Use este identificador para citar ou linkar para este item: http://repositorio.inpa.gov.br/handle/123/2334
Título: Analysis of toxicity on Bacillus sphaericus from amazonian soils to Anopheles darlingi and Culex quinquefasciatus larvae
Autor(es): Eleilza de Castro Litaiff
Wanderli Pedro Tadei
Ila Maria de Aguiar Oliveira
Jorge Ivan Rebelo Porto
Assunto: Bacillus
Amazônia
Bioinseticida
ISSN: 0044-5967
Revista: Acta Amazonica
Volume: 38
Resumo: Bioassays under laboratory conditions aiming to determine the larvicidal activity of Bacillus sphaericus were carried out on Anopheles darlingi and Culex quinquefasciatus. In order to estimate the toxicity through median lethal concentration (LC50) and the relative potency of the strains to B. sphaericus standard strain 2362, probit analysis was performed utilizing the POLO-PC program. The findings of LC50 pointed out high effectiveness on strains IB15 (0.040 ppm), IB19 and S1116 (0.048 ppm), IB 16 (0-052 ppm) and S265 (0.057 ppm). Strain IB 15 presented nearly 50% more potency than strain 2362 in bioassays conducted on A. darlingi. It was observed that IB 16 and S1116 strains were the most powerful against C quinquefasciatus, showing to be about 300-400% stronger than 2362 strain. The results show that laboratory conditioned evaluation call be all important way to select promising bacteria with entomopathogenic action on biolarvicides production for use on mosquitoes breeding sites.
URI: http://repositorio.inpa.gov.br/handle/123/2334
ISSN: 0044-5967
DOI: https://dx.doi.org/10.1590/S0044-59672008000200008
Aparece nas coleções:Coordenação de Biodiversidade (CBIO)

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