| 摘要: |
| 以耳石宽/耳石长(W/H)、主叶斜长/耳石长(L/H)、侧叶斜长/耳石长(l/H)、核宽/耳石宽(ow/W)、主叶宽/耳石宽(w/W)、主叶长/耳石长(h/H)、侧叶宽/主叶宽(w'/w)、主叶宽/主叶长(w/h)、核宽/核长(ow/oh)、核长/第一年年轮直径(oh/D)为具体形态学分析参数,比较了鲈鱼、花鲈的舟山、福州、厦门和广西近海群体耳石的形态学特征。结果表明,鲈鱼与花鲈耳石形态、耳石重-耳石长的关系差异显著;聚类分析显示鲈鱼与花鲈舟山、福州、厦门、广西群体间的欧氏距离分别为4.538、5.656、5.396、4.670,花鲈各群体间欧氏距离在2.108-4.566之间。认为中国近海不同海域的花鲈群体耳石形态具有显著的地理变异,谨慎提出前述中国近海的花鲈分为三个不同的地理种群,即舟山种群、福州-厦门种群和广西种群的可能性。 |
| 关键词: 花鲈 耳石 形态特征 种群鉴别 |
| DOI： |
| 分类号: |
| 基金项目:国家重点基础研究发展计划(973计划)资助,2005CB422306号 |
附件 |
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| THE GEOGRAPHICAL DIFFERENTIATION IN OTOLITH MORPHOLOGY OF SEA BASS: LATEOLABRAX JAPONICUS AND L. MACULATES |
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YE Zhen-Jiang1, MENG Xiao-Meng1, GAO Tian-Xiang1, YANG Yong-Huan2, WANG Ying-Jun1
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1.Fisheries College, Ocean University of China, Qingdao, 266003;2.The Fisheries Arrangement Station of Beihai, Guangxi, Beihai, 536000
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| Abstract: |
| Morphology of otolith of sea bass was applied to identify Japanese Lateolabrax japonicus and Chinese L. maculates in this paper. The otoliths of them were collected in Tokyo Bay (Japan) and Chinese marine regions including Zhoushan Islands, Fuzhou and Xiamen offshore, and Beibu (Tonkin) Gulf of Guangxi Province and cluster-analyzed with difference coefficient, Mdiff, and so on. Significant differences in relation of otolith weight and otolith length were found between L. japonicus and L. maculates. The Euclidean distances of them varied between 4.538 and 5.656, while those of the L. maculates samples were between 2.108 and 4.566. Therefore, significant geographical differentiation in otolith morphology has been took place in different Chinese coastal waters. Three geographical populations of L. maculates in China are proposed, i.e. Zhoushan, Fuzhou-Xiamen, and Guangxi populations. |
| Key words: Lateolabrax sp., Otolith, Morphology, Population identification |
