3种裂腹鱼的形态差异研究.pdfVIP

贵州农业科学 2010.38(10) ,121--126 Guizhou Agricultural Sciences E辜:_~1冒d:tjd;司 [文章编号J1001-3601 (2010) 10-0673-0121-06 3 种裂腹鱼的形态差异研究 林艳红1 ，安苗1\ 姜海波1.2 (1.贵州大学动物科学学院，贵州贵阳 550025; 2. 华东师范大学生命科学学院，上海 200062) [摘 要]为了解四川裂腹鱼、昆明裂腹鱼和光唇裂腹鱼的形态差异，结合常规形态学数据和框架测量 数据，以多元变量分析方法为主，传统形态学分析方法为捕，定量比较 3 种鱼的形态差异。结采表明， 3 种鱼 除背绪绪条数和臀绪绪条数无差异外，胸绪绪条数存在显著差异，其余 7 项性状存在板显著差异 ;16 项比例 性状中，除头长/眼径间元差异外，其余 15 项比例性状间存在显著差异;聚类分析表明，昆明裂旋鱼与光唇裂 腹鱼的形态距离较小，首先聚为一支，四川裂腹鱼独立为一支;判别分析建立了 3 种鱼的判别函数，对其支互 验证，判别准确率分别为 87.1%-100.0%(Pl)和 87.5%-100.0%(P2) ，综合判别率达 93.4%; 主成分分 析显示， 35 项可量和框架性状中处于躯干部横向、纵向和斜向的 19 项长度性状对 3 种裂腹鱼的差异贡献最 大，其中四川裂腹鱼与尤唇裂腹鱼的差异最为显著。表明，四川裂腹鱼与昆明裂腹鱼和尤，i-梨腹鱼之间形态 差异较大，昆明裂腹鱼和尤唇裂腹鱼间差异较小。研究结果对准确鉴别?评价其种间和不同地理种群形态 差异和种质质量、原种选择和制定繁育计划具有一定的参考作用。 [关键词]四川裂腹鱼 p 昆明裂腹鱼 z 尤唇裂腹鱼;形态差异 p 多元分析 [中固分类号] Q959 [文献标识码]A Study on Morphological Differences among Three Schizothorax Species LIN Yan-hong 1 , AN Miao 1 , JIANG Hai-bo1. 2 (1. College 01 Animal Science. Guizhou University. Guiyang , Guizhou 550025; 2. College 01 Lile Science , East China Normal University , Shanghai 200062. China) Abstracl: Morphological differences among three wild Schizothorax species were analyzed by the multivariation analysis and traditional morphological analysis based on conventional morphological data and framework measuring data. The results showed that there was significant difference in FTR and very significant difference in 7 other characters except DR and AR among three Schizothorax species and there was significant difference in 15 proportion characters except HL/ED among three Schizothorax species. The clustering analysis showed that Schizothorax grahami and Schizothorax griseus could be clustered as one group. and Schizothorax kozlovi could be clustered in another group. The P1 and P2 accuracy rate discriminated by the established discrimination functions was 87. 1% -100.0% and 87.5% -100.0% respectively and its comprehensíve discrimination rate reached 93.4%. The príncípal composítíon analysis showed that 19 length charact