半滑舌鳎3个形态性状与体质量的相关及通径分析

刘峰; 陈松林; 刘肖峰; 刘洋; 崔忠凯; 邓寒

doi:10.3969/j.issn.0253-4193.2015.04.009

半滑舌鳎3个形态性状与体质量的相关及通径分析

doi: 10.3969/j.issn.0253-4193.2015.04.009

1.
中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室, 山东青岛 266071;上海海洋大学水产与生命学院, 上海 201306
2.
中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室, 山东青岛 266071
3.
中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室, 山东青岛 266071;中国海洋大学海洋与生命学院, 山东青岛 266000

基金项目: 国家863项目(2012AA10A403-2);山东省泰山学者建设工程专项资助.

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出版历程
- 收稿日期: 2014-04-30
- 修回日期: 2014-06-06

Correlation and path coefficient analysis for body mass and three morphometric traits in the half-smooth tongue sole

1.
Key Lab for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
2.
Key Lab for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
3.
Key Lab for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;School of Marine Life Sciences, Ocean University of China, Qingdao 266003, China

摘要

摘要: 为了深入认识半滑舌鳎形态性状与体质量之间的关系,本研究使用831尾12月龄左右半滑舌鳎个体的体质量[BM(g)]和形态性状,包括全长[TL(cm)]、体高[BH(cm)]、体厚[BW(cm)],通过模型拟合筛选获得能够反映雌、雄性个体各个形态性状与体质量关系的最佳模型.建立了以形态性状为自变量、体质量作为因变量的回归方程,并计算了直接、间接通径系数和决定系数.模型拟合结果显示,雌、雄个体全长、体高和体厚与体质量的最优拟合模型都为幂函数曲线模型,雌性个体3个形态性状与体质量的最优模型分别为: ŷ =0.004x^3.090、ŷ =0.382x^2.983、ŷ =61.912x^2.461;雄性个体的3个最优模型公式依次为:ŷ =0.005x^3.003、ŷ =0.300x^3.147、ŷ =57.681x^2.156.通径分析结果显示,雌性个体中体高对体质量的直接影响最大,通径系数为0.535,而雄性个体全长对体质量的直接作用最大,通径系数为0.407.雌、雄个体的3个形态性状对体质量都有极显著的直接作用,其最优多元回归方程:雌性为BM=-88.530+1.297TL+15.862BH+39.021BW;雄性为BM=-71.579+2.587TL+7.351BH+35.595BW.
- 半滑舌鳎 /
- 形态性状 /
- 模型拟合 /
- 相关系数 /
- 通径系数
Abstract: In order to know the relationship between body mass and morphometric traits in the half smooth tongue sole (Cynoglossus semilaevis),body mass [BM(g)] and three morphometric traits,e.g.,total length [TL(cm)],body height [BH(cm)] and body width [BW(cm)] of 831 individuals of 12 months old Cynoglossus semilaevis were measured in this study. The best models for female and male individuals reflecting the relationship between each morphometric trait and body mass were obtained through model fitting screening,respectively. We established the regression equation with morphological traits as variables and body mass as the dependent variable and calculated the direct and indirect path coefficient and the coefficient of determination. The results showed that the best model fitted for female individuals was ŷ =0.004x^3.090 for TL-BM, ŷ =0.382x^2.983 for BH-BM and ŷ =61.912x^2.461 for BW-BM. And for male animals,they were ŷ =0.005x^3.003 for TL-BM, ŷ =0.300x^3.147 for BH-BM and ŷ =57.681x^2.156 for BW-BM. Path analysis showed that BH was the most predominant variable to affect BM (0.535) in females,while TL was the largest effect to BM (0.407) in males. Three morphological traits of female and male individuals were all extremely remarkable effects on the body mass. The multiple linear regression model equation were established as BM=-88.530+1.297TL+15.862BH+39.021BW for females,and BM=-71.579+2.587TL+7.351BH+35.595BW for males.
- Cynoglossus semilaevis /
- morphometric traits /
- model fitting /
- correlation coefficient /
- path coefficient

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