Inferring from the Cyt B gene the Triatoma brasiliensis Neiva, 1911 (Hemiptera: Reduviidae: Triatominae) genetic structure and domiciliary infestation in the state of Paraiba, Brazil
Inferring from the Cyt B gene the Triatoma brasiliensis Neiva, 1911 (Hemiptera: Reduviidae: Triatominae) genetic structure and domiciliary infestation in the state of Paraiba, Brazil
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DOI：
10.4269/ajtmh.2008.78.791
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发表时间：
2008-05-01
影响因子：
3.3
通讯作者：
Costa, Jane
中科院分区：
文献类型：
--
作者：
Almeida, Carlos Eduardo;Pacheco, Raquel S.;Costa, Jane
利用Cyt B基因分析了杀虫剂处理后不同地理位置和生态环境下巴西三角瘤（Triatoma brasiliensis）的遗传结构。在巴西帕拉伊巴州的四个不同地区（相距16-40公里）进行了采样。分子方差分析（AMOVA）结果表明，按地理位置或生态区对种群进行分组时，种群间的方差（Phi（SC）为0.15 ~ 0.17）大于种群间的方差（Phi（CT）为0.04 ~ 0.07）。群落内种群间变异率降低，群落间变异率升高(Phi（SC) = 0.08, Phi(CT) = 0.16）。这些数据表明，巴西芽孢杆菌在生态上和较小的地理尺度上都具有遗传结构。杀虫剂处理后的再侵染由不同的种群组成，表明住所侵染的种群来源是可变的。
The Triatoma brasiliensis genetic structure was analyzed using the Cyt B gene in different geographic locations and ecotopes after a short and long period after insecticide treatment. Four different localities (16-40 km apart) in the state of Paraiba, Brazil, were sampled. Analysis of molecular variance (AMOVA) showed that grouping populations according to the geographic location or ecotope resulted in a higher variance among populations within groups (Phi(SC) ranging from 0.15 to 0.17) than among groups (Phi(CT) ranging from 0.04 to 0.07). The percentage of variation was reduced among populations within groups and increased among groups (Phi(SC) = 0.08, Phi(CT) = 0.16) by grouping 1) the domiciliary populations from each village and 2) all wild populations. These data indicated that T brasiliensis is genetically structured both ecologically and at a smaller geographic scale for domiciliary populations. Re-infestations after insecticide treatment were composed of distinct populations, pointing to variable population sources for domiciliary infestations.