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当前位置: 首页 > 文章 > 棕点石斑鱼(♀)*蓝身大斑石斑鱼(♂)杂交后代与亲本的形态差异 广东海洋大学学报 2019 (6) 17-22
Position: Home > Articles > 棕点石斑鱼(♀)*蓝身大斑石斑鱼(♂)杂交后代与亲本的形态差异 Journal of Guangdong Ocean University 2019 (6) 17-22

棕点石斑鱼(♀)*蓝身大斑石斑鱼(♂)杂交后代与亲本的形态差异

作  者：
吴玉萍;田永胜;李振通;张晶晶;李子奇;成美玲;王林娜;马文辉;庞尊方;翟介明
单  位：
中国水产科学研究院黄海水产研究所 农业部海洋渔业可持续发展重点实验室;莱州明波水产有限公司;中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室
关键词：
棕点石斑鱼;蓝身大斑石斑鱼;杂交子代;形态差异;多元分析
摘  要：
[目的]研究棕点石斑鱼(Epinephelusfuscoguttatus)、蓝身大斑石斑鱼(Epinephelustukula)及杂交子代的形态差异.[方法]测量3个石斑鱼群体的20个形态性状,并进行聚类分析、主成分分析和判别分析.[结果]聚类分析表明,杂交子代与父本蓝身大斑石斑鱼距离较近(2.436).主成分分析构建了6个主成分,其贡献率分别为39.355%、16.722%、12.345%、7.941%、6.450%、5.599%,累计贡献率为88.413%;用6个主成分构建的三维空间散布图中,杂交子代与蓝身大斑石斑鱼存在重叠.判别分析筛选出6个贡献较大参数,分别为D8(背鳍前端基部至腹鳍基部长/体长)、D3(眼径/体长)、D5(体高/体长)、D2(吻长/体长)、D14(胸鳍基部至尾鳍基部长/体长)、D17(臀鳍前端基部至尾鳍长/体长),建立分类判别函数:Y1=1678.062D2+5095.854D3-1794.945D5+1947.116D8+1396.611D14+168.858D17-701.386,Y2=1456.128D2+4466.451D3-1338.855D5+1832.817D8+1201.842D14+259.712D17-678.894,Y3=1755.784D2+3972.479D3-1454.481D5+1679.688D8+1372.581D14+139.714D17-665.639,综合判别率为98.51%,所建立判别函数可快速区分3个石斑鱼群体.[结论]棕点石斑鱼雌性与蓝身大斑石斑鱼雄性的杂交后代在形态上更接近于父本,为两种石斑鱼杂交育种提供了丰富的生物学依据.
作  者：
WU Yu-ping;TIAN Yong-sheng;LI Zhen-tong;ZHANG Jing-jing;LI Zi-qi;CHENG Mei-ling;WANG Lin-na;MA Wen-hui;PANG Zun-fang;ZHAI Jie-ming;Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;College of Fisheries and Life Science,Dalian Ocean University;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology;College of Fishers and Life Sciences, Shanghai Ocean University;Ming Bo Aquatic Co.Ltd.;
关键词：
Epinephelus fuscoguttatus;;Epinephelus tukula;;hybrid;;morphological difference;;multivariate analysis
摘  要：
【Objectives】To study the morphological differences of Epinephelus fuscoguttatus, Epinephelus tukula and hybrid F1(Jinhu grouper). 【Method】A total of 20 morphological traits of 3 grouper populations were measured. Cluster analysis, principal components analysis and discriminant analysis were carried out. 【Result】The cluster analysis showed that the distance between the hybrid F1 was closer(2.436) to the parent E. tukula. Principal components analysis constructed six principal components with contribution rates of 39.355%, 16.722%, 12.345%, 7.941%, 6.450%, and 5.599%, respectively. The cumulative contribution rate was 88. 413%. The three-dimensional spatial scatter plot constructed using six principal components revealed that the hybrid F1 overlaped with E. tukula, so the hybrid F1 was morphologically closer to the parent E. tukula. This was consistent with the results of cluster analysis. Discriminant analysis method was used to screened six major contributing parameters: D8(frontal base of the dorsal fin to apical fin base/body length), D3(eye diameter/body length), D5(body height/body length), D2(snout length/body length), D14(thoracic fin base to caudal fin base/body length), D17(anal base of the anal fin to caudal fin length/body length). It had established the following classification discriminant functions: Y1 = 1678.062 D2 + 5095.854 D3 - 1794.945 D5 + 1947.116 D8 + 1396.611 D14 + 168.858 D17 - 701.386, Y2 = 1456.128 D2 + 4466.451 D3 - 1338.855 D5 + 1832.817 D8 + 1201.842 D14 + 259.712 D17 - 678.894, Y3 = 1755.784 D2 + 3972.479 D3 - 1454.481 D5 + 1679.688 D8 + 1372.581 D14 + 139.714 D17 - 665.639). The comprehensive discriminant rate reached 98.51%. The established discriminant function could distinguish three grouper groups. 【Conclusion】The results indicated that the hybrid F1 of E. fuscoguttatus and E. tukula bore more resemblance to its male parent E. tukula in appearance, which provided a biological basis for the cross breeding between the two groupers.

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