中国布氏鲾属鱼类的分类探讨  

TAXONOMIC DISCUSSION OF GENUS EUBLEEKERIA FROM THE COASTAL WATERS OF CHINA

作　　者：蔡传更 居玉满 宋娜[2] 高天翔 CAI Chuan-Geng;JU Yu-Man;SONG Na;GAO Tian-Xiang(Fisheries College,Ocean University of China,Qingdao 266003,China;Key Laboratory of Mariculture,Ministry of Education,Ocean University of China,Qingdao 266003,China;Fishery College,Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]中国海洋大学水产学院,青岛266003 [2]中国海洋大学海水养殖教育部重点实验室,青岛266003 [3]浙江海洋大学水产学院,舟山316022

出　　处：《水生生物学报》2021年第1期69-75,共7页Acta Hydrobiologica Sinica

基　　金：国家自然科学基金(41776171)资助。

摘　　要：研究旨在利用传统形态学与DNA条形码技术相结合的方法,进一步探讨中国布氏鲾属Eubleekeria Fowler 1904鱼类的分类与鉴定问题。2014—2016年从广东湛江和广西北海、防城港和东兴近海采集了153尾鲾科鱼类样品,经形态学鉴定为布氏鲾属种类:琼斯氏布氏鲾Eubleekeria jonesi(James,1971)。该种主要鉴别特征为:眼位于口裂的水平线之上,颊部无鳞,两臀鳍之间区域裸露无鳞,颈部有半圆形裸露无鳞区域,背鳍上黑斑色淡,略呈灰色。将其鉴别特征与相关文献记录比较,表明之前中国大陆记录的黑边布氏鲾Eubleekeria splendens(Cuvier,1829)可能为琼斯氏布氏鲾。基于线粒体COⅠ基因片段结合GenBank中布氏鲾属鱼类的同源序列,采用邻接法构建的分子系统树显示,此研究中采集自中国大陆的布氏鲾属鱼类标本与中国台湾记录的黑边布氏鲾Eubleekeria splendens(Cuvier,1829)明显地分为两支。基于Kimura双参数模型(K2P)计算,支系间遗传距离为0.130,远大于支系内平均遗传距离(0.005和0.006),支持将二者作为独立物种的观点,与此研究传统形态学方法的结果一致。Ponyfishes of genus Eubleekeria,order Perciformes,Leiognathidae family,are widely distributed in the Indo-West Pacific.They are small edible fish.Using molecular methods and morphological analysis,the taxonomy of genus Eubleekeria in coastal waters of China was discussed.We collected 153 specimens of ponyfish from four locations(Zhanjiang,Beihai,Fangchenggang and Dongxing)of Chinese coastal waters during 2014—2015.All individuals were identified as Eubleekeria jonesi(James,1971).The diagnosis features were as follows:when mouth is closed,the lower orbital margin above horizontal line passed through the gape;the cheeks are exposed and the interspace of pelvic keels is naked;the dark blotch on the dorsal fin are dark gray;nape with a semicircular naked area.After re-examining the taxonomy books in China's Mainland,we found that the species identified as Leiognathus splendens or Eubleekeria splendens(Cuvier,1829)may be E.jonesi.We also analyzed the COI sequences of E.jonesi and related species.The mean genetic distances by Kimura-2-parameter model within E.jonesi and E.splendens were 0.005 and 0.006,respectively;and the average genetic distance between E.jonesi and E.splendens was 0.130,which supports their separate species status.The results are consistent with the morphological method in this study.

关 键 词：布氏鲾属 琼斯氏布氏鲾 黑边布氏鲾 物种鉴定 形态特征 DNA条形码 

分 类 号：Q959.483[生物学—动物学]