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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 92, No. 6, 1997, pp. 745-754
Bioline Code: oc97140
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 92, No. 6, 1997, pp. 745-754

 pt Prevalencia de Anofelinos (Diptera: Culicidae) no crepusculo vespertino em areas da usina hidreletrica de Itaipu, no Municipio de Guaira, Estado do Parana, Brasil
Anthony Erico Guimaraes; Rubens Pinto de Mello; Catarina Macedo Lopes; Jeronimo Alencar & Carla Gentile

 
 en Prevalence of Anophelines (Diptera: Culicidae) during sunset in areas of the Itaipu hydroelectric usine in Guaira County, State of Parana, Brazil
Anthony Erico Guimaraes; Rubens Pinto de Mello; Catarina Macedo Lopes; Jeronimo Alencar & Carla Gentile

Abstract

Systematic collections of anophelines were conducted from November 1994 to
August 1995 from 18:00 to 20:00 hr using Shannon traps and human-bait along
the lake margin which forms the Itaipu Hydroelectric reservoir, State of
Parana, Brazil. Species prevalence was studied at 15 min intervals.
Anopheles albitarsis sensu latu and An. galvaoi, were the most frequently
collected mosquitoes. All Anopheles species populations peaked between
18:45 and 19:30 hr. The observations illustrate the existence of a
haematophagic activity cycle during the early evening hours: exogenous
stimulus (the beginning of sunset) --} Shannon trap (light attraction) --}
human bait (haematophagy) --} rest and digestion --} exogenous stimulus --}
Shannon trap or surrounding vegetation. The greater abundance of An.
albitarsis collected in human-bait and Shannon trap suggests it may be a
potential malaria vector in the region.

Keywords
haematophagic activity - Anophelines - hydroelectric usine - malaria - Parana - Brazil

 
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