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| 基于图像识别的5个不同产地克氏原螯虾(Procambarus clarkii)形态差异分析 |
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田灿1, 李飞2, 苏胜彦1,3, 唐永凯3, 刘波3, 俞菊华3,4, 于凡3, 李建林3, 李红霞3, 宋长友3, 王美垚3
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1.上海海洋大学 水产科学国家级实验教学示范中心 上海 201306;2.农业农村部淡水渔业健康养殖重点实验室 浙江省淡水水产遗传育种重点实验室 浙江省淡水水产研究所 湖州 313001;3.中国水产科学研究院淡水渔业研究中心 农业农村部淡水渔业与种质资源利用重点实验室 无锡 214081;4.1. 上海海洋大学 水产科学国家级实验教学示范中心 上海 201306
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| 摘要: |
| 为了解江苏、江西、湖北、上海、河南5个地区克氏原螯虾（Procambarus clarkii）的形态差异和获取快速、有效的形态鉴别方法，本研究采用传统形态测量法和地标点法来分析各产地形态差异。结果显示：（1）克氏原螯虾雌雄群体相对扭曲主成分分析，前三个主成分累计贡献率分别为79.96%、67.21%，传统形态测量法前三个主成分累计贡献率分别为76.77%、82.70%，两种方法均表明其形态差异主要体现在头胸甲及腹部部位；（2）聚类分析将克氏原螯虾5群体聚为两支，上海、河南、江西、湖北群体聚为一支，江苏群体单独聚为一支。（3）地标点法雌雄群体综合判别准确率分别为100%、94%，传统形态测量法综合判别准确率均为56%。以上研究结果表明不同产地间克氏原螯虾具有一定的形态差异，且地标点法区分不同产地克氏原螯虾群体差异性效果显著，这将有利于克氏原螯虾生产和选育过程中群体的鉴别及外形特征的快速获取。 |
| 关键词: 克氏原螯虾 地标点法 传统形态测量法 形态差异性 产地 |
| DOI：10.11693/hyhz20200300073 |
| 分类号:Q954;S966.1 |
| 基金项目:农业部淡水渔业健康养殖重点实验室开放课题，ZJK201915号；现代农业产业技术体系专项，CARS-48号；江苏省农业科技自主创新资金项目资助，CX（17）2007-01号。 |
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| IMAGE-BASED MORPHOMETRIC DISCRIMINATION OF CRAWFISH (PROCAMBARUS CLARKII) FROM 5 HABITATS |
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TIAN Can1, LI Fei2, SU Sheng-Yan1,3, TANG Yong-Kai3, LIU Bo3, YU Ju-Hua3,4, YU Fan3, LI Jian-Lin3, LI Hong-Xia3, SONG Chang-You3, WANG Mei-Yao3
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1.National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China;2.Key Laboratory of Healthy Freshwater Aquaculture, Ministry of Agriculture and Rural Affairs, Key Laboratory of Freshwater Aquaculture Genetic and Breeding of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou 313001, China;3.Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China;4.1. National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
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| Abstract: |
| To understand the morphological differences of Procambarus clarkii in 5 habitats or populations of Jiangsu, Jiangxi, Hubei, Shanghai, and Henan in China, and to obtain rapid and effective morphological identification methods, traditional morphological measurement methods and landmark method were used to analyze the morphological differences among the five habitats. The results show that first, the relative warps principal component analysis showed that the cumulative contribution rates of the first three principal components for male and female P. clarkii were 79.96% and 67.21%, and those of the first three principal components by traditional morphological measurement were 76.77% and 82.70%, respectively. Both methods showed that the morphological differences are mainly reflected in the carapace and abdomen. Secondly, the five populations were clustered into two branches as shown in cluster analysis. The populations of Shanghai, Henan, Jiangxi, and Hubei were grouped into one, and the Jiangsu population were clustered into another one. Thirdly, the comprehensive discrimination accuracy of the landmark method for male and female populations was 100% and 94%, respectively, while that of the traditional method was 56% for all. In addition, there are some morphological differences in P. clarkii among different habitats, and the landmark method could better distinguish them. This will be beneficial to the identification of the population and rapid acquisition of shape characteristics for the production and breeding of P. clarkii. |
| Key words: Procambarus clarkii landmark method traditional morphometry morphological difference geographical origin |