Intrapopulational genetic differentiation in Anopheles (N.) darlingi Root, 1926 (Diptera: Culicidae) in the Amazon region
Intrapopulational genetic differentiation in Anopheles (N.) darlingi Root, 1926 (Diptera: Culicidae) in the Amazon region
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DOI：
10.1590/s1415-47571999000300007
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发表时间：
1999-09-01
影响因子：
2.1
通讯作者：
Contel, EPB
中科院分区：
文献类型：
--
作者：
dos Santos, JMM;Lobo, JA;Contel, EPB
对4个自然亚马逊河流域达氏按蚊种群的19个基因座进行了分析，其中12个基因座表现出变异，多态位点占68.4%。阿里克梅，朗多尼亚，人口是最可变的，具有大量的等位基因每个位点（2.26 +/- 0.27）和高多态性（P = 63.15）。观察到的和预期的基因座内杂合性的最高值在马瑙斯，亚马逊，人口（Ho = 0.432 +/- 0.11; He = 0.375 +/- 0.08），和最低的卡舒埃拉Porteira，帕拉，人口（Ho = 0.236 +/- 0.09; He = 0.290 +/- 0.11）。Wright的F-统计量揭示了由过量的纯合子引起的不平衡，如F-is > F-st值（F-is = 0.083 > 0.026）所示，反映了群体内的分化。研究的四个群体的遗传相似，所示的距离和相似性值。亚马逊人口的染色体变异也没有表明地理分化，在亚马逊流域的中心地区的人口表现出高度的多态性，在边缘人口，这主要是单态的。
Four natural Amazonian Anopheles darlingi populations were analyzed for 19 loci, 12 of which showed variation, i.e., 68.4% of polymorphic loci. The Ariquemes, Rondonia, population was the most variable, with a large number of alleles per locus (2.26 +/- 0.27) and high polymorphism (P = 63.15). The highest values of observed and expected intralocus heterozygosity were observed in the Manaus, Amazonas, population (Ho = 0.432 +/- 0.11; He = 0.375 +/- 0.08), and the lowest in the Cachoeira Porteira, Para, population (Ho = 0.236 +/- 0.09; He = 0.290 +/- 0.11). Wright's F-statistic revealed disequilibrium caused by an excess of homozygotes, as shown by the F-is > F-st values (F-is = 0.083 > 0.026) reflecting intrapopulational differentiation. The four populations studied were genetically similar, as indicated by distance and similarity values. Chromosomal variation of Amazon population also did not indicate geographical differentiation, and populations in the central region of the Amazon Basin showed high polymorphism in relation to the marginal populations, which were mainly monomorphic.