The importance of Anopheles albitarsis E and An. darlingi in human malaria transmission in Boa Vista, state of Roraima, Brazil.
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.
Póvoa
Marinete Marins
MM
Instituto Evandro Chagas, Ananindeua, PA, Brasil.
de Souza
Raimundo Tadeu Lessa
RT
Lacerda
Raimundo Nonato da Luz
RN
Rosa
Edvaldo Santa
ES
Galiza
Deocleciano
D
de Souza
James Rodrigues
JR
Wirtz
Robert A
RA
Schlichting
Carl D
CD
Conn
Jan E
JE
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
D016054:DNA, Protozoan