Prevalência de Anofelinos (Diptera: Culicidae) no Crepúsculo Vespertino em Áreas da Usina Hidrelétrica de Itaipu, no Município de Guaíra, Estado do Paraná, Brasil

• Main Authors: Anthony Érico Guimarães, Rubens Pinto de Mello, Catarina Macedo Lopes, Jeronimo Alencar, Carla Gentile
• Format: Article
• Language: English
• Published: Instituto Oswaldo Cruz, Ministério da Saúde 1997-11-01
• Series: Memórias do Instituto Oswaldo Cruz.
• Subjects: Paraná; haematophagic activity; Anophelines; hydroelectric usine; malaria; Brazil
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761997000600004
• ISSN: 0074-0276; 1678-8060

<abstract language="eng">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 Paraná, 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