大泷六线鱼不同群体的形态差异分析  

Analysis of Morphological Variation of Different Populations of Fat Greenling Hexagrammos otakii

作　　者：孙诗萌[1] 安百胜 蔡明城 高伟峰[1] 张赛赛[1] 王伟[1] 

机构地区：[1]大连海洋大学农业部北方海水增养殖重点实验室,辽宁大连116023 [2]辽宁清河水库管理局,辽宁铁岭112000

出　　处：《水产学杂志》2015年第4期6-11,共6页Chinese Journal of Fisheries

基　　金：国家自然科学基金项目(41101481);国家"863"计划项目(2012AA10A413-3)

摘　　要：应用主成分分析、判别分析和聚类分析三种分析方法,分析6个不同地理群体大泷六线鱼Hexagrammos otakii的形态差异。结果表明:大泷六线鱼的形态差异体主要现在整体上。主成分分析结果显示:6个群体的大泷六线鱼形态差别在某种程度上由鱼体的纵向差异及尾部的形态差别引起。判别分析方程表明:6个群体的综合判别率为83.9%。聚类分析将6个群体的大泷六线鱼聚为两支,东港、长海县、瓦房店、旅顺,和青岛5个群体形态比较接近,成为一支,而大连黑石礁群体单独成支。Three types of analysis method including clustering analysis, principal component analysis and diseriminant analysis were used to analyze the morphological differences between six geographical populations of fat greenling Hexagrammos otakii. The results showed that the morphological differences of the fat greenling were primarily reflected in the whole body. Principal component analy- sis showed that the mainly differences were caused by the longitudinal differences and the caudal shape difference. The equation of discriminant analysis indicated that the total discriminant accuracy of these populations was 83.9%. The cluster analysis revealed that six populations were clustered into two branches, Dalian population alone, and the other five populations together.

关 键 词：大泷六线鱼 群体 形态差异 主成分分析 判别分析 聚类分析 

分 类 号：S917[农业科学—水产科学] Q347[生物学—遗传学]