广蜡蝉科三个代表种的线粒体基因组结构比较及其系统发育含义(半翅目:蜡蝉总科)  

Comparative analysis of the complete mitochondrial genomes of three representatives in Ricaniidae(Hemiptera:Fulgoroidea),with phylogenetic implications

作　　者：张欢 秦道正[1] Huan ZHANG;Daozheng QIN(College of Plant Protection,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学植物保护学院,陕西杨凌712100

出　　处：《Entomotaxonomia》2024年第1期14-26,共13页昆虫分类学报（英文）

基　　金：supported by the National Natural Science Foundation of China (31672340,31750002,32170475)。

摘　　要：对广蜡蝉科内的类广蜡蝉属、曲广蜡蝉属和疏广蜡蝉属各1个代表种的线粒体基因组进行了测序和组装,发现琼边类广蜡蝉,福建曲广蜡蝉和透明疏广蜡蝉的完整线粒体基因组长度分别为15,906,15,809和16,127bp,整个线粒体基因组呈正AT偏斜和负GC偏斜,r RNAs基因的A+T含量略高于t RNAs;所有蛋白编码基因(PCGs)均以起始密码ATN开头,以TAA、TAG或1个不完整的终止密码子单T结尾。划窗分析、Ka/Ks和遗传距离分析均表明,与其他PCGs相比,基因cox1进化最慢且相对保守,可以用于广蜡蝉科高级阶元系统发育关系探讨。本文还基于现有线粒体基因组数据分析了该科5属11种的系统发育关系。In this paper,the mitogenomes of three species in Ricaniidae,Ricanoides flabellum Noulhier,Ricanula fujianensis Ren,Stroiński&Qin and Euricania clara Kato,were sequenced and assembled.Their total lengths were 15,906,15,809 and 16,127 bp,respectively.The whole mitogenomes showed a positive AT skew and negative GC skew.The A+T content of the rRNAs was slightly higher than that of the tRNAs.All protein-coding genes(PCGs)begin with the start codon ATN and end with TAA,TAG or an incomplete stop codon single T.The sliding window,Ka/Ks,and genetic distance analyses indicated that the cox1 gene was the slowest evolving.The cox1 gene was determined to be the most conserved and exhibited a slow evolution rate compared to other PCGs.It can be used as one of the genetic markers for phylogenetic analysis of the higher taxa of Ricaniidae.The phylogenetic relationships of 5 genera and 11 species in this family were also analyzed based on available mitochondrial genome data.

关 键 词：头喙亚目 分类 系统发育 

分 类 号：Q969.35[生物学—昆虫学]