Morphological Difference and Karyotype of Pelteobagrus fulvidraco in Dongting Lake Water System  

洞庭湖水系黄颡鱼的形态差异及染色体组型(英文)

作　　者：刘良国[1] 邹万生[1] 杨春英[1] 罗玉双[1] 杨品红[1] 

机构地区：[1]湖南文理学院生命科学学院动物学湖南省高校重点实验室,湖南常德415000

出　　处：《Agricultural Science & Technology》2011年第10期1521-1524,共4页农业科学与技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(30972260);Science and Technology Innovation Team Plan of Hunan Higher Education(2010)~~

摘　　要：[Objective] The research aimed to study the morphological characteristics and karyotype of Pelteobagrus fulvidraco in Dongting Lake water system.[Method] By using the conventional biological morphometry,PHA and colchicine injection method in vivo,the morphological characteristics and karyotype of P.fulvidraco in Yuanshui River and Lishui River of Dongting Lake were analyzed.[Result] In three ratio traits including standard length/head length,standard length/caudal peduncle depth,head length/snout length,P.fulvidraco of Yuanshui River and Lishui River had significant differences（P0.05）.However,the number and karyotype of their chromosomes were same.The chromosome number was 2n = 52,and the karyotype formula was 20M＋12SM＋10ST＋10T.The number of chromosome arm was 84.[Conclusion] The research result had certain theoretical guidance significance for the protection and utilization of wild P.resource in Dongting Lake water system.[目的]研究洞庭湖水系黄颡鱼群体的形态特征和染色体组型。[方法]采用常规生物学形态测量及PHA和秋水仙素活体注射方法,分别对洞庭湖水系沅水和澧水的2个黄颡鱼群体进行形态学特征及染色体组型分析。[结果]沅水和澧水的黄颡鱼在体长/头长、体长/尾柄高、头长/吻长3个比例性状上存在显著差异(P<0.05),但它们的染色体数目及组型相同,其染色体数2n=52,核型公式为20M+12SM+10ST+10T,染色体臂数为84。[结论]研究结果对洞庭湖水系野生黄颡鱼资源的保护及开发利用具有一定的理论指导意义。

关 键 词：Dongting Lake water system Yuanshui River and Lishui River P.fulvidraco Morphological characteristic KARYOTYPE 

分 类 号：S917.4[农业科学—水产科学]