title: The importance of Anopheles albitarsis E and An. darlingi in human malaria transmission in Boa Vista, state of Roraima, Brazil.
abstract: In several districts of Boa Vista, state of Roraima, Brazil we found Anopheles (Nyssorhynchus) albitarsis E to be the primary vector of human malaria parasites, and during 2001-2002 it was significantly more abundant than An. darlingi (p < 0.001). Other species sampled were An. (Nys.) braziliensis, An. (Ano.) peryassui, An. (Nys.) nuneztovari, An. (Nys.) oswaldoi s.l., and An. (Nys.) triannulatus. As determined by the ELISA technique An. darlingi had a higher overall infection rate (2.1%) compared with An. albitarsis E (1.2%). However a marginally higher proportion of An. albitarsis E was infected with Plasmodium vivax compared with An. darlingi, and the An. albitarsis E biting index was also much higher These results suggest the importance of An. albitarsis E in malaria transmission in a savannah ecoregion of northern Amazonian Brazil, and reconfirm the importance of An. darlingi even if at lower abundance.
authors.affiliation: Instituto Evandro Chagas, Ananindeua, PA, Brasil.
authors.forename: Marinete Marins
authors.initials: MM
authors.lastname: Póvoa
authors.forename: Raimundo Tadeu Lessa
authors.initials: RT
authors.lastname: de Souza
authors.forename: Raimundo Nonato da Luz
authors.initials: RN
authors.lastname: Lacerda
authors.forename: Edvaldo Santa
authors.initials: ES
authors.lastname: Rosa
authors.forename: Deocleciano
authors.initials: D
authors.lastname: Galiza
authors.forename: James Rodrigues
authors.initials: JR
authors.lastname: de Souza
authors.forename: Robert A
authors.initials: RA
authors.lastname: Wirtz
authors.forename: Carl D
authors.initials: CD
authors.lastname: Schlichting
authors.forename: Jan E
authors.initials: JE
authors.lastname: Conn
mesh_terms: D000818:Animals; D000852:Anopheles / Q000145:classification / Q000469:parasitology*; D001938:Brazil; D016054:DNA, Protozoan / Q000032:analysis*; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D007303:Insect Vectors / Q000469:parasitology*; D008288:Malaria / Q000469:parasitology / Q000635:transmission*; D010961:Plasmodium / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D012621:Seasons
chemical_list: D016054:DNA, Protozoan