Culicidae evolutionary history focusing on the Culicinae subfamily based on mitochondrial phylogenomics

基于线粒体系统基因组学的蚊科进化史,重点关注蚊亚科

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作者:Alexandre Freitas da Silva, Laís Ceschini Machado, Marcia Bicudo de Paula, Carla Júlia da Silva Pessoa Vieira, Roberta Vieira de Morais Bronzoni, Maria Alice Varjal de Melo Santos, Gabriel Luz Wallau

Abstract

Mosquitoes are insects of medical importance due their role as vectors of different pathogens to humans. There is a lack of information about the evolutionary history and phylogenetic positioning of the majority of mosquito species. Here we characterized the mitogenomes of mosquito species through low-coverage whole genome sequencing and data mining. A total of 37 draft mitogenomes of different species were assembled from which 16 are newly-sequenced species. We datamined additional 49 mosquito mitogenomes, and together with our 37 mitogenomes, we reconstructed the evolutionary history of 86 species including representatives from 15 genera and 7 tribes. Our results showed that most of the species clustered in clades with other members of their own genus with exception of Aedes genus which was paraphyletic. We confirmed the monophyletic status of the Mansoniini tribe including both Coquillettidia and Mansonia genus. The Aedeomyiini and Uranotaeniini were consistently recovered as basal to other tribes in the subfamily Culicinae, although the exact relationships among these tribes differed between analyses. These results demonstrate that low-coverage sequencing is effective to recover mitogenomes, establish phylogenetic knowledge and hence generate basic fundamental information that will help in the understanding of the role of these species as pathogen vectors.

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