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Volume 14, Number 10—October 2008


Deforestation and Vectorial Capacity of Anopheles gambiae Giles Mosquitoes in Malaria Transmission, Kenya

Yaw A. Afrane, Tom J. Little, Bernard W. Lawson, Andrew K. Githeko, and Eugenia LoComments to Author 
Author affiliations: Kenya Medical Research Institute, Kisumu, Kenya (Y.A. Afrane, A.K. Githeko); University of Edinburgh, Edinburgh, Scotland, UK (T.J. Little); Kwame Nkrumah University of Science and Technology, Kumasi, Ghana (Y.A. Afrane, B.W. Lawson); University of California, Irvine, California, USA (G. Yan);

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Table 1

Climatic conditions and Plasmodium falciparum infection in Anopheles gambiae mosquitoes fed infected blood meals according to site and land use type, western Kenyan highland and lowland*

Site Land use type Mean ± SD indoor temperature, °C Mean ± SD indoor relative humidity, % No. membrane feedings No. feedings resulting in infection Total no. mosquitoes dissected Range of infection rates,† %
Highland Forested 20.89 ± 0.39a 75.9 ± 1.8a 34 27 3,171 10.0–42.8
Highland Deforested 22.13 ± 0.27b 60.6 ± 2.1b 34 29 3,719 10.2–40.6
Lowland Deforested 23.90 ± 0.40c 64.7 ± 2.1b 21 19 1,749 11.0–42.4

*Superscript letters after values indicate results of Tukey-type multiple comparison tests. Values with the same superscript letter in the same column were not statistically significant (p = 0.05).
†Infection rate refers to proportion of dissected mosquitoes that were infected with P. falciparum oocysts or sporozoites.

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