不同地理群体文蛤形态及碳氮含量的差异分析  

Differences in Morphology and Carbon and Nitrogen Contents of Venus Clam Meretrix meretrix from Different Geographical Populations

作　　者：刘伟 胡清彪 梅杰 冯加岭 马民 李晓东 LIU Wei;HU Qingbiao;MEI Jie;FENG Jialing;MA Min;LI Xiaodong(College of Fisheries and Life Science,Dalian Ocean University,Dalian 116023,China;College of Animal Science and Medicine,Shenyang Agricultural University,Shenyang 110866,China;National Field Scientific Observation and Research Station of Panjin Wetland Ecosystem,Shenyang 110866,China;Panjin Guanghe Crab Industry Co.,Ltd.,Panjin 124200,China)

机构地区：[1]大连海洋大学水产与生命学院,辽宁大连116023 [2]沈阳农业大学动物科学与医学学院,辽宁沈阳110866 [3]辽宁盘锦湿地生态系统国家野外科学观测研究站,辽宁沈阳110866 [4]盘锦光合蟹业有限公司,辽宁盘锦124200

出　　处：《水产科学》2024年第5期737-745,共9页Fisheries Science

基　　金：辽宁省海洋经济发展专项(1638925894383);沈阳农业大学高层次人才项目(880416005).

摘　　要：为探究不同地理群体文蛤形态差异及碳氮含量的差异分析,采集了山东滨州、江苏如东、辽宁蛤蜊岗3个地理群体的文蛤180枚,测量壳长、壳宽、壳高等9个性状,进行相关性分析、通径分析、多元回归分析探究形态性状对体质量影响效果,并进行了文蛤碳氮含量差异分析,贝壳和软体组织碳氮含量与形态性状及体质量的相关性分析。试验结果显示,3个地理群体中大部分形态性状与体质量呈显著性相关(P<0.05),壳宽与体质量相关性最高,分别为0.919、0.640、0.696。山东滨州群体软体碳含量与小月面长呈显著性相关(P<0.05),辽宁蛤蜊岗群体软体氮含量与壳高呈极显著性相关(P<0.01)。基于通径分析和决定系数分析,壳宽、壳长、壳高分别是影响山东滨州、江苏如东、辽宁蛤蜊岗群体文蛤体质量的主要形态性状。通过检验偏回归系数的显著性,建立了3个群体形态性状对体质量的最优回归方程,辽宁蛤蜊岗地理群体文蛤壳和文蛤软体组织的固碳能力高于山东滨州和江苏如东群体。本试验探讨了文蛤不同地理群体形态性状对体质量性状的影响及文蛤贝壳和软体碳氮含量差异,结果可为文蛤地理群体的形态判别、种质资源分析和低碳可持续渔业研究等提供参考。In order to explore the differences in morphology and carbon and nitrogen contents of different geographical populations of venus clam Meretrix meretrix,morphological traits including shell length,shell width and shell height were measured in 180 sample of venus clam collected from Binzhou,Shandong(E 118°02',N 37°22'),Rudong,Jiangsu(E 121°18',N 32°33')and Geli-gang,Liaoning(E 121°97',N 40°80'),and the correlation was analyzed between carbon and nitrogen contents of shell and soft tissue and morphological traits and body weight by correlation analysis,path analysis and multiple regression analysis.The results showed that there were high proportion of carbon and nitrogen contents in most of the clam in the three geographic populations,with high proportion of carbon and nitrogen contents in the shell and mollusk tissues.The most morphological traits were shown to be significantly correlated with body weight in the three geographic populations(P<0.05),with the maximal correlation of shell width with body weight,with correlation coefficient of 0.919,0.640,and 0.696,respectively(P<0.01).The pass analysis and coefficient of determination analysis revealed that shell width,shell length,and shell height were the main morphological traits affecting the body weight of clams in Binzhou,Rudong,and Geli-gang populations,respectively.By testing the significance of partial regression coefficients,the optimal regression equations of morphological traits on body weight in the three groups were established,and the carbon sequestration capacity of clam shell and clam soft tissues was higher in the geographic group of Geli-gang in Liaoning than that in the groups of Binzhou in Shandong and Rudong in Jiangsu.The findings provide references with morphological discrimination of geographic populations of the clam,analysis of germplasm resources and research on low-carbon sustainable fisheries.

关 键 词：文蛤 形态性状 碳氮含量 通径分析 

分 类 号：S968.31[农业科学—水产养殖]