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The influence of accumulated rainfall and its pattern on mosquito (Diptera) populations in Brazil

Published online by Cambridge University Press:  10 July 2009

H. A. M. de Kruijf ,
J. P. Woodall  and
A. T. Tang
H. A. M. de Kruijf
Affiliation:
Caribbean Marine Biological Institute, P.O. Box 2090, Curacao, Netherlands Antilles and Belém Virus Laboratory of the Instituto Evandro Chagas, Belém, Pará, Brazil
J. P. Woodall
Affiliation:
Caribbean Marine Biological Institute, P.O. Box 2090, Curacao, Netherlands Antilles and Belém Virus Laboratory of the Instituto Evandro Chagas, Belém, Pará, Brazil
A. T. Tang
Affiliation:
Caribbean Marine Biological Institute, P.O. Box 2090, Curacao, Netherlands Antilles and Belém Virus Laboratory of the Instituto Evandro Chagas, Belém, Pará, Brazil
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Abstract

Weekly catches of five species of mosquitoes over nearly two years at Belém, Brazil, were plotted against accumulated rainfall during the four weeks before catching. Rain-pool-breeding species (Aedes serratus (Theo.), A. scapularis (Rond.), Psorophora ferox (Humb.)) show a marked peak in catch size (population density) at 100–180 mm accumulated rainfall; one swamp-breeding species (Culex portesi Senevet & Abonnenc) shows no relation to rainfall while another (C. taeniopus D. & K.) reaches a plateau at 180 mm. A more detailed analysis of catches in relation to rainfall distribution showed that maximal populations of A. serratus appear 16 days after 39.7–87.9 mm of rainfall has accumulated over 14 consecutive days, which should include 3–7 dry days; P. ferox requires 55.2–99.4 mm rainfall in the same period; and A. scapularis requires 26.5–114.9 mm rainfall, with a marked alternation of wet and dry days.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 63 , Issue 2 , December 1973 , pp. 327 - 333
Copyright
Copyright © Cambridge University Press 1973

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