中国沿海管角螺4个自然群体形态差异的比较  

Morphological Variation Analysis of Four Different Natural Populations of Hemifusus tuba Gmelin in China

作　　者：罗福广[1] 李斌[1] 罗平秀[1] 郑惠芳[1] 潘英[1] 

机构地区：[1]广西大学动物科学技术学院,广西南宁530004

出　　处：《中国海洋大学学报（自然科学版）》2010年第3期65-70,共6页Periodical of Ocean University of China

基　　金：广西科学研究与技术开发计划项目(0718003-3-6);北海市科学研究与技术开发计划(200701036)资助

摘　　要：运用多变量形态度量学方法,采用7个形态性状对中国北海、温州、湛江、连云港4个管角螺自然群体的形态变异进行分析研究。聚类分析和主成分分析结果表明,北海群体与湛江群体形态最为接近,而温州群体与连云港群体形态差异较大。主成分分析构建了4个主成分,其贡献率：主成分1为42.74%,主成分2为18.23%,主成分3为15.83%,主成分4为11.83%,累计贡献率为88.63%。建立了4个管角螺群体的判别函数,其判别准确率P1为81.3%-95.6%,判别准确率P2为75.0%-93.3%,综合判别率为87.3%。3种多元分析结果均认为,4个群体在形态上有一定程度的差异,与地理分布、环境、气候、生物饵料等因子有关,但差异尚未达到亚种水平。By applying multi-variant morphological measurement data,we used 7 morphological proportional characters to analyze the morphological variations from four different natural populations of Hemifusus tuba Gmelin,which were respectively located in Beihai,Wenzhou,Zhanjiang and Lianyungang.From cluster and principal component analyses,morphological characters were rather similar between Beihai and Zhanjiang populations,whereas high variance was found between Wenzhou and Lianyungang populations.Four principal components were constructed,the contributory ratio,from high to low,was 42.74%,18.23%,15.83% and 11.83%,respectively,with 88.63% as the cumulative contributory ratio.The discriminant functions of the four populations were established,the discriminant accuracy being 81.3%～95.6% for P1 and 75.0%～93.3% for P2,the average discriminant accuracy being 87.3%.The results of multivariation analysis indicated that there were some morphological differences in the four different geographical populations,which were related to geographical distribution,environment,climate,food,and so on.But the morphological variation of them was characterized under-subspecies.

关 键 词：管角螺 种群 形态差异 判别分析 

分 类 号：S917.4[农业科学—水产科学]