Estimating dispersal and survival of Anopheles gambiae and Anopheles funestus along the Kenyan coast by using mark-release-recapture methods.
Mark-release-recapture (MRR) experiments were conducted with emerging Anopheles gambiae s.l. and Anophelesfunestus Giles at Jaribuni and Mtepeni in Kilifi, along the Kenyan Coast. Of 739 and 1246 Anopheles released at Jaribuni and Mtepeni, 24.6 and 4.33% were recaptured, respectively. The daily survival probability was 0.96 for An. funestus and 0.95 for An. gambiae in Jaribuni and 0.83 and 0.95, respectively, in Mtepeni. The maximum flight distance recorded was 661 m. The high survival probability of An. gambiae and An. funestus estimated accounts for the continuous transmission of malaria along the Kenyan coast. This study also shows that the release of young, emergent female Anopheles improves the recapture rates and may be a better approach to MRR studies.
Midega
Janet T
JT
Department of Entomology, Kenya Medical Research Institute, Centre for Geographic Medicine Research-Coast, P.O. Box 428, Kilifi, Kenya. jmidega@kilifi.kemri-wellcome.org
Mbogo
Charles M
CM
Mwnambi
Henry
H
Wilson
Michael D
MD
Ojwang
Gordon
G
Mwangangi
Joseph M
JM
Nzovu
Joseph G
JG
Githure
John I
JI
Yan
Guiyun
G
Beier
John C
JC
D000818:Animals; D000852:Anopheles / Q000502:physiology*; D005260:Female; D007630:Kenya; D007814:Larva; D008136:Longevity; D011157:Population Dynamics; D013997:Time Factors