Abstract

A survey of urban Dar-es-Salaam, on the east coast of Tanzania, in June and July 1968 revealed that the most abundant species breeding was a dark-scaled form of Aedes aegypti taken 93 times (72% of all species recorded), 68 times from old tins. In a survey of breeding in 17 coastal or inland villages, all within 80 km of Dar-es-Salaam, A. aegypti and A. simpsoni were the most abundant species, making up 50% of the total records. Culex and Eretmapodites species made up 20 and 10% of the records respectively. Domestic water pots, tins and pineapple axils made up 65% of potential habitats. A. aegypti was commonest in pots. Only 2 A. aegypti were taken biting man in two 48-hr catches and it is considered that while A. aegypri transmitted yellow fever would be unlikely, the species could be involved in a non-human arbovirus cycle.

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