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1 September 2009 Effect of Repeated Application of Microbial Larvicides on Malaria Transmission in Central Côte d'Ivoire
Emile S. Tchicaya, Benjamin G. Koudou, Jennifer Keiser, Akré M. Adja, Gueladio Cissé, Marcel Tanner, Yao Tano, Jürg Utzinger
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Abstract

The effect of repeated applications of Bacillus thuringiensis var israeliensis (Bti) and B. sphaericus (Bs) on different entomologic parameters of malaria transmission was investigated in a village in central Côte d'Ivoire. The study area was monitored for potential mosquito breeding sites over a 7-month period. Microbial larvicides were applied once every 3 wk; first Bti (0.8 mg/liter), followed by Bs (10 mg/liter) 3–4 days later. Adult mosquitoes were collected inside and outside sentinel houses in 4 cross-sectional surveys using human landing catch. Repeated applications of Bti and Bs showed a decline in the biting rate of both Anopheles funestus and Anopheles gambiae. Moreover, the entomologic inoculation rate of An. funestus was significantly reduced (from 328 to 142, P  =  0.005), whereas that of An. gambiae remained stable. In conclusion, microbial larvicides might play a role in an integrated approach for malaria control.

Emile S. Tchicaya, Benjamin G. Koudou, Jennifer Keiser, Akré M. Adja, Gueladio Cissé, Marcel Tanner, Yao Tano, and Jürg Utzinger "Effect of Repeated Application of Microbial Larvicides on Malaria Transmission in Central Côte d'Ivoire," Journal of the American Mosquito Control Association 25(3), 382-385, (1 September 2009). https://doi.org/10.2987/08-5809.1
Published: 1 September 2009
JOURNAL ARTICLE
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