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Laboratory study of the influence of water temperature and pH on Bacillus thuringiensis var. israelensis efficacy against black fly larvae (Diptera: Simuliidae)
1988 (English)In: Journal of the American Mosquito Control Association, ISSN 8756-971X, Vol. 4, no 1, 64-72 p.Article in journal (Refereed) Published
Abstract [en]

An experimental formulation of Bacillus thuringiensis var. israelensis was used in the laboratory to assess the influence of water temperature and pH on the relationship between concentration, duration of exposure, and mortality of the northern black fly species Simulium decorum and Prosimulium mixtum/fuscum group. Mortality increases in both species with increases in duration of exposure, concentration, temperature and pH. Onset of death is shortened by increase in concentration and temperature. As temperature rises, the concentration of B. t. i required to induce mortality decreases; the sharpest decline occurring between 12 and 18 degree C for S. decorum , and between 4 and 8 degree C for P. mixtum/fuscum larvae. Lower pH induces a loss of efficacy of the B. t. i. formulation on S. decorum larvae at 4 and 12 degree C.

Place, publisher, year, edition, pages
1988. Vol. 4, no 1, 64-72 p.
National Category
Microbiology
Identifiers
URN: urn:nbn:se:hkr:diva-12706ISI: A1988Q184800013OAI: oai:DiVA.org:hkr-12706DiVA: diva2:741983
Available from: 2014-08-29 Created: 2014-08-22 Last updated: 2015-05-12Bibliographically approved

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Lacoursière, Jean O.
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