摘要
为了探讨罗氏沼虾(Macrobrachium rosenbergii)不同养殖群体之间的形态差异,应用聚类分析、主成分分析、判别分析等方法比较广东、广西、海南的3个罗氏沼虾养殖群体的全长/体长、剑额长/体长、头胸甲长/体长等15个性状比例参数。各性状的变异系数均在15.000%以上;单因素方差分析结果显示,15个性状比例中,仅第二步足指节长/第二步足长在3个养殖群体中均无显著差异;聚类分析结果显示,广东与海南养殖群体形态差异最小,广西与海南养殖群体形态差异最大,其次是广东与广西养殖群体;经主成分分析得到5个主成分,累计贡献率为75.563%,3个养殖群体的形态学分化主要集中在头胸腹部、体长、第二步足、尾柄的特征上;判别分析得到9个性状比例的判别函数系数,可构建区分3个养殖群体的判别函数,综合判别率达75.900%。以上结果表明,单因素方差分析、聚类分析、主成分分析和判别分析结果基本一致,3个养殖群体间存在较大差异。
For the purpose of comparing the morphological difference among 3 Macrobrachium rosenbergii strains,overall length/body length,swords length/body length,carapace length/body length et al,15 character proportional parameters were analyzed from Guangdong,Guangxi,Hainan by using one-way ANOVA,cluster analysis,component analysis and discriminant analysis.Description statistics found that the variation coefficients were above 15.000%.The one-way analysis of variance revealed that among the 15 character proportional parameters in the study,just pereiopodⅡfinger length/pereiopodⅡlength had no significant differences among the three cultivated populations.The clustering analysis showed the minimal difference between Guangdong and Hainan as well as the maximal difference between Guangxi and Hainan,followed by the Guangdong and Guangxi.Five principal components with an accumulative variance percentage of 75.563%were extracted by principal component analysis and indicated the morphological differences mainly resulting from characters of carapace,abdomen,body length and caudal peduncle.The discriminating functions were established in the 3 cultivated populations by 9 discriminant function coefficient of morphometric characteristics,with the average discriminant accuracy of 75.900%.The one-way ANOVA,cluster analysis,principal component analysis and discriminant analysis suggested the identical results of the diversity among the three cultivated populations.
作者
冯艺
陈文强
杨虹
巫辅达
陈文坚
陈建酬
FENG Yi;CHEN Wenqiang;YANG Hong;WU Fuda;CHEN Wenjian;CHEN Jianchou(The College of Life Science and Engineering,Foshan University,Foshan 528000,China)
出处
《河南农业科学》
CSCD
北大核心
2018年第11期124-129,共6页
Journal of Henan Agricultural Sciences
基金
广东省科技计划项目(2017A020208078)
广东省海洋和渔业专项资金项目(2017A0006)
关键词
罗氏沼虾
形态差异
描述统计
单因素方差分析
聚类分析
主成分分析
判别分析
Macrobrachium rosenbergii
Morphological variation
Descriptive statistics
One-way ANOVA
Cluster analysis
Component analysis
Discriminant analysis
