title: Genetic differences among Anopheles vestitipennis subpopulations collected using different methods in Chiapas state, southern México.
abstract: Biting activity and population genetic studies of the malaria vector Anopheles vestitipennis were conducted in southern México. Three subpopulations were collected from 2 villages; 2 subpopulations were from the same village, one on human bait and one with an animal-baited trap; the third was collected from a cattle corral in the 2nd village (280 km away SSE). The anthropophilic subpopulation had steady activity with 61% of bites occurring before midnight, significantly different from those of the 2 zoophilic subpopulations, which had 78-82% of bites before midnight and 2 biting peaks, one at 1900-2100 h and the other at 0400-0500 h. Isozyme analysis (13 enzymes) of these subpopulations indicated that differences between the 2 sympatric subpopulations (D = 0.07), collected using 2 different methods, were greater than that between the 2 allopatric ones (D = 0.03). These studies suggest the existence of 2 genetically different subpopulations of An. vestitipennis with specific host preferences.
authors.affiliation: Centro de Investigación de Paludismo, C.I.S.E.I., Instituto Nacional de Salud Pública, Chiapas, México.
authors.forename: J I
authors.initials: JI
authors.lastname: Arredondo-Jiménez
authors.forename: J
authors.initials: J
authors.lastname: Gimnig
authors.forename: M H
authors.initials: MH
authors.lastname: Rodríguez
authors.forename: R K
authors.initials: RK
authors.lastname: Washino
mesh_terms: D000483:Alleles; D000818:Animals; D000852:Anopheles / Q000235:genetics*; D002417:Cattle; D006801:Humans; D007299:Insect Bites and Stings; D007527:Isoenzymes / Q000235:genetics; D008800:Mexico
chemical_list: D007527:Isoenzymes