Germination of Bacillus thuringiensis var. israelensis spores in the gut of Aedes larvae (Diptera: Culicidae)
Autor(es): Aly, C.
Resumo: In laboratory experiments, germination and growth of B. thuringiensis israelensis in the gut of Aedes aegypti and A. vexans larvae (Culicidae: Diptera) was observed. The number of spores and vegetative cells in the gut of living larvae and in cadavers was estimated by plating homogenized larvae on selective agar plates. The number of spores per gut increased in the first 40-140 min of exposure to a maximum, and decreased in the subsequent time, demonstrating spore germination in living larvae, moribunds, and in cadavers. Twenty-four hours after the death of the larvae, a minimal amount of spores, but an increased number of vegetative cells, was found in cadavers. In A. aegypti larvae, germination and growth of B. thuringiensis israelensis in the larval gut was photographically documented.
Palavras-Chave: Bacillus thuringiensis israelensis; Aedes aegypti; Aedes vexans; Bacterial germination
Imprenta: Journal of Invertebrate Pathology, v. 45, n. 1, p. 1-8, 1985.
Descritores: Aedes aegypti - Cell
Data de publicação: 1985
