The role of cattle as hosts of Glossina longipennis at Galana Ranch, south-eastern Kenya
1996
Makumi, J.N. | Green, C.H. | Baylis, M.
Glossina longipennis were recorded visiting and engorging on cattle in an enclosure and on a single ox in a crush using transparent electrocuting nets in an incomplete ring. Of the total flies caught, 3-6% of males and 5-6% of females in the total catches were engorged (a feeding success rate of up to 16.6% and 12.6%, respectively, depending on assumptions made about the proportion which had an opportunity to feed). Direct observation of tsetse from an observation pit showed 57% landing on the front legs, 13% on the hind legs, and 11% on the belly of the host. The largest number of bloodmeals was taken from the front legs, although only 14% of landings there terminated in feeding; a higher proportion of the flies alighting on the hind legs and flank succeeded in feeding (28% and 21% respectively). Glossina longipennis were attracted to targets baited with ox odour from an underground pit in a dose-dependent manner. Odour of humans was much less attractive to G. longipennis than that of oxen (for equivalent biomass). Analysis of bloodmeal samples from tsetse caught in two sites on the ranch showed that G. longipennis preferentially feeds on suids, bovids and hippopotamus.
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