4月龄豹纹鳃棘鲈形态性状对体质量的影响分析  

Mathematical analysis of morphometric attributes effects on body mass for four-month-old Plectropomus leopardus

作　　者：虞为[1,2,3] 林黑着 马振华[1,3] 吴洽儿 陈雪晴[4] 杨育凯[1,2] 黄小林 黄忠[1,2] 赵旺 李涛[1,2] 周传朋 YU Wei;LIN Heizhao;MA Zhenhua;WU Qia'er;CHEN Xueqing;YANG Yukai;HUANG Xiaolin;HUANG Zhong;ZHAO Wang;LI Tao;ZHOU Chuanpeng(South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Key Laboratory of South China Sea Fishery Resources Exploitation Utilization,Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment,Guangzhou 510300,China;Shenzhen Base of South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shenzhen 518121,China;Tropical Aquaculture Research and Development Center,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Sanya 572018,China;School of Life Science,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]中国水产科学研究院南海水产研究所/农业农村部南海渔业资源开发利用重点实验室/广东省渔业生态环境重点实验室,广东广州510300 [2]中国水产科学研究院南海水产研究所深圳试验基地,广东深圳518121 [3]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 [4]广州大学生命科学学院,广东广州510006

出　　处：《南方水产科学》2022年第6期146-151,共6页South China Fisheries Science

基　　金：海南省科技专项资助(ZDYF2022XDNY349);海南省自然科学基金项目(321QN0942);中国水产科学研究院基本科研业务费专项资金(2020TD55);亚洲合作资金项目“中国与南海周边国家现代渔业合作”;广东省现代农业产业技术体系创新团队建设专项资金(2019KJ149,2019KJ143)。

摘　　要：摸清豹纹鳃棘鲈(Plectropomus leopardus)形态性状与体质量的关系对其选育工作具有重要意义。以同一批次159尾4月龄豹纹鳃棘鲈为试验对象,测量并探寻其形态性状对体质量的影响效应。结果表明,豹纹鳃棘鲈吻长与体质量的相关性为显著水平(P<0.05),其余形态性状与体质量的相关性均为极显著水平(P<0.01);通径分析结果发现,体长、体高、体宽、头高和吻长是影响4月龄豹纹鳃棘鲈体质量的主要形态性状,其中体高主要是通过直接作用影响体质量,而体长、体宽和头高则主要通过体高间接影响体质量;体长、体高、体宽、头高和吻长性状对体质量的共同决定系数之和大于0.85,说明4月龄豹纹鳃棘鲈体质量主要受这5个性状影响。通过回归分析建立多元回归方程,剔除与体质量相关性不显著的形态性状,所得方程保留的形态指标与通径分析结果一致。To understand the relationship between the morphological traits and the body mass of coral trout(Plectropomus leopardus)is important for its breeding.In this study,we selected 159 individuals of the same batch of 4-month-old P.leopardus juveniles as the experimental objects to explore the correlation between the eleven morphological traits and body mass.The results show that there were significnat correlation between snout length(x9)and body mass(P<0.05),and extremely significant correlation between the other ten morphological traits and body mass.The results of path analysis reveals that the standard length(x2),body depth(x4),body width(x5),head height(x7),snout length(x9)were the main decisive morphological traits on body mass.The direct effect coefficient of body depth on body mass was 0.444,indicating that body depth mainly affected body mass through direct action.However,the other morphological traits mainly affected body mass indirectly via body depth.The total decision coefficient of five morphological traits on body mass was 0.853,indicating that these morphological traits were the main factors affecting body mass.After eliminating the morphological traits with insignificant coefficient to body mass,we established the multiple regression equation by multiple regression analysis.The morphological traits retained by the multiple regression analysis were consistent with that by path analysis.

关 键 词：豹纹鳃棘鲈 形态性状 体质量 通径分析 

分 类 号：S965.332[农业科学—水产养殖]