Estruturação genética de Simothraulopsis diamantinensis Mariano, 2010 (Insecta: Ephemeroptera)

Abstract

Simothraulopsis Demoulin (1960) belongs to Leptophlebiidae family and consists of nine restricted species to Neotropical region. Currently the records of occurrence of Simothraulopsis diamantinensis Mariano (2010) show a disjunct distribution and can be found in the state of Espírito Santo, in the Serra do Cipó - Minas Gerais and in the Chapada Diamantina - Bahia. In this work we tried to get the standard of genetic variation for S. diamantinensis and relate them to past events in a phylogeographic context. Were used sequences of two regions of the mitochondrial gene: COII and COII of 57 and 61 individuals, respectively. For this was conducted analysis of genetic diversity, geographic structure and demographic history. The results of genetic diversity and geographical structure revealed a strong organization and the populations of S. diamantinensis were subdivided into: (Vale do Capão + Serra do Cipó, Lençóis, Mucugê, Santa Teresa, Northern of Espírito Santo and Alegre), furthermore the high Fst values found show that several populations are isolated from each other and there is no more gene flow between them. The demographic history of results suggest that the standard of diversification found for the species had influence of the Last Glacial Maximum, however it is possible to have occurred milestones that coincide geological and climatic events affecting the diversification in time and space, which may have been erased by recent genetic signatures.