南北水系中华绒螯蟹形态差异分析  

MORPHOLOGICAL VARIATIONS AND SPECIES VALIDITY OF ERIOCHEIR SINENSISIN THE NORTH AND SOUTH DRAINAGE SYSTEMS OF CHINA

作　　者：何杰[1] 徐跑[1] 朱健[1] 

机构地区：[1]中国水产科学研究院淡水渔业研究中心,农业部水生动植物遗传育种和养殖生物学重点开放试验室,无锡214081

出　　处：《海洋湖沼通报》2009年第3期79-86,共8页Transactions of Oceanology and Limnology

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(6-115034)资助

摘　　要：为探讨南北水系中华绒螯蟹形态差异及物种有效性问题,采用形态学测量的方法,每只蟹选择56个测量点,测量南北水系蟹各60只的54个形态性状。主成分分析显示,南北样本可以分成两个相互独立的群体。t检验显示,54个所测量形态变量中有25个南北差异极其显著(P<0.01),5个差异显著(0.01<P<0.05),解释主成分并描述群体形态分化的性状差异极其显著(P<0.01),南北水系(瓯江与辽河)中华绒螯蟹存在明显的地理隔离现象。Sixty specimens of Chinese mitten crab （Eriocheir sinensis） from north and south drainage systems were collected to measure 54 morphometric characters using traditional taxonomic methods. Data on the morphometric characters were analyzed by using principal component analysis in order to discuss the morphological variation and species validity of the characters. The populations of the north and south drainage systems were divided into two independent groups by the first two principal components. The t-test showed that there were extremely significant differences （P〈0.01） between the two groups in the 25 out of 54 morphometric characters, and significant differences （0.01〈P〈0. 05） between the two groups in the 5 out of 54 morphometric characters. The morphometric variations that explained principal component and described the morphometric divergence were extremely significant differences （P〈0. 01） between the two groups. The phenomenae of geographical segregation in Chinese mitten crab was existed in the north and south drainage systems （Liaohe River and Oujiang River）.

关 键 词：中华绒螯蟹 南北水系 主成分分析 T检验 形态差异 

分 类 号：S932.52[农业科学—渔业资源]