长江中游湖泊鳜与大眼鳜的渐渗杂交 Hybridization and introgression between <i>Siniperca chuatsi</i> and <i>S. kneri</i> from two lakes in middle Yangtze River期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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长江中游湖泊鳜与大眼鳜的渐渗杂交

引用本文：	朱书琴,曹晓颖,赵金良,唐首杰,吴红岩.长江中游湖泊鳜与大眼鳜的渐渗杂交[J].上海海洋大学学报,2020,29(1):1-8.

作者姓名：	朱书琴曹晓颖赵金良唐首杰吴红岩

作者单位：	上海海洋大学农业农村部淡水水产种质资源重点实验室,上海 201306;上海海洋大学水产动物遗传育种中心上海市协同创新中心,上海 201306;上海海洋大学水产科学国家级实验教学示范中心,上海 201306;上海海洋大学农业农村部淡水水产种质资源重点实验室,上海 201306;上海海洋大学水产动物遗传育种中心上海市协同创新中心,上海 201306;上海海洋大学水产科学国家级实验教学示范中心,上海 201306;上海海洋大学农业农村部淡水水产种质资源重点实验室,上海 201306;上海海洋大学水产动物遗传育种中心上海市协同创新中心,上海 201306;上海海洋大学水产科学国家级实验教学示范中心,上海 201306;上海海洋大学农业农村部淡水水产种质资源重点实验室,上海 201306;上海海洋大学水产动物遗传育种中心上海市协同创新中心,上海 201306;上海海洋大学水产科学国家级实验教学示范中心,上海 201306;上海海洋大学农业农村部淡水水产种质资源重点实验室,上海 201306;上海海洋大学水产动物遗传育种中心上海市协同创新中心,上海 201306;上海海洋大学水产科学国家级实验教学示范中心,上海 201306

基金项目：	现代农业产业技术体系专项（CARS-46）

摘要：	在长江中游鄱阳湖和洞庭湖鳜采样中,采集了兼具鳜(Siniperca chuatsi)和大眼鳜(S.kneri)部分形态特征的中间类型(主要特征:口裂后缘伸达眼睛后缘之下,眼睛大小、头后背前部隆起介于鳜与大眼鳜之间)48尾。为了明确中间类型的分类学关系,采用量化传统形态分类指标、筛选种间特异微卫星标记,对中间类型个体进行鉴定分析。结果:(1)量化分析表明,鳜和大眼鳜在头长/眼径、(吻长+眼径)/口裂长上存在显著差异,鳜头长/眼径为5.286～7.157、(吻长+眼径)/口裂长为0.811～0.999,大眼鳜分别为3.306～5.106和1.040～1.166。48尾中间类型中,5尾判定为鳜,其他43尾个体仍不能鉴定。(2)从28对微卫星标记中筛选出5个鳜和大眼鳜的种间鉴别位点(T103、T063、T089、T135、W19517),利用这5个位点对中间类型的个体进行遗传分析和鉴定,中间类型中有16尾为种间杂交后代,其中9尾为杂交F_1与大眼鳜的回交个体。长江中游湖泊中鳜和大眼鳜存在种间渐渗杂交,今后需加强长江鳜鱼野生资源遗传监测和管理。
关键词：	鳜大眼鳜中间类型形态学微卫星渐渗杂交
收稿时间：	2019/4/22 0:00:00
修稿时间：	2019/5/19 0:00:00
*Hybridization and introgression between Siniperca chuatsi* and S. kneri from two lakes in middle Yangtze River**

ZHU Shuqin,CAO Xiaoying,ZHAO Jinliang,TANG Shoujie and WU Hongyan.Hybridization and introgression between Siniperca chuatsi and S. kneri from two lakes in middle Yangtze River[J].Journal of Shanghai Ocean University,2020,29(1):1-8.

Authors:	ZHU Shuqin CAO Xiaoying ZHAO Jinliang TANG Shoujie and WU Hongyan

Institution:	Laboratory of Freshwater Fisheries Germplasm Resource, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China;National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China,Laboratory of Freshwater Fisheries Germplasm Resource, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China;National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China,Laboratory of Freshwater Fisheries Germplasm Resource, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China;National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China,Laboratory of Freshwater Fisheries Germplasm Resource, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China;National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China and Laboratory of Freshwater Fisheries Germplasm Resource, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China;National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China

Abstract:	In sampling of Siniperca fishes from Poyang Lake and Dongting Lake in the middle Yangtze River, 48 intermediate individuals with partial morphological features of S. chuatsi and S. kneri (Main feature:The posterior edge of the cleft mouth is below the posterior edge of the eye, the eye size and the anterior ridge of head are between the S. chuatsi and S. kneri) were collected. In order to clarify their taxonomic relationship, the quantitative morphological parameters and species-specific microsatellite loci were screened for identification. Results showed:(1) there was significant difference in head length/eye diameter and (snout length+eye diameter)/fissure length between S. chuatsi and S. kneri. Head length/eye diameter in S. chuatsi is from 5.286 to 7.157, (snout length+eye diameter)/fissure length is from 0.811 to 0.999, they are from 3.306 to 5.106 and 1.040 to 1.166 in S. kneri, respectively. Among 48 intermediate individuals, 5 individuals were identified as S. chuatsi, and the remaining 43 individuals were still unable to be identified. (2) Five speices-specific loci (T103, T063, T089, T135, W19517) were screened from 28 pairs of microsatellite markers. In genetic analysis and identification of intermediate types of individuals using these five loci, 16 were inter-species hybrid progeny, and 9 of them were identified as backcross progeny (F₁×SK). The results indicated that inter-species introgressive hybridization between S. chuatsi and S. kneri existed in the middle Yangtze River, and it is necessary to strengthen genetic monitoring and management of mandarin fish resources in the Yangtze River.

Keywords:	Siniperca chuatsi Siniperca kneri intermediate form morphology microsatellite loci introgressive hybridization
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