Article
Very Low Levels of Genetic Variation in Natural Peridomestic Populations of the Chagas Disease Vector Triatoma sordida (Hemiptera: Reduviidae) in Southeastern Brazil
Registro en:
MONTEIRO, Fernando A.; JURBERG, José; LAZOSKI, Cristiano. Very Low Levels of Genetic Variation in Natural Peridomestic Populations of the Chagas Disease Vector Triatoma sordida (Hemiptera: Reduviidae) in Southeastern Brazil. Am. J. Trop. Med. Hyg., v.81, n.2, p.223-227, 2009.
0002-9637
1476-1645
Autor
Monteiro, Fernando A.
Jurberg, José
Lazoski, Cristiano
Resumen
Levels of genetic variation and population structure were determined for 181 Triatoma sordida insects from
four populations of southeastern Brazil, through the analysis of 28 allozyme loci. None of these loci presented fixed differences
between any pair of populations, and only two revealed polymorphism, accounting for low levels of heterozygosity
( H e = 0.027), and low genetic distances ( D < 0.03) among populations. F ST and Contingency Table results indicated the
existence of genetic structure among populations ( F ST = 0.214), which were incompatible with the isolation by distance
model (Mantel test: r = 0.774; P = 0.249).