Monteiro Fernando A, Jurberg José, Lazoski Cristiano
Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.
Am J Trop Med Hyg. 2009 Aug;81(2):223-7.
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).
通过对28个等位酶位点的分析，确定了来自巴西东南部四个种群的181只污色锥蝽昆虫的遗传变异水平和种群结构。这些位点在任何两个种群之间均未呈现固定差异，仅有两个位点表现出多态性，导致杂合度水平较低（H(e)=0.027），且种群间的遗传距离较短（D<0.03）。F(ST)和列联表结果表明种群间存在遗传结构（F(ST)=0.214），这与距离隔离模型不相符（曼特尔检验：r=0.774；P=0.249）。
