三亚和北海群体大珠母贝表型性状比较及通径分析  

Comparison and path analysis of phenotypic traits of Pinctada maxima in Sanya and Beihai populations

作　　者：张钰伟 邓正华[1,2] 黄星美 赵旺 温为庚[1,2] 王雨 陈明强[1,2] 于刚 ZHANG Yuwei;DENG Zhenghua;HUANG Xingmei;ZHAO Wang;WEN Weigeng;WANG Yu;CHEN Mingqiang;YU Gang(Tropical Fishery R&D Center,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Sanya 572018,China;Sanya Tropical Fisheries Research Institute,Sanya 572018,China;Tianjin Agricultural University,Tianjin 300384,China)

机构地区：[1]中国水产科学研究院南海水产研究所热带水产研究开发中心,海南三亚572018 [2]三亚热带水产研究院,海南三亚572426 [3]天津农学院,天津300384

出　　处：《中国渔业质量与标准》2023年第4期24-31,共8页Chinese Fishery Quality and Standards

基　　金：海南省重点研发计划项目(ZDYF2021XDNY132);国家重点研发计划(2019YFD0900905);中国水产科学研究院中央级公益性科研院所基本科研业务费专项(2021XT02,2020TD55);国家现代农业产业技术体系专项(CARS-49);中国水产科学研究院南海水产研究所基本科研业务费项目(2020CY01);三亚市农业科技创新项目(2019NK13)。

摘　　要：为确定不同地域野生大珠母贝(Pinctada maxima)外部形态性状对其体质量的影响,分别以海南三亚和广西北海自然海域2龄野生大珠母贝为研究对象,对其外部形态性状壳长、壳高、壳宽和绞合线长及其体质量进行测量统计,并进行相关性、多元逐步回归和通径分析。结果显示,北海群体大珠母贝除了壳宽和体质量,其壳长、壳高和绞合线长的平均值均高于三亚群体;各性状相关系数均达到显著水平(P<0.05)。通径分析结果显示,三亚和北海群体大珠母贝对体质量的直接作用最大的外部形态性状分别为壳宽(0.603)和壳高(0.553)。当以大珠母贝体质量为选育目标时,三亚群体应注重对壳宽的选择;北海群体应注重对壳高的选择。In order to determine the influence of external morphological traits on the body weight in Pinctada maxima,the shell length,shell height,shell width,hinge length,and the body weight of 2-year-old wild P.maxima in Sanya City of Hainan and Beihai City of Guangxi were measured and analyzed by using correlation,multiple stepwise regression and path analysis.The results showed that the mean values of shell length,shell height and hinge length in Beihai population were higher than those in Sanya population except shell width and body weight.The correlation coefficient of each trait reached significant level(P<0.05).The path analysis results showed that the external morphological traits with the greatest direct effect on body weight in Sanya and Beihai populations were shell width(0.603)and shell height(0.553),respectively.When the body weight of P.maxima is taken as the breeding target,the selection of shell width should be emphasized in Sanya population,while shell height should be emphasized in Beihai population.

关 键 词：大珠母贝 外部形态性状 体质量 相关分析 通径分析 

分 类 号：S917.4[农业科学—水产科学]