Identification of "Bathed" Chinese Mitten Crabs (Eriocheir sinensis) Using Geometric Morphological Analysis of the Carapace
文献类型： 外文期刊
作者： Xu, Yiqian 1 ; Xue, Junren 2 ; Liu, Hongbo 1 ; Jiang, Tao 2 ; Chen, Xiubao 2 ; Yang, Jian 1 ;
作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fishery Res Ctr, Lab Fishery Microchem, Wuxi 214081, Peoples R China
关键词： Eriocheir sinensis; landmark; geometric morphometrics; "introduced"/"bathed" crab; discriminant analysis; aquaculture
期刊名称：FISHES （ 影响因子：2.3； 五年影响因子：2.4 ）
ISSN：
年卷期： 2024 年 9 卷 1 期
页码：
收录情况： SCI
摘要： To confirm whether Chinese mitten crabs (Eriocheir sinensis), commonly known as hairy crabs or river crabs, in non-Yangcheng Lake areas undergo morphological convergence with the original crabs in the Yangcheng Lake purse seine and high-standard modified aquaculture ponds after being "introduced" or "bathed"-cultured, we employed a geometric morphometrics approach. This approach allowed us to compare and analyze the dynamic changes in the carapace morphology of both the original and "introduced" crabs in Yangcheng Lake and high-standard ponds in Kunshan City at 0, 7, 14, and 30 days after "bathing" culture. The geometric morphological analysis of the carapace was conducted using a system of 35 established landmarks. The stepwise discriminant analysis of the relative distortion score revealed morphological differences between "introduced" and resident original crabs in the Yangcheng Lake area and in high-standard modified ponds after 7, 14, and 30 days of bathing culture. The accuracy of the discriminant analysis was 100%. The results of the geometric morphological visualization demonstrated that the carapaces of the bathed crabs underwent adaptive changes in the water. However, even after one month of bathing culture, the "introduced" crabs in lakes and ponds could not reach the morphological characteristics of the original crabs, i.e., their carapaces did not exhibit the characteristics of the original crabs.
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