Algae in mosquito breeding sites and the effectiveness of the mosquito larvicide Bacillus thuringiensis H-14 |
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| Authors: | A Abdel-Hameed J Kiviranta K Sivonen S Niemelä G Carlberg |
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| Institution: | (1) Department of Microbiology, University of Helsinki, SF-00710 Helsinki, Finland;(2) Department of Pharmacy, University of Helsinki, SF-00170, Helsinki, Finland |
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| Abstract: | The presence of cyanobacteria generally decreased the effectiveness of Bacillus thuringiensis H-14 (BTI) as a mosquito larvicide. The effect was more pronounced when the mosquito larvae were exposed to BTI in the presence of several cyanobacterial strains. No synergistic or antagonistic effect between the  -endotoxin from BTI and the hepatotoxin from cyanobacteria was seen. Neurotoxic cyanobacterial strains caused very fast paralysis in mosquito larvae; the decreases in the effectiveness of BTI when tested in combination with a neurotoxic strain might be due to the effect of this paralytic action on the feeding rate of the mosquito larvae. |
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| Keywords: | Bacillus thuringiensis H-14 cyanobacteria  -endotoxin" target="_blank">gif" alt="delta" align="BASELINE" BORDER="0">-endotoxin hepatotoxin mosquitoes neurotoxin |
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