杂交黄颡鱼体色分化群体形态差异分析  

Analysis of Morphological Differences between Differential Body Colors Groups of Hybrid Yellow Catfish

作　　者：周华兴[1] 段国庆[1] 胡玉婷[1] 汪焕 江河[1] 凌俊[1] 潘庭双[1] 陈小雷[1] ZHOU Huaxing;DUAN Guoqing;HU Yuting;WANG Huan;JIANG He;LING Jun;PAN Tingshuang;CHEN Xiaolei(Anhui Key Laboratory of Aquaculture and Stock Enhancement,Fisheries Research Institution,Anhui Academy of Agricultural Sciences,Hefei 230031,China)

机构地区：[1]安徽省农业科学院水产研究所,水产增养殖安徽省重点实验室,安徽合肥230031

出　　处：《水产科学》2021年第5期726-732,共7页Fisheries Science

基　　金：安徽省科技重大专项(17030701003);安徽省水产产业技术体系项目(皖农科[2016]84号);安徽省重点研发项目(202004a06020063);安徽省农业科学院创新团队项目(2020YL039).

摘　　要：对黄颡鱼(♀)和瓦氏黄颡鱼(♂)的苗种期子代两个体色分化群体的26个可量性状进行统计和测定,采用单因素方差分析、判别分析、主成分分析和聚类分析等方法对测量数据进行统计分析。分析结果表明,除了体色上的分化,两个群体的杂交黄颡鱼在脂鳍末端到尾鳍基的距离、尾柄长、眼径、眼间距、背刺长、胸刺长等特征上出现分化。不同形态特征间存在显著的相关性。通过形态学特征聚类可区分两个群体,其中尾柄长/体长(C_(8))和眼径/头长(C_(17))性状为两个群体间判别力最高的性状,以此推导判别公式:黄色群体=0.933C_(8)+65.755C_(17)-14.754,黑色群体=7.744C_(8)+33.086C_(17)-10.416。本试验为杂交黄颡鱼性状分化群体的鉴定及良种选育提供依据。In this study,26 measurable traits were measured in two differential groups of hybrid yellow catfish Pelteobagrus fulvidraco ♀×P.vachellii ♂ in order to analyze the morphological differences between two groups.Subsequent comparative analyses of the morphological characteristics were performed using the one-way analysis of variance,discriminant analysis,principal component analysis and cluster analysis.The results showed that 6 traits including adipose-caudal fin distance,caudal peduncle length,eye diameter,interorbital width,dorsal-fin spine length and pectoral-fin spine length were segregated significantly.Almost all individuals were divide into two groups using cluster analysis based on the morphological characters.The corrected eye diameter and caudal peduncle length were the most discriminative traits to differentiate these two groups.Significant negative correlation between caudal peduncle length and spine length was detected and significant positive correlation between eye diameter and interorbital width was detected.We inferred that the coevolution between different traits was of importance for the adaptation of yellow catfish.The finding provides novel insights into the breeding and identification of hybrid yellow catfish.

关 键 词：杂交黄颡鱼 体色分化 形态差异 多元统计分析 

分 类 号：Q959.4[生物学—动物学]