四川农业大学学报2025，Vol.43Issue(1)：1-8,15,9.DOI:10.16036/j.issn.1000-2650.202406491
四川省主要克氏原螯虾人工养殖群体的形态学特征分析
Analysed Morphological Characterisation of the Predominat Cultivated Procambarus clarkii Populations in Sichuan Province
摘要
Abstract
[Objective]This study aims to elucidate the morphological distinctiveness of the major artifi-cially cultivated populations of Procambarus clarkii in Sichuan Province and lay the foundation for further genetic trait identification.[Method]Morphometric data of P.clarkii populations were collected from six major breeding bases in Sichuan Province.Multivariate statistical analysis was then performed and subse-quently compared with two groups from Qianjiang and Jianli in Hubei Province.[Result]The cumula-tive contribution rate of the three extracted principal components reached 85.229%,with significant load-ing observed in appendage and uropod-related morphological traits such as cheliped length,chela length,second paraeiopod length,fifth second paraeiopod length,fifth step foot length,and uropod width.The combined accuracy of the discriminant function was 68.8%.Cluster analysis revealed that the Neijiang,Daying,Luxian,and Xingwen populations in Sichuan clustered into a single clade with Qianji-ang population in Hubei,while the Nanxi population formed a clade with Jianli.The Qionglai population in Sichuan formed a distinct clade.Furthermore,morphological variation coefficient analysis highlighted significant disparities in the morphology of the carapace,uropod,tail-fan,abdominal,rostrum base,and dactyl carapace among populations of P.clarkii.Eigenvalue analysis further demonstrated notable morphological differences in the carapace,abdominal segments,and cheliped between P.clarkii popula-tions from Hubei and Sichuan Provinces.[Conclusion]The cultivated populations of P.clarkii in Sichuan and Hubei provinces exhibit morphological divergence.Within Sichuan,morphological variations exist among populations from different aquaculture bases,primarily in first abdominal,uropod and tail-fan por-tion.However,these differences do not up to subspecies-level distinctions.Notably,the Qionglai population stands out with its unique morphology,hinting at potentially high breeding significance.关键词
克氏原螯虾/养殖群体/形态差异/多元分析Key words
Procambarus clarkii/cultured population/morphological differences/multivariate analysis分类
生物科学引用本文复制引用
邓常雯,张凯,武佳韵,任莹莹,杨世勇,邵乌云塔娜,杨竣淇,李云坤,杜小刚,冷大勇,冯本伟..四川省主要克氏原螯虾人工养殖群体的形态学特征分析[J].四川农业大学学报,2025,43(1):1-8,15,9.基金项目
四川省自然科学基金青年基金(2022NSFSC1723) （2022NSFSC1723）
国家现代农业产业技术体系四川淡水鱼创新团队·虾鳅育种与推广研究岗位项目 （）
大英县2023年省级财政"鱼米之乡"建设科技服务项目. （）
