A Census of the Tsetse-fly Glossina pallidipes Austen and of its Host Animals

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Abstract
The tsetse population of Nzalagobe near Lake Victoria was 5000 Glossina palpalis and 50,000 G. pallidipes. The population of probable hosts was 43, of which the commonest were bushpig, 15, and bushbuck, 13. Thus every animal, on the avg., supported 1163 G. pallidipes. It is considered probable that G. pallidipes would, under the local conditions, feed every 4 days, so that each animal on the average must feed 291 G. pallidipes a day, or 2 every 5 min. assuming steady feeding throughout a 12-hr. day. G. pallidipes takes up about 60 mg. of blood/feed, so that each animal loses 291 x 60 mg., or 17.5 g. of blood/day to the tsetses.

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