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Bacillus sphaericus mosquito pathogens in the aquatic environment
Yousten, Allan A; Benfield, Ernest F; Genthner, Fred J.
  • Yousten, Allan A; Virginia Polytechnic Institute and State University. Biology Department. US
  • Benfield, Ernest F; Virginia Polytechnic Institute and State University. Biology Department. US
  • Genthner, Fred J; Virginia Polytechnic Institute and State University. Biology Department. US
Mem. Inst. Oswaldo Cruz ; 90(1): 125-129, Jan.-Feb. 1995.
Artigo em Inglês | LILACS | ID: lil-319919
ABSTRACT
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.
Assuntos
Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Bacillus / Controle de Mosquitos / Culicidae Limite: Animais Idioma: Inglês Revista: Mem. Inst. Oswaldo Cruz Assunto da revista: Medicina Tropical / Parasitologia Ano de publicação: 1995 Tipo de documento: Artigo País de afiliação: Estados Unidos Instituição/País de afiliação: Virginia Polytechnic Institute and State University/US

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Bacillus / Controle de Mosquitos / Culicidae Limite: Animais Idioma: Inglês Revista: Mem. Inst. Oswaldo Cruz Assunto da revista: Medicina Tropical / Parasitologia Ano de publicação: 1995 Tipo de documento: Artigo País de afiliação: Estados Unidos Instituição/País de afiliação: Virginia Polytechnic Institute and State University/US