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Adult lifespan and reproductive status of Culicoides species (Diptera: Cerato-pogonidae) in Kenya, with reference to virus transmission

Published online by Cambridge University Press:  10 July 2009

Alan R. Walker
Alan R. Walker
Affiliation:
Veterinary Research Laboratory, P.O. Kabete, Kenya
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Abstract

Light-traps were used to sample populations of C. comutus De Meillon, C. pallidipennis G, I. & M. and C. schultzei (End.) gp. at sites at Embakasi, Kiboko and Makindu between 1971 and 1975. The samples were graded into age-groups by the degree of abdominal pigmentation, estimates of calendar ageing were made, and the seasonal variation in age-structure of the populations was recorded. Survival rates were calculated on the basis of a graphical model of the continually overlapping generations, and the survival rate of 0·8 was found typical. This rate is considered sufficiently high for C. cornutus, C. pallidipennis and C. schultzei gp. to act as vectors of bluetongue virus disease of sheep and/or ephemeral fever virus disease of cattle.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 67 , Issue 2 , June 1977 , pp. 205 - 215
Copyright
Copyright © Cambridge University Press 1977

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