EFFECTS OF ENVIRONMENTAL-FACTORS ON MOLLUSCICIDAL ACTIVITIES OF SLOW-RELEASE HEXABUTYLDISTANNOXANE AND COPPER-SULFATE

  • 1 January 1976
    • journal article
    • research article
    • Vol. 54  (4) , 417-420
Abstract
Laboratory experiments [using Bulinus rohlfsi] were conducted to study the molluscicidal activities of slow-release hexabutyldistannoxane (TBTO) and CuSO4 under various environmental conditions. Organic materials such as mud and weeds reduced the molluscicidal efficacy of both chemicals. TBTO can be considered a good long-lasting molluscicide but, because of uncertainty as to its general toxic effects, it should not be used in field trials. The molluscicidal activity of slow-release CuSO4 was short-lived in plain lake water and was nil in the presence of mud or weeds at the concentration used. [These findings have relevance for the use of these molluscicides in controlling snail vectors of Schistosoma.].