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引用本文:陈雅琦,梁健,郭永军,李永仁.硬壳蛤形态性状与体质量、软体质量及肥满度的相关性和通径分析[J].海洋科学,2022,46(10):122-128.
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硬壳蛤形态性状与体质量、软体质量及肥满度的相关性和通径分析
陈雅琦, 梁健, 郭永军, 李永仁
天津农学院水产学院, 天津市水产生态及养殖重点实验室, 天津 300384
摘要:
为研究硬壳蛤形态性状对体质量(Y)、软体质量(Y1)及肥满度(K)的影响,测量硬壳蛤的壳长(X1)、壳宽(X2)、壳高(X3)、体质量(Y)和软体质量(Y1)等指标,并进行相关性分析、多元回归分析和通径分析。结果表明:体质量变异系数最高,壳宽与体质量相关系数最高(0.970)、壳长与软体质量相关系数最高(0.946)、壳长与肥满度相关系数最高(0.203)。壳宽对体质量直接作用最大(0.145)、壳长对软体质量直接作用最大(1.113)、壳长对肥满度直接作用最大(1.752)。形态性状与体质量、软体质量及肥满度的多元回归方程分别为Y=–46.359+0.288X1+1.723X2+0.640X3,R2=0.949;Y1=–6.607+0.301X1+0.157X2–0.161X3,R2=0.901;K=3.159+0.173X1+0.008X2–0.179X3,R2=0.072。壳宽是影响硬壳蛤体质量的主要因素,壳长是影响硬壳蛤软体质量的主要因素,各性状与肥满度回归关系不显著,个体间肥满度差异大。研究结果可为硬壳蛤选育及苗种繁育提供参考。
关键词:  硬壳蛤  形态性状  体质量  相关性分析  通径分析
DOI:10.11759/hykx20211016002
分类号:X834
基金项目:国家重点研发计划项目(2018YFD0901404);天津市海水养殖产业技术体系创新团队项目(ITTMRS2021003);现代农业产业技术体系建设专项资金项目(CARS49);天津市科技计划项目(21ZYCGSN00350)
Correlation and path analysis between morphological traits and body weight, soft body weight, and plumpness of Mercenaria mercenaria
CHEN Ya-qi, LIANG Jian, GUO Yong-jun, LI Yong-ren
Tianjin Key Laboratory of Aqua-ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
Abstract:
To study the effects of morphological traits of Mercenaria mercenaria on Y, Y1, and K, the shell length, shell width, shell height, weight, and soft weight of Mercenaria mercenaria were measured. Furthermore, correlation analysis, multiple regression analysis, and path analysis were conducted. The results demonstrated that the largest coefficient of variation was weight, the largest correlation coefficient between morphological traits and weight was shell width (0.970), the largest correlation coefficient with soft weight was shell length (0.946), and the largest correlation coefficient with plumpness was shell length (0.203). The most direct effect of morphological traits on weight was, namely, shell width (0.145), shell length (1.113), and shell length (1.752). The multiple regression equation between morphological traits and weight was Y = -46.359 + 0.288 X1 + 1.723 X2 + 0.640 X3, R2 = 0.949; the multiple regression equation with soft weight is Y1 = -6.607 + 0.301 X1 + 0.157 X2 - 0.161 X3, R2 = 0.901; the multiple regression equation with plumpness is K = 3.159 + 0.001 173 X1 + 0.008 X2 - 0.179 X3, R2 = 0.072. Shell width was found to be the principal factor affecting the weight of Mercenaria mercenaria, whereas shell length was determined as the chief factor affecting the soft weight of Mercenaria mercenaria. The regression relationship between morphological traits and plumpness was not found to be significant, and there were substantial differences in plumpness among individuals. The research concluded that results can be used as a reference for case studies in variety breeding and seedling breeding of Mercenaria mercenaria.
Key words:  Mercenaria mercenaria  morphological traits  weight  correlation analysis  path analysis
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