摘要
针对银鲳(Pampus argenteus)资源衰减、种群结构不清等问题,采集了渤海、黄海和东海近海5个地理群体224个样本,借助多变量形态度量学方法对地理群体间的形态变异进行了研究,旨在为银鲳种群结构研究提供基础资料。研究结果显示,通过聚类分析发现银鲳5个地理群体可以分为4组,江苏连云港群体与河北黄骅群体和浙江舟山群体欧氏距离较小,表明其亲缘关系较近;江苏连云港群体而与福建霞浦群体欧氏距离最大,其亲缘关系较远。利用判别分析和典型变量分析均可以将5个地理群体予以区分,表明银鲳地理群体间形态上存在着一定的差异,但并非某个部位发生变异。地理群体间的栖息环境和生活史差异可能是导致形态变异的主要原因。根据聚类分析、判别分析和典型变量分析综合比较,推测渤海、黄海和东海区银鲳群体可能存在着3个形态差异种群,即黄渤海种群、东海北部种群和东海南部种群。
Silver pomfret（Pampus argenteus） is one of the most commercially important marine fish species in China,and its resource has declined sharply in recent years.So far,the population diversity research is rare,and the stock structure of silver pomfret is not clear which are very crucial for rational conservation and exploitation of this important species.So,five geographic samples,totally 224 individuals,were collected near coastal areas of the Bohai Sea,Huanghai Sea and East China Sea.The morphological variation among five samples was studied by using the method of multivariate morphometics.The result of cluster analysis showed that five samples were divided into 4 groups.The normalized Euclidean distance between Lianyungang（LYG） and Zhoushan（ZS） and Huanghua（HH） samples was shorter than others,which indicates that these three samples have close relationship.However,the normalized Euclidean distance between Xiapu（XP） and Lianyungang（LYG） samples was the largest.The results of stepwise discriminate analysis and canonical variate analysis showed that five samples could be separated accurately,which indicates that there were morphological differentiation among five samples.Different life history and habitat environmental factors may contribute to the morphological variation.Based on the results from cluster analysis,stepwise discriminate analysis and canonical variate analysis,there were probably three different morphological populations in the Bohai Sea,Huanghai Sea and East China Sea,that is Huanghai Sea-Bohai Sea,northern East China Sea,and southern East China Sea populations.
出处
《海洋学报》
CAS
CSCD
北大核心
2011年第1期104-110,共7页
基金
中央级公益性科研院所基本科研业务费专项资金(ECSFRI-2007Z02)
农业部海洋与河口渔业资源及生态重点开放实验室开放课题(开-1-04-13)
作者简介
赵峰（1978-），男，山东省德州市人，助理研究员，博士，从事鱼类生态生理和种质资源研究。Email：drzhaofeng@hotmail．com
＊通信作者：庄平（1960-），男，研究员，博士，主要从事渔业资源及保护研究。Email：pzhuang@online．sh．cn
