首页> 中文期刊> 《水产学杂志》 >黑斑狗鱼形态性状对体重的影响效果分析

黑斑狗鱼形态性状对体重的影响效果分析

         

摘要

The relationship between morphometric attributes and body weight ofEsox reichrti Dyhowsk were analyzed on the basis of the measurement of 13 morphometric attributes form 332 E. reichrti in this study. Total length(X1), standard length(X2), head length(X3), snout length(X4),body width(X5), head width(X6), interorbital distance(XT), body depth(Xs), head depth(Xg), caudal peduncle depth(X10), caudal peduncle length (X11), oral fissure width (X10), oral fissure length (Xn)and body weight (Y) were measured. The correlation coefficients and path coefficients were calculated by correlation analysis, path analysis and multiple regression analysis. The results showed that all the correlation coefficients between each independent variable and dependent variable (body weight) were all at significant level (P〈0.05) or extremely significant level (P〈0.01) excepting for the correlation coefficients between head length and body weight of 0^+ years old. There were some differences on path coefficients of Esox reichrti from different years old. While the pathcoefficients of standard length and head depth to body weight all achieved very significant level (P〈0.01), among them standard length was the most predominant variable to affect body weight, and it was a key effective factor to body weight. The results of determinant coefficients analysis revealed that the determinant coefficients of standard length gave a predominant determinative effect, whereas the others exhibited a slight direct effect and significant indirect effect on the body weight via standard length. The diversification of determinant coefficients analysis was consistent with that of path analysis. The high value of multiple correlation index R2 〉0.85 between morphometric attributes and body weight suggested that the selected attributes were practical. The morphometric attributes were used to establish the multiple regression equations as LgY = -1.411 + 0.395Lg X8 + 0.576Lg X1 + 0.092Lg X10+ 0.538Lg X7+ 0.35Lg X6;LgY = -4.132 + 0.866Lg X1 + 0.102Lg X12 + 0.083Lg X7;LgY -4.186 + 0.772Lg Xj + 0,195Lg X7;LgY = -2.542 + 0.372Lg X1 + 0.185Lg X3 + 0.256Lg X5+ 0.23Lg X7;LgY =-4.585 + 0.816Lg X1 + 0.178Lg X7 for 0+ to 4+years old. This paper provided theoretical evidence and perfect measure target for breeding of E. reichrti in aquaculture.%选取0^+龄~4^+龄黑斑狗鱼332尾,对其体长、体高、体宽、尾柄长、尾柄高、头长、头高、头宽、吻长、眼间距、口裂宽、口裂长和体重等13个性状进行测量。采用多元分析法分析体重和形态形状的关系。结果表明,黑斑狗鱼除0^+龄头长与体重之间的相关系数未达到显著水平(P〉0.05)外,其它各形态性状与体重的相关系数均达到显著水平(P〈0.05)或极显著水平(P〈0.01);经通径分析,不同年龄阶段各形态性状对体重的通径系数存在一定的差异,但体长和头高对体重的通径系数均达到显著水平,而且体长对体重的直接作用均最大,

著录项

  • 来源
    《水产学杂志》 |2011年第2期|26-30|共5页
  • 作者单位

    中国水产科学研究院黑龙江水产研究所,农业部黑龙江流域渔业资源与环境重点野外科学观测试验站,黑龙江哈尔滨150070;

    哈尔滨市农业科学院水产研究分院,黑龙江哈尔滨150078;

    环境保护部环境规划院,北京100012;

    中国水产科学研究院黑龙江水产研究所,农业部黑龙江流域渔业资源与环境重点野外科学观测试验站,黑龙江哈尔滨150070;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 淡水鱼;
  • 关键词

    黑斑狗鱼; 形态性状; 相关分析; 通径分析; 多元回归方程;

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