627412, Tamil Nadu, India

Received 15 November 2011;Accepted 20 December 2011;Published online 5 June 2012
IAEES

Abstract
Two bacterial species were isolated from dead mosquito larvae. They were identified as Peanibacillus macerans and Bacillus Subtilis. They were examined for their mosquito larvicidal activity against chikunguya vector Aedes aegypti (Diptera: Culucidae). The LC50 values of P. macerans and B. subtilis were recorded 70.99, 50*106 cells /ml and 58.97, 49*106 cells /ml for 24h and 48h, respectively. The LC50 value of the procured culture Bacillus thuringiensis subsp israelensis also detected. It was noted as 152.02 and 50*106 cells /ml for 24hrs and 48hrs. A. aegypti was the most susceptible to B. subtilis. It has the highest relative susceptibility (RS) value.

Keywords biocontrol;Chikunguya;Aedes aegypti;Peanibacillus macerans;Bacillus subtilis;Bacillus thuringiensis subsp israelensis.


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