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First description of the mitogenome and phylogeny:Aedes vexansand Ochlerotatus caspius of the Tribe Aedini (Diptera: Culicidae)

文献类型： 外文期刊

作者： Ma, Xiao-xiao 1 ; Wang, Feng-feng 2 ; Wu, Ting-ting 2 ; Li, Ye 3 ; Sun, Xiao-jing 5 ; Wang, Chun-ren 2 ; Chang, Qiao-cheng 1 ;

作者机构： 1.Shantou Univ, Sch Publ Hlth, Shantou 515063, Guangdong, Peoples R China

2.Heilongjiang Bayi Agr Univ, Coll Anim Sci & Vet Med, Heilongjiang Prov Key Lab Prevent & Control Bovin, Daqing 163319, Heilongjiang, Peoples R China

3.Heilongjiang Acad Agr Sci, Branch Anim Husb, Qiqihar 161005, Heilongjiang, Peoples R China

4.Heilongjiang Acad Agr Sci, Vet Branch, Qiqihar 161005, Heilongjiang, Peoples R China

5.Xian Med Univ, Sch Basic Med Sci, Xian 710021, Shanxi, Peoples R China

关键词： Aedini tribe; Aedes vexans; Ochlerotatus caspius; Mitochondrial genome; Phylogenetic analyses

期刊名称：INFECTION GENETICS AND EVOLUTION （ 影响因子：4.393； 五年影响因子：3.656 ）

ISSN： 1567-1348

年卷期： 2022 年 102 卷

页码：

收录情况： SCI

摘要： Culicidae, the mosquito family, includes more than 3600 species subdivided into the subfamilies Anophelinae and Culicinae. One-third of mosquitoes belong to the Aedini tribe, which is subordinate to the subfamily Culicinae, which comprises common vectors of viral zoonoses. The tribe of Aedini is extremely diverse in morphology and geographical distribution and has high ecological and medical significance. However, knowledge about the systematics of the Aedini tribe is still limited owing to its large population and the similar morphological characteristics of its species. This study provides the first description of the complete mitochondrial (mt) genome sequence of Aedes vexans and Ochlerotatus caspius belonging to the Aedini tribe. The mt genomes of A. vexans and O. caspius are circular molecules that are 15,861 bp and 15,954 bp in size, with AT contents of 78.54% and 79.36%, respectively. Both the circular mt genomes comprise 37 functional subunits, including 13 protein-coding genes (PCGs), two ribosomal RNA genes, 22 transfer RNA genes (tRNAs), and a control region (also known as the AT-rich region). The most common start codons are ATT/ATG, apart from cox1 (TCG) and nad5 (GTG), while TAA is the termination codon for all PCGs. All tRNAs have a typical clover leaf structure, except tRNA Ser1. Phylogenetic analysis of the concatenated, aligned amino acid sequences of the 13 PCGs showed that A. vexans gathered with Aedes sp. in a sister taxon, and O. caspius gathered with Ochlerotatus sp. in a sister taxon. The findings from the present study support the concept of monophyly of all groups, ratify the current taxonomic classification, and provide vital molecular marker resources for further studies of the taxonomy, population genetics, and systematics of the Aedini tribe.

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