上海海洋大学学报2024，Vol.33Issue(1)：67-76,10.DOI:10.12024/jsou.20221104012
不同规格中华绒螯蟹成蟹的形态特征和组织系数比较
Morphological characters and tissue indices of adult Chinese mitten crabs(Eriocheir sinensis)with different body mass
摘要
Abstract
To investigate the relationship between morphological characters and body mass of adult Chinese mitten crabs Eriocheir sinensis,19 morphological characters were measured and compared among E.sinensis with different body weights by quantitative and multivariate analysis,and the hepatopancreas index(HSI),gonadosomatic index(GSI),meat yield(MY)and total edible yield(TEY)of these crabs were compared either.The results showed that:(1)There were 13 and 1 1 significantly different characteristics detected in male and female E.sinensis respectively,and the values of morphological characteristics related to the length of carapace significantly increased with E.sinensis body weights increasing,but the values related to carapace width and feet length significantly decreased with E.sinensis size body weights increasing.(2)The results of principal component analysis(PCA)revealed that the polts represents different-sized individuals were relatively separated with only a slight overlap between group,indicating a quite different morphology of the individuals with different sizes.(3)Significant difference were detecte in tissue indices among different-sized crabs,and the larger crabs(Male≥300 g;Female≥150 g)had significantly lower values of GSI but significantly higher values of HSI,MY and TEY than the smaller ones.All in all,different-sized E.sinensis had significant differences in morphological characteristics and tissue indices,and they showed a significant negative correlation with GSI,which would provide a valuable reference for commercial and broodstock crabs selection.关键词
中华绒螯蟹/不同规格/形态学特征/组织系数/回归分析Key words
Chinese mitten crab/different body mass/morphological characteristics/tissue indices/regression analysis分类
农业科技引用本文复制引用
解志龙,姜晓东,范陈伟,荆晶,成永旭,吴旭干..不同规格中华绒螯蟹成蟹的形态特征和组织系数比较[J].上海海洋大学学报,2024,33(1):67-76,10.基金项目
科技部蓝色粮仓项目(2018YFD0900103) （2018YFD0900103）
国家现代农业产业技术体系专项(CARS-48) （CARS-48）
上海市崇明区"可持续发展科技创新行动计划"项目(CK2022-37) （CK2022-37）
浙江省长兴县科技局2021年度"揭榜挂帅"农业科技攻关项目(2022N13) （2022N13）
