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中国农学通报 ›› 2025, Vol. 41 ›› Issue (35): 140-146.doi: 10.11924/j.issn.1000-6850.casb2024-0745

• 水产·渔业 • 上一篇    下一篇

马氏珠母贝不同选育群体形态性状与软体部质量关系的通径分析

李思云(), 杨创业, 廖永山, 李俊辉(), 邓岳文   

  1. 广东海洋大学水产学院,广东湛江 524088
  • 收稿日期:2024-12-09 修回日期:2025-03-24 出版日期:2025-12-11 发布日期:2025-12-11
  • 通讯作者:
    李俊辉,女,1976年出生,高级实验师,研究方向:海洋无脊椎动物增养殖。通信地址:524088 广东省湛江市麻章区湖光岩东海大路1号 广东海洋大学,E-mail:
  • 作者简介:

    李思云,女,2000年出生,硕士研究生,研究方向:海水贝类增养殖。通信地址:524088 广东省湛江市麻章区湖光岩东海大路1号 广东海洋大学,E-mail:

  • 基金资助:
    国家现代农业产业贝类技术体系“海水珍珠贝养殖与育珠岗位专项”(CARS-049)

Path Analysis of Relationship Between Phenotypic Traits and Soft Body Weight Among Three Lines of Pearl Oyster Pinctada fuctada martensii

LI Siyun(), YANG Chuangye, LIAO Yongshan, LI Junhui(), DENG Yuewen   

  1. Fishery College, Guangdong Ocean University, Zhanjiang, Guangdong 524088
  • Received:2024-12-09 Revised:2025-03-24 Published:2025-12-11 Online:2025-12-11

摘要:

本研究旨通过通径分析探究马氏珠母贝3个选育群体(越南子一代群体、黑色放射肋品系、对照养殖群体)形态性状与体质量之间的关系,建立以软体部质量为因变量、主要形态性状为自变量的多元线性回归方程,为培育具有马氏珠母贝高出肉率品系提供理论依据。于2023年12月,分别从3个选育群体中各随机抽取300个个体,测量其壳高(SH)、壳长(SL)、壳宽(SW)、绞合线长(TWL)、活体重(LW)和软体部重(MW)。以壳型表型性状作为自变量、软体部重作为因变量,计算各性状间的相关系数、直接通径系数和间接通径系数。结果显示,在3个选育群体中,壳高、壳长、壳宽、绞合线长、活体重与软体部质量呈极显著正相关(P<0.01)。通径分析表明,活体重对软体部质量的直接影响在3个群体中均最为显著。利用逐步回归分析法,建立了3个群体的最优多元回归方程:越南子一代群体为Y=-2.973+0.034XSH-0.043XTWL+0.235XLW;黑色放射肋群体为Y=-0.505+0.253XLW+0.037XSW;对照养殖群体为Y=-5.557+0.094XSH+0.265XLW。本研究证明活体重是影响马氏珠母贝软体部质量的最关键直接因素,为培育马氏珠母贝新品系提供了重要依据。

关键词: 马氏珠母贝, 选育群体, 形态性状, 软体部质量, 通径分析

Abstract:

The study analyzed the morphological traits and body weight of the three lines of pearl oyster Pinctada fuctada martensii, and established the linear equation with the soft body weight and the main target traits, with an aim to provide useful information for the breeding of the species. The three lines were involved in the progeny stock with breeders introduced from Vietnam, the line with black radiating rib as morphological marker in the shell surface, and the control stock. In December 2023, 300 samples were collected from each of three lines. Shell height (SH), shell length (SL), shell width (SW), stranded line length (TWL), live total weight (LW) and soft body weight (MW) of each sample was measured, and the correlation coefficient between traits were estimated. The correlation coefficients between each trait were calculated with the shell phenotypic trait as the independent variable and the soft body weight as the dependent variable. The direct path coefficient and the indirect path coefficient between each trait were also calculated. The results showed that shell height, shell length, shell width, stranded line length, total weight and soft body weight of the three strains were highly significant correlated (P<0.01). All three strains had the largest direct effect of total weight on soft body weight. Three multiple regression equations were established by using stepwise regression analysis. The regression equations of progeny stock with breeders introduced from Vietnam, the line with black radiating rib as morphological marker in the shell surface, and the control stock were Y=-2.973+0.034XSH-0.043XTWL+0.235XLW, Y=-0.505+0.253XLW+0.037XSW, and Y=-5.557+0.094XSH+0.265XLW, respectively. The results show that total weight is the most important factor affecting the quality of soft body weight, which is helpful for the cultivation of the lines with larger soft body weight.

Key words: Pinctada fuctada martensii, selected lines, morphological traits, soft body weight, path analysis