Vendrami Daniel Pagotto, Obara Marcos Takashi, Gurgel-Gonçalves Rodrigo, Ceretti-Junior Walter, Marrelli Mauro Toledo
Instituto de Medicina Tropical de São Paulo, Universidade de São Paulo, São Paulo, Brazil.
Faculdade de Ceilândia, Universidade de Brasília, Brasília, Brazil.
Infect Genet Evol. 2017 Apr;49:17-20. doi: 10.1016/j.meegid.2016.12.031. Epub 2016 Dec 28.
Triatoma sordida has a widespread distribution in Argentina, Bolivia, Brazil, Paraguay, and Uruguay and is frequently found in peridomestic environments. We investigated size and shape variability of T. sordida wings across Brazil. Field-collected adults from twelve populations were studied. For each individual female, seven landmarks on the right wing were digitalized. Shape variables derived from Procrustes superimposition were used in Principal Component Analysis (PCA). Wing size and shape variations among populations was explored by means of ANOVA. Wing centroid size was significantly different among T. sordida populations; specimens from Bahia (East) were larger than those of Mato Grosso do Sul (West). PCA based on wing shape variables showed low wing shape variability. These results reinforce previous data showing low genetic variability among T. sordida populations from Brazil.
污色锥蝽在阿根廷、玻利维亚、巴西、巴拉圭和乌拉圭广泛分布，且常在住宅周边环境中被发现。我们研究了巴西各地污色锥蝽翅膀的大小和形状变异情况。对从12个种群中野外采集的成虫进行了研究。对于每只雌虫，对其右翼上的7个地标点进行数字化处理。从普氏叠加法得出的形状变量被用于主成分分析（PCA）。通过方差分析探究了不同种群间翅膀大小和形状的差异。污色锥蝽不同种群间的翅膀质心大小存在显著差异；来自巴伊亚州（东部）的标本比南马托格罗索州（西部）的标本更大。基于翅膀形状变量的主成分分析显示翅膀形状变异程度较低。这些结果强化了之前的数据，表明来自巴西的污色锥蝽种群间遗传变异程度较低。
