| GEOGRAPHIC MEDICINE |
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| Year : 2010 | Volume
: 2
| Issue : 2 | Page : 116-120 |
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Field evaluation of the bio-efficacy of three pyrethroid based coils against wild populations of anthropophilic mosquitoes in Northern Tanzania
Shandala Msangi, Beda J Mwang'onde, Aneth M Mahande, Eliningaya J Kweka
Tropical Pesticides Research Institute, Division of Livestock and Human Disease Vector Control, P. O. Box 3024, Arusha, Tanzania
Correspondence Address:
Eliningaya J Kweka
Tropical Pesticides Research Institute, Division of Livestock and Human Disease Vector Control, P. O. Box 3024, Arusha
Tanzania
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0974-777X.62885
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Aims: This study aims to assess the feeding inhibition and repellency effect of three brands of mosquito coils in experimental huts (East African design). Evaluated products were all pyrethroid-based mosquito coils - Kiboko; , Total; and Risasi; . Mosfly (0.1% D-allethrin) was a positive control. Indoor resting behavior, feeding inhibition and induced exophily were measured as responses of burnt coil smoke in huts. Materials and methods: Resting mosquitoes were collected inside the huts, in window traps and verandah traps using mechanical aspirators. Identified to species level and sex. Results: A total of 1460 mosquitoes were collected, 58.9% (n=860) were Anopheles gambiae s.l while 41.1% (n=600) Culex quinquefasciatus. Indoor resting mosquitoes in all treated huts were significantly reduced than in negative control (DF=4, F=18.6, P < 0.001). Species found to rest indoors were not statistical different between the positive control (Mosfly coil) and other three treated huts (DF=3, F=1.068, P=0.408). Cx.quinquefasciatus had significantly higher induced exophily in all treatments comparing to An.gambiae s.l (DF=1, F=5.34, P=0.050). Comparison between species (An.gambiae s.l and Cx. quinquefasciatus) for the feeding inhibition among treated huts was not statistically significant (DF=1, F=0.062, P=0.810). Conclusion: Introduction of several personal protection measures will be ideal to supplement the existing gap in reducing the man vector contacts hence lowering the disease transmission. |
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