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Estimates of Egyptian culcine longevity in nature altered by fluctuations in biting population density

Gad, A.M.; Feinsod, F.M.; el Said, S.M.

Journal of the Egyptian Society of Parasitology 19(1): 157-166

1989

ISSN/ISBN: 1110-0583
PMID: 2708852
Document Number: 338502
Estimates of vectorial capacity (VC) depend upon longevity of mosquito field populations, and expected longevity is estimated from the parity rate of the population. Seasonal variation in parity rates confound estimates of longevity which may not reflect actual population survival but are induced by changes in the rate of emergence of female mosquitoes. By comparing parity rates and biting activity in natural population of 2 Culicine mosquitoes, Culex pipiens and Cx. antennatus, we found that parity rate was low in the beginning of the season and high at the end. Parity rate appeared least affected during the weeks with maximal daily biting activity. We conclude that estimates of VC are most accurately determined for the two vector species studied when mosquito biting activity is maximal.

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