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青鼬Martes flavigula的核型研究

陈志平, 刘瑞清 ,王应祥   

  1. 中国科学院昆明动物研究所
  • 出版日期:2006-07-25 发布日期:2007-09-13

CHROM0S0ME STUDY 0F YELL0W-THR0ATED MARTEN (MARTES FLAVIGULA)

CHEN Zhiping,LIU Ruiqing, WANG Yingxiang   

  • Online:2006-07-25 Published:2007-09-13

摘要: 本文采用G带,C带和银染核仁组织者(Ag-NORs)等技术,对青鼬(Martes ftavfgula)的核型进行观察分折。结果表明:2n=40,双臂染色体16对,单臂染色体3对,x染色体为中着丝粒染色体。No.14同源染色体着丝点C带,一条呈阳性,另一条呈阴性。除此之外全部着丝点C带均显示强阳性。No.8染色体长臂是异染色质的,No.11和No.13具端位异染色质。Ag-NORs只有1对,分布在No.15染色体次缢痕区域。通过核型的比较分析,初步探讨了青鼬的分类地位和亲缘关系。

关键词: 青鼬, 染色体带型, 分类

Abstract: The karyotype of Martes flaviguga,captured from the west of Yunnan,has been studied from chromosome preparations of cuIture fibrob1astes and bone marrow cells.The number of diploid chromosome is 40.Autosomes consist of 5 pairs of metaeentri-cs,7 pairs of submetacentries,4 pairs of subteloeentries and 3 pairs of tetocentrics.X is a m etaeentrie chroinosome.
The G-banded,C-banded and silver-stained karyotypes have been observed.The results show that the centromerlc distribution of heteroehromatin is demonstrated in al1 chromosomes except one chromsome of No.14.No.1 9 and the Iong arms of No.8 are
completely C-band positive.The termina。of No.11 and No.1 3 chromosomes is with heterochro matin.A g-NORs are located at the secondary constriction of No.1 5.
By means of eomparing M.flavigula with M.foina,M.mattes and Mustela sibir-ica in G-banded,C-banded and silved-stained karyotypes,we think that M. flargula should be a subgenas of Martes,moreover,M.flavigula is a spcclalized species.

Key words: Yellow-throated Marten, Mattes f1avaigula, Banding pattern of chromosome, Classification.