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刘瑞清, 陈玉泽, 施立明, 张词祖. 1994: 赤斑羚和斑羚核型比较研究. 动物学研究, 15(4): 49-54.
引用本文: 刘瑞清, 陈玉泽, 施立明, 张词祖. 1994: 赤斑羚和斑羚核型比较研究. 动物学研究, 15(4): 49-54.
LIU Rui-qing, CHEN Yu-ze, SHI Li-ming, ZHANG Ci-zu. 1994. Comparative Studies on Karyotypes Between N.cranbrooki and N.g.griseus. Zoological Research, 15(4): 49-54.
Citation: LIU Rui-qing, CHEN Yu-ze, SHI Li-ming, ZHANG Ci-zu. 1994. Comparative Studies on Karyotypes Between N.cranbrooki and N.g.griseus. Zoological Research, 15(4): 49-54.

赤斑羚和斑羚核型比较研究

Comparative Studies on Karyotypes Between N.cranbrooki and N.g.griseus

  • 摘要: 本文对赤斑羚(Naemorhedus cranbrooki)和斑羚(N.goral griseus)的染色体G带、C带和Ag-NORs的数目、分布等作了较详细的比较研究。赤斑羚2n=56全部为近端着丝粒染色体,N.F=54;斑羚2n=54,除No.3是亚中着丝粒染色体外,其余皆是近端着丝粒染色体,N.F=54。赤斑羚和斑羚全部着丝粒区域显示强C带阳性,具有丰富的异染色质;二者G带带纹相似程度高,其No.3长臂(q)G带带纹相似。斑羚的No.3短臂(p)与赤斑羚No.27近端着丝粒染色体的大小、形态和G带带纹相似;Ag-NORs的数目二者都是6个,有相似的分布,由此看来,赤斑羚和斑羚在核型进化上有密切的亲缘关系。

     

    Abstract: This paper deals with the comparison on karyotypes between red goral (Naemorhedus cranbrooki) and goral (Naemorhedus goral griseus).Their chromosomes were studied by several banding techniques (G-,C- and Ag-staining).These results are given as below:(1) The diploid number of red goral (N.cranbrooki) is 56.All of the chromosomes are acrocentrics.The X is a large one,and the Y,the smallest.The goral (N.g.griseus) has a dipolid number of 2n=54.The karyotype are consisted of 26 pairs of acrocentrics and one pair of submetacentric.The X chromosome is also a large acrocentric,and the Y chromosome,the smallest acrocentric.Therefor,the existence of submetacentric elements makes the remarkable difference between the chromosomal structures of red goral and goral.But autosomal arm number (N.F) are all 54 for both gorals.(2) The G-banding patterns of the 3q in goral are similar to that of the No.3 in red goral,and the G-banding patterns of the 3p in goral are similar to that of the No.27 in red goral.Therefore,it is suggested that a Robertsonian translocation could have happened during the karyotype evolution of gorals.(3) The centromeric distribution of heterochromatin has been demonstrated in all chromosomes of red goral and goral,while the whole Y chromosome is C-band positive.The C-bands of chromosomes are also similar for both gorals.(4) Ag-NORs have been observed at the terminal of 3 pairs of acrocentrics in red goral and goral,which could be No.1,2 and 4 larger acrocentrics according to their size and morphology.These results suggest a close relationship between red goral (N.cranbrooki) and goral (N.g.griseus).

     

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