Differences in Morphology and Carbon and Nitrogen Contents of Venus Clam Meretrix meretrix from Different Geographical Populations
LIU Wei1, HU Qingbiao2,3, MEI Jie2, FENG Jialing4, MA Min4, LI Xiaodong1,2,3,4
1. College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China; 2. College of Animal Science and Medicine, Shenyang Agricultural University, Shenyang 110866, China; 3. National Field Scientific Observation and Research Station of Panjin Wetland Ecosystem, Shenyang 110866, China; 4. Panjin Guanghe Crab Industry Co., Ltd., Panjin 124200, China
Abstract：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.
刘伟, 胡清彪, 梅杰, 冯加岭, 马民, 李晓东. 不同地理群体文蛤形态及碳氮含量的差异分析[J]. 水产科学, 2024, 43(5): 737-745.
LIU Wei, HU Qingbiao, MEI Jie, FENG Jialing, MA Min, LI Xiaodong. Differences in Morphology and Carbon and Nitrogen Contents of Venus Clam Meretrix meretrix from Different Geographical Populations. Fisheries Science, 2024, 43(5): 737-745.
2024, Vol. 43 
