| 企鹅珍珠贝（Pteria penguin）主要经济性状对体重的影响效果分析 |
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| 引用本文： | 栗志民,刘志刚,王 辉,唐西岳.企鹅珍珠贝（Pteria penguin）主要经济性状对体重的影响效果分析[J].海洋与湖沼,2011,42(6):798-803. |
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| 作者姓名： | 栗志民 刘志刚 王 辉 唐西岳 |
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| 作者单位： | 广东海洋大学水产学院;广东海洋大学水产学院;广东海洋大学水产学院;广东海洋大学水产学院 |
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| 基金项目： | 热带海产无脊椎动物养殖工程研究中心建设项目, GCZX-A0909 号; 农业部“948”项目“优质南洋珍珠生产关键技术引进与开发利用”, 2010-Z33 号 |
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| 摘 要： | 采用多元线性回归和通径分析方法,研究企鹅珍珠贝主要经济性状对体重的影响效果。结果表明,6个性状间的相关系数均达到极显著水平（P〈0.01）;通径分析表明各经济性状对体重的直接影响效果为软体部重（0.726）〉壳长（0.146）〉壳高（0.107）〉闭壳肌重（0.058）〉壳宽（0.049）,壳长、壳高、闭壳肌重和壳宽对...
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| 关 键 词： | 企鹅珍珠贝 体重 经济性状 相关系数 通径分析 决定系数 |
| 收稿时间： | 2010/5/19 0:00:00 |
| 修稿时间： | 2010/7/21 0:00:00 |
EFFECTS OF MAIN ECONOMIC TRAITS ON BODY WEIGHT OF PTERIA PENGUIN |
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| LI Zhi-Min,LIU Zhi-Gang,WANG Hui and TANG Xi-Yue.EFFECTS OF MAIN ECONOMIC TRAITS ON BODY WEIGHT OF PTERIA PENGUIN[J].Oceanologia Et Limnologia Sinica,2011,42(6):798-803. |
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| Authors: | LI Zhi-Min LIU Zhi-Gang WANG Hui and TANG Xi-Yue |
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| Institution: | Fisheries College of Guangdong Ocean University;Fisheries College of Guangdong Ocean University;Fisheries College of Guangdong Ocean University;Fisheries College of Guangdong Ocean University |
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| Abstract: | Body weight is both an important objective trait and a direct reflection of performance of production for selective breeding. However, body weight variability is often lead to deviation of trait selection; therefore, the purpose of this study is to find breeding objective traits which possess stable phenotype and with greatest correlation to body weight trait. Effects of main economic traits on body weight of Pteria penguin were studies by adopting multiple regression analysis and path analysis. The results showed that the corresponding path coefficients between the 6 main economic traits were highly significant (P<0.01). By path analysis, the direct effects of various economic traits on body weight were edible-part weight (0.726)>shell length (0.146)>shell height (0.107)>adductor weight (0.058)>shell width (0.049). And the economic traits including shell length, shell height, adductor weight, and shell width have indirect effects on body weight through mainly the edible-part weight. Their indirect effects were 0.459, 0.371, 0.431, and 0.462, respectively. The direct determination effects of various economic traits on body weight were edible-part weight (0.527)>shell length (0.021)>shell height (0.011)>adductor weight (0.003)>shell width (0.002). Shell length has the maximum indirect determination effects (0.134) on body weight through the edible-part weight. The shell width, with insignificant partial regression coefficient, was excluded, so the best multiple regression equation, viz. the relation of body weight to shell length (X1), shell height (X2), adductor weight (X3), and edible-part weight (X4) was established as Y =-26.211 + 0.557X1 + 0.257X2 + 0.668X3 + 1.429X4, R2 = 0.921 (P<0.01). |
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| Keywords: | Pteria penguin Body weight Economic trait Correlation coefficient Path analysis Determination coefficient |
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