High prevalence of bacterial spore-formers active against mosquito larvae in temporary monsoon flooded sites in Orissa, India
Autor(es): Rout, Regalin; Raina, Vishakha; Suar, Mrutyunjay; Luethy, Peter
Resumo: Different ecosystems were probed in the vicinity of the city of Bhubaneswar in the Indian state of Orissa for the presence of bacterial spore-formers with activity against mosquito larvae. The most productive sites were places that were flooded during the monsoon season, including roadside ditches and shorelines of ponds. Among 630 isolates screened, 44 (7%%) showed larvicidal activity against larvae of Aedes aegypti. The specific activity of the bacterial spore-formers varied greatly. Isolates were found with specific activities superior to the Bacillus thuringiensis israelensis reference strain of the Pasteur Institute. All mosquitocidal strains produced crystal proteins, and based on the biochemical analyses could be classified into the species B. thuringiensis. Such strains possess the potential for the development of new microbial products for mosquito control in India.
Palavras-Chave: Biological control; Biochemical analysis; Pest control; Larval development; Strains; Aquatic insects; Ponds; Public health; Monsoons; crystal proteins; Roadsides; Sites; Ecosystems; Microorganisms; Larvae; Proteins; Ditches; Crystals; Strain; Bacillus thuringiensis israelensis; Aedes aegypti
Imprenta: Journal of the American Mosquito Control Association, v. 27, n. 2, p. 159-161, 2011.
Descritores: Aedes aegypti - Proteins ; Aedes aegypti - Public health
Data de publicação: 2011
