Dispersal and survival of Anopheles funestus and A. gambiae s.l. (Diptera: Culicidae) during the rainy season in southeast Tanzania

Bulletin of Entomological Research - Tập 88 Số 5 - Trang 561-566 - 1998
Willem Takken1, Jacques Derek Charlwood1, Brian D. Foy2, Gerrit Gort3
1Laboratory of Entomology, Wageningen Agricultural University, PO Box 8031, 6700 EH, Wageningen, The Netherlands
2Department of Zoology, University of Aberdeen, Tillydrone Avenue, AB24 2TZ, Scotland, UK
3Department of Mathematics, Wageningen Agricultural University, Dreijenlaan 4, 6703 HA Wageningen, The Netherlands

Tóm tắt

AbstractIn a rural area of southeastern Tanzania, studies were undertaken on the dispersal and survival of Anopheles funestus Giles and A. gambiae Giles s.l. during the rainy season. Blood fed, resting mosquitoes were collected indoors, marked with fluorescent powder and released on the same day from two different sites in the study area. For two weeks indoor resting mosquitoes were collected from 11 houses in the release area. Additional collections were made with a light trap from a sentinel house in the centre of the study area. Anopheles funestus was more abundant than A. gambiae s.l. Of 4262 A. funestus and 645 A. gambiae s.l. released, 4.3% and 7.4%, respectively, were recaptured. Dispersal of mosquitoes was not random: one of three areas was favoured significantly more than the other areas, as shown by the recapture and movement rates of marked mosquitoes. Based on the regression of the recapture rate, estimated daily survival rates of A. funestus and A. gambiae s.l. were 0.63 and 0.78, respectively. These were significantly different. The differences in dispersal and survival rates between the two species are discussed in view of local topography and species-specific characteristics.

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Thông tin xuất bản

Bulletin of Entomological Research

Tập 88 Số 5

561-566

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