基于形态学和DNA条形码探讨“南鲳”物种有效性  

Species validity of“Nanchang”inferred from morphology and DNA barcoding

作　　者：李渊 王浩展 蔡紫紫 刘成 刘世刚 张然 林龙山 LI Yuan;WANG Haozhan;CAI Zizi;LIU Cheng;LIU Shigang;ZHANG Ran;LIN Longshan(Third Institute of Oceanography,MNR,Xiamen 361005,China;Sansha Marine Environmental Monitoring Center Station,SOA,Haikou 570311,China)

机构地区：[1]自然资源部第三海洋研究所,福建厦门361005 [2]国家海洋局三沙海洋环境监测中心站,海南海口570311

出　　处：《应用海洋学学报》2022年第2期310-316,共7页Journal of Applied Oceanography

基　　金：“全球变化与海气相互作用”专项资助项目(GASI-02-SCS-YDsum/spr/aut)。

摘　　要：众所周知鲳科鱼类均为重要的经济种类,在中国沿海仅见鲳属(Pampus)鱼类分布,而低鳍鲳属(Peprilus)和真鲳属(Stromateus)则分布于大西洋和东太平洋。本研究采用形态学和DNA条形码技术对海南、广西和广东水产品市场上出现的“南鲳”进行物种鉴定,同时下载该物种的COⅠ基因同源序列进行比较分析,并纠正GenBank中的错误序列。研究结果显示“南鲳”学名实为中间低鳍鲳(Peprilus medius),为冰冻进口货品,在我国沿海无该物种的分布报道,其与国内已知的6种鲳属鱼类在鳃耙、背鳍、臀鳍等外部形态上存在明显的差异,在COⅠ基因水平上与鲳属鱼类遗传距离为0.138,分化于中新世晚期。本研究可为水产品市场种类鉴定提供借鉴,也为鲳科鱼类的研究和海洋鱼类分类学提供基础数据和参考。It is well known that Stromateidae species are important commercial fishes.Only the Pampus species are found along the coast of China,while both Peprilus and Stromateus are distributed in the Atlantic and East Pacific.In this study,morphological characteristics and DNA barcoding technology were used to identify the species of“Nanchang”collected from Hainan,Guangdong and Guangxi.Meanwhile,the COⅠgene homologous sequences of this species were downloaded for comparative analysis,and the wrong sequences in GenBank were corrected.The results indicate that the scientific name of“Nanchang”is actually Peprilus medius,which is a frozen specimen imported from South America.There are no reports on the distribution of this species in the coastal areas of China,and there are obvious differences between P.medius and six Pampus species in China in the external morphology of gill rake,dorsal fin and gluteal fin.The genetic distance between P.medius and Pampus species at the COⅠgene level is 0.138,which were differentiated from the late Miocene.This study has provided a reference to the identification of commercial aquatic species,as well as basic data and a reference for Stromateidae and other marine fish taxonomy.

关 键 词：海洋生物学 物种扩张 系统进化 鲳科 DNA条形码 

分 类 号：P735[天文地球—海洋生物学]