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3个单齿螺地理群体形态差异分析
引用本文:王旭,徐衡,邹莉,杜肖,王凤丽,郑伟,韩志强,水柏年.3个单齿螺地理群体形态差异分析[J].南方水产,2013(4):22-27.
作者姓名:王旭  徐衡  邹莉  杜肖  王凤丽  郑伟  韩志强  水柏年
作者单位:[1]浙江海洋学院水产学院,浙江舟山316000 [2]乐清市水产科学研究所,浙江乐清325600
基金项目:浙江省重中之重“海洋渔业科学与技术学科”
摘    要:运用多变量形态度量学方法,采用8个量度特征对大连、舟山和厦门3个单齿螺(Monodonta labio)地理群体的形态差异进行分析研究.聚类分析和主成分分析结果表明,舟山群体和厦门群体形态最为接近,大连群体趋异程度最大.主成分分析得出了3个主成分,其贡献率主成分1为57.49%,主成分2为18.80%,主成分3为10.40%,累计贡献率为86.69%.通过判别分析,建立了3个地理群体的判别函数,其判别准确率P1为63.16% ~ 81.82%,准确率P2为60.00% ~81.82%,综合判别率为74.13%.3个地理群体间最大差异系数为0.191 8~0.945 7,均小于1.28.多元分析结果表明,3个地理群体的形态特征之间有一定程度的差异,但差异尚未达到亚种水平.

关 键 词:单齿螺  群体  形态差异分析

Morphological variation analysis of three differente geographic populations of Monodonta labio
WANG Xu XU Heng ZOU Li DU Xiao WANG Fengli ZHENG Wei,HAN Zhiqiang,SHUI Bonian.Morphological variation analysis of three differente geographic populations of Monodonta labio[J].South China Fisheries Science,2013(4):22-27.
Authors:WANG Xu XU Heng ZOU Li DU Xiao WANG Fengli ZHENG Wei  HAN Zhiqiang  SHUI Bonian
Institution:1. Fishery College, Zhefiang Ocean University, Zhoushan 316000, China; 2. Fishery Science Institute of Yueqing City, Yueqing 325600, China)
Abstract:Through multivariate morphometrics methods and on 8 morphological proportional characters, we analyzed the morphologi- cal variations from three different geographical populations of Monodonta labio, which were collected from Dalian, Zhoushan and Xia- men. Cluster and principal component analyses showed that morphological characters were rather similar between Zhoushan population and Xiamen population, from which Dalian population was quite different. Three principal components were constructed, of which the contributory ratio, from high to low, were 57.49% , 18.80% and 10. 40% , summing up to 86. 69%. The discriminant functions of the three populations were established with discriminant accuracy 63.16% - 81.82% for P1 and 60. 00%- 81.82% for P2, and the average discriminant accuracy was 74. 13%. C. D between three geographical populations of Monodonta labio was 0. 1918 - 0. 9457, less than 1.28. The results of multi-variant indicate that there are some morphological differences among the three different geographical populations, but the morphological variation of them is characterized under-subspecies.
Keywords:Monodonta labio  populations  morphological variation analysis
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