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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/21332


Title: Biting indices, host-seeking activity and natural infection rates of anopheline species in Boa Vista, Roraima, Brazil from 1996 to 1998
Authors: Silva-Vasconcelos, Adenildo da
Kató, Márcio Yukió Neves
Mourão, Eliana Neves
Lessa de Souza, Raimundo Tadeu
Lacerda, Raimundo Nonato da Luz
Sibajev, Alexander
Tsouris, Pantelis
Póvoa, Marinete Marins
Momen, Hooman
Rosa-Freitas, Maria Goreti
Keywords: Anopheles - biting index - infection rates - malaria - Roraima - Brazil
Issue Date: 31-Dec-2002
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 97 Num 2
Abstract: The epidemiology of the transmission of malaria parasites varies ecologically. To observe some entomological aspects of the malaria transmission in an urban environment, a longitudinal survey of anopheline fauna was performed in Boa Vista, Roraima, Brazil. A total of 7,263 anophelines was collected in human bait at 13 de Setembro and Caranã districts: Anopheles albitarsis sensu lato   (82.8%), An. darlingi (10.3%), An. braziliensis (5.5%), An. peryassui (0.9%) and An. nuneztovari (0.5%). Nightly 12 h collections showed that An. albitarsis was actively biting throughout the night with peak activities at sunset and at midnight. An. darlingi bit during all night and did not demonstrate a defined biting peak. Highest biting indices, entomological inoculation rates and malaria cases were observed seasonally during the rainy season (April-November). Hourly collections showed host seek activity for all mosquitoes peaked during the first hour after sunset. An. darlingi showed the highest plasmodial malaria infection rate followed by An. albitarsis, An. braziliensis and An. nuneztovari (8.5%, 4.6%, 3% and 2.6%, respectively). An. albitarsis was the most frequently collected anopheline, presented the highest biting index and it was the second most frequently collected infected species infected with malaria parasites. An. albitarsis and An. darlingi respectively, are the primary vectors of malaria throughout Boa Vista.
URI: http://hdl.handle.net/1807/21332
Other Identifiers: http://www.bioline.org.br/abstract?id=oc02029
Rights: Copyright 2002 - Instituto Oswaldo Cruz - Fiocruz
Appears in Collections:Bioline International Legacy Collection

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