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Infection levels of Coelomomyces indicus Iyengar in larvae of Anopheles gambiae Giles, as related to the copepod fauna in breeding sites at the Kenya Coast
D. M. Sabwa, W. A. Otieno, M. O. Odindo
Journal:

Insect Science and Its Application / Volume 8 / Issue 1 / February 1987

Published online by Cambridge University Press:

19 September 2011, pp. 29-32

Print publication:

February 1987
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An ecological study was conducted in two pools, one temporary and one semi-permanent at the Kenya coast to determine the relationship between infection levels of Coelomomyces indicus Iyengar in larvae of Anopheles gambiae Giles, and the species and density of copepods found in these sites. Microcyclops minutus Claus, an intermediate host of Coelomomyces indicus, was the predominant species in both pools. Other species were, Mesocyclops leuckarti Claus, Mesocyclops leuckarti pilosa Kiefer, and Mesocyclops (Thermocyclops) decipiens Kiefer. Infections occurred during the periods when M. minutus densities were above 12 cyclops per 250 ml of water. A positive relationship was shown between M. minutus density and infection levels in An. gambiae with C. indicus. The r-value for this relationship in the temporary pool was 0.726, and in the semi-permanent pool, 0.639.