Knock down efficacy of commercially available insecticides against Anopheles gambiae
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Date
2017Author
Makworo, Nicholas K.
Ochieng, Vincent O.
Ogoyi, Dorington O.
Mukabana, Richard W.
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
Knockdown efficacy of commercial aerosol insecticides against laboratory reared Anopheles gambiae
Kisumu strain mosquitoes and suppression of indoor resting density of A. gambiae complex mosquitoes in the
field were investigated in the study. Laboratory reared 2-5 days old female A. gambiae mosquitoes were
released into Peet-Grady chambers, sprayed with 0.3±0.1g of insecticides. Knock down rates were observed
for one hour and mortality rates after 24hrs of spraying. Field efficacy studies were carried out by spraying
houses with near uniform indoor resting densities of A. gambiae complex mosquitoes with aerosol
insecticides and mosquitoes collected. Morphological and molecular characterization of mosquitoes was
done. Probit analysis on knock down rates was carried out. Mortality rates and Mean indoor resting densities
were compared using ANOVA in SPSS version 16. The KT50 and KT95 of Kenyan Baygon®
and Kenyan raid®
differed significantly with the other insecticides. Nigerian Baygon®
achieved the lowest mortality rate of 87%
and differed significantly (P<0.05) with other insecticides. No significant differences in suppression of indoor
resting densities of A. gambiae complex mosquitoes was observed (p>0.05). Collected A. gambiae complex
mosquitoes corresponded to A. arabiensis. The low knock down values by Kenyan Baygon®
, Kenyan raid®
and the low mortality rate by Nigerian Baygon®
can be attributed to reduced efficacy rather than development
of resistance. Whether the low deterrence of Anopheles gambiae complex mosquitoes into houses is due to
development of pyrethroid insecticide resistance can be authenticated in another study
URI
https://www.jabonline.in/admin/php/uploads/197_pdf.pdfhttp://erepository.uonbi.ac.ke/handle/11295/107075
Citation
Makworo, Nicholas K., et al. "Knock down efficacy of commercially available insecticides against Anopheles gambiae." Journal of Applied Biology & Biotechnology Vol 5.02 (2017): 077-084.Publisher
University of Nairobi
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Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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