东极厚壳贻贝养殖群体表型性状的相关与通径分析
2015-10-21陆雅凤赵晟徐梅英吴常文
陆雅凤 赵晟 徐梅英 吴常文



摘要 [目的]为厚壳贻贝的选育工作提供理论指导。[方法]选取浙江省舟山市东极养殖区的厚壳贻贝作为研究对象,分别测量壳长(SL)、壳宽(SW)、壳高(SH)等10个形态性状以及总体重(GW)、壳重(KW)和软体重(RW)这3个重量性状,采用相关分析、多元回归分析和通径分析等方法探讨了形态性状对重量性状的影响。 [结果]所测的表型性状之间均达到显著相关(P<0.05),相关系数为0.233~0.975。建立了形态性状与总体重、壳重和软体重的回归方程,分别为GW=-34.511+10.058SH+5.844SW+2.121OC (R2=0771);KW= -8.209+4.482SH+2.082SW (R2=0.771);RW= -9.549+2.274SH+1.648SW+1.025CD (R2=0.625)。[结论] 东极养殖区厚壳贻贝的人工选育可以壳高为选择目标,重视对壳宽的协同选择。
关键词 厚壳贻贝;形态性状;相关分析;通径分析;多元回归
中图分类号 S944.4+2 文献标识码 A 文章编号 0517-6611(2015)03-147-04
Correlation Analysis and Path Analysis on the Morphological Traits of Mytilus coruscus Population in Dongji Culture Region
LU Yafeng, ZHAO Sheng, XU Meiying, WU Changwen*
(National Engineering Research Center for Mariculture Facilities, Zhejiang Ocean University,Zhoushan,Zhejiang 316022)
Abstract [Objective] The research aimed to provide theoretical basis for the breeding of Mytilus coruscus. [Method] Selecting Mytilus coruscus in Dongji culture region as the research objects, ten morphological traits (including shell length, shell width, shell height and so on) and 3 weight traits(total weight, shell weight and tissue weight) of M. coruscus were measured. The effects of morphological traits on the weight traits were discussed by using correlation analysis, multiple regression analysis, path analysis and path analysis. [Result] There were significant correlations among 13 measured phenotypic traits(P<0.05), and the correlation coefficient ranged from 0.233 to 0.975. The regression equations between total weight(GW), shell weight (KW)and tissue weight(RW) and morphological traits of M. coruscus were as follows: GW=-34.511+10.058SH+5.844SW+2.121OC(R2=0.771); KW=-8.209+4.482SH+ 2.082 SW (R2=0.771); RW= -9.549+2.274SH+1.648SW+1.025CD(R2=0.625). [Conclusion] The shell height could be used as the selection target in the artificial breeding of M. coruscus in Dongji culture region, and its coselection with the shell width should be emphasized.
Key words Mytilus coruscus; Morphological traits; Correlation analysis; Path analysis; Multiple regression
基金项目 国家科技部科技支撑计划项目(2012BAB16B02);国家海洋局海洋公益性行业科研专项项目(201305009-3);浙江省本科院校中青年学科带头人学术攀登项目(pd2013223)。
作者简介 陆雅凤(1991- ),女,江苏扬州人,硕士研究生,研究方向:安全养殖技术。
*通讯作者,教授,博士,博士生导师,从事养殖工程技术研究。
收稿日期 20141125
厚壳贻贝(Mytilus coruscus)隶属软体动物门、瓣鳃纲、异柱目、贻贝科、贻贝属,俗称海红,其干制品称为淡菜,是一种近海、岛礁和内海的温水性双壳类软体动物,在我国主要分布在黄海、渤海和东海沿岸,其粗生易养,肉质鲜美,营养丰富,是我国目前贝类养殖中重要的品种之一[1]。厚壳贻贝不仅具有经济价值,还具有生态价值,其可以通过碳酸钙泵固定碳,即直接吸收海水中的碳酸氢根(HCO-3)形成碳酸鈣(CaCO3)进行碳汇,可以根据其贝壳的质量和贝类中的总碳量进行估算碳汇量,对于减少大气中温室气体含量和缓解全球气候变化具有重要意义[2-4]。……
