Bacillus sphaericus mosquito pathogens in the aquatic environment

Autor:	Allan A Yousten, Ernest F Benfield, Fred J Genthner
Jazyk:	angličtina
Rok vydání:	1995
Předmět:	Bacillus sphaericus Bacillus thuringiensis israelensis mosquito pathogenic bacteria bacterial spores Chironomus riparius Paragnetina media Pteronarcys proteus Tipula abdominalis biological control Microbiology QR1-502 Infectious and parasitic diseases RC109-216
Zdroj:	Memorias do Instituto Oswaldo Cruz, Vol 90, Iss 1, Pp 125-129 (1995)
Druh dokumentu:	article
ISSN:	0074-0276 1678-8060
DOI:	10.1590/S0074-02761995000100024
Popis:	The fate of Bacillus sphaericus spores in the aquatic environment was investigated by suspending spores in dialysis bags in fresh and seawater. Spore viability was lost more rapidly in seawater. Neither B. sphaericus nor B. thuringiensis israelensis (B.t.i.) spores mixed with pond sediment appeared to attach to the sediment. However, rapid decrease in B.t.i. toxicity suggested attachment of parasporal bodies to sediment. B. sphaericus toxin settled more slowly and less completely. B. sphaericus spores fed to larvae of four aquatic invertebrates were mostly eliminated from the animal gut in less than one week. An exception was the cranefly (Tipula abdominalis) where spores persisted in the posterior gut for up to five weeks.
Databáze:	Directory of Open Access Journals
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