| 摘要: |
| 本研究针对中国沿海银口天竺鲷属鱼类分类鉴定不清晰，同种异名多，种类误鉴等分类问题，结合形态特征比较与DNA条形码技术对其分类鉴定问题进行梳理。2014—2019年间于南海北部沿海采集101尾银口天竺鲷属鱼类标本，经形态学特征鉴定为：横带银口天竺鲷Jaydia striata（Smith&Radcliffe，1912），特征为体侧有7—11褐色宽横带，腹鳍、臀鳍浅灰色；印度洋银口天竺鲷J.striatodes（Gon，1997），特征为体侧有7—11褐色宽横带，臀鳍后缘黑色；白边银口天竺鲷J.novaeguineae（Valenciennes，1832），特征为臀鳍、尾鳍最下缘为白边；黑边银口天竺鲷J.truncata（Bleeker，1855）特征为第二背鳍、臀鳍中部有一平行基底的黑色带，尾鳍后缘黑色带略宽；史密斯银口天竺鲷J.smithi Kotthaus，1970，特征为第二背鳍中部有一平行基底的黑色纵带，尾鳍后缘黑色带略细；斑鳍银口天竺鲷J.carinatus （Cuvier，1828），特征为第二背鳍最末软条基底有一大黑斑；黑鳃银口天竺鲷J.poeciloptera （Cuvier，1828），特征为臀鳍淡黄色，鳍膜间有一暗点。研究发现Apogon arafurae并不是J.truncata同种异名，学名应更正为Jaydia poeciloptera。基于线粒体COI基因K2P遗传距离显示，J.striata、J.smithi、J.truncata种内遗传距离大于2%。构建NJ系统发育树发现红海、阿拉伯海和北部湾的J.smithi分成2个单系支。结合NJ树分析发现，J.smithi和J.poeciloptera均出现错误鉴定，认为GenBank上传的序列（MH085808、JQ681491）存在误鉴，实为J.poeciloptera。 |
| 关键词: 银口天竺鲷属 形态学 COI基因 分类学 |
| DOI：10.11693/hyhz20200400128 |
| 分类号:Q959.483 |
| 基金项目:国家重点研发计划项目，2018YFD0900905号；南方海洋科学与工程广东省实验室（湛江）资助项目，ZJW-2019-08号；广东省科技计划项目，2018B030320006号；广东省基础与应用基础研究基金，2019B1515120064号 |
附件 |
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| CLASSIFICATION AND IDENTIFICATION OF CARDINALFISH (APOGONIDAE: JAYDIA) IN COASTAL CHINA BASED ON MORPHOLOGICAL CHARACTERISTICS AND DNA BARCODE |
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LUO Zhi-Sen1, YI Mu-Rong1,2, LIU Si-Biao1, QIU Kang-Wen1, GU Sui1, YAN Yun-Rong1,2,3,4
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1.College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China;2.Marine Resources Big Data Center of South China Sea, Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang), Zhanjiang 524013, China;3.Guangdong Provincial Engineering and Technology Research Center of Far Sea Fisheries Management and Fishing of South China Sea, Guangdong Ocean University, Zhanjiang 524088, China;4.Center of Marine Fisheries Information Technology, Shenzhen Institute of Guangdong Ocean University, Shenzhen 518120, China
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| Abstract: |
| Classification and identification of Jaydia in coastal China were organized through morphological characteristics and DNA barcode. One hundred and one specimens of Jaydia were collected in the South China Sea from 2014 to 2019. Some of the main identification features are: J. striata (Smith & Radcliffe, 1912), 7—11 narrow dark brown bars on the body; pelvic and anal fins pale. J. striatodes (Gon, 1997), 7—11 narrow dark brown bars on the body; caudal fin with relatively wide dark band on distal margin. J. novaeguineae (Valenciennes, 1832), bottom edge of anal and caudal fins white. J. truncata (Bleeker, 1855), second dorsal and anal fins with a dark brown stripe across middle of fins; caudal fin pale to dusky with wied darker distal edge. J. smithi Kotthaus, 1970, second dorsal fin with a dark brown stripe across middle of fin; caudal fin pale to dusky with narrow darker distal edge. J. carinatus (Cuvier, 1828), with a large, black spot at base of last ray of second dorsal fin. J. poeciloptera (Cuvier, 1828), with yellow anal fin and a dark spot between membrane. Apogon arafurae is not a synonym of J. truncata and its valid name should be corrected to J. poeciloptera. Molecular phylogenetic tree constructed by Neighbour-joining (NJ) method shows that interspecific genetic distance of J. striata, J. smithi, and J. truncata of Kimura 2-parameter were greater than 2%. A branch of J. smithi distributing in Rea Sea, Arabian Sea, and Beibu Gulf of China divided into two geographical groups. The NJ tree shows that misidentification was found in J. smithi and J. poeciloptera. Sequences of MH085808, JQ681491 in GenBank were misidentified, which may be J. poeciloptera. |
| Key words: Jaydia morphology COI gene taxonomy |
