3种毛色乌苏里貉染色体数目的比较

目的]为建立3种毛色貉生物学特性数据库提供理论依据。方法]以红褐色乌苏里貉、野生乌苏里貉和吉林白貉为研究对象,利用外周血淋巴细胞培养法制备染色体标本,对3种毛色乌苏里貉的染色体数目进行比较。结果]红褐色乌苏里貉和野生乌苏里貉二倍体细胞染色体数为56的细胞频率分别为86%和83%,表明红褐色乌苏里貉和野生乌苏里貉种群体细胞的染色体众数为56。吉林白貉二倍体细胞的染色体数目为56的细胞频率为70%,低于其他2种貉。结论]红褐色乌苏里貉和野生乌苏里貉的染色体众数相同,均为56;吉林白貉的染色体众数为56或57,其染色体数目存在多态现象。

Comparison of Chromosome Number among Three Colors of Ussuri Raccoon Dog

Objective] The research aimed to provide theoretical basis for establishing the biological database of three colors of Ussuri rac-coon dogs. Method] Using reddish-brown Ussuri raccoon dogs, wild Ussuri raccoon dogs and Jilin white raccoon dogs as research objects, chromosome samples were prepared with peripheral blood lymphocyte culture method. The chromosome number of these three colors of Ussuri raccoon dogs were compared. Result] Tile cell frequency of reddish-brown Ussuri raccoon dogs and wild Ussuri raccoon dogs with diploid cell chromosome number of 56 were 86% and 83% , which showed that chromosome mode of reddish-brown Ussuri raccoon dogs and wild Ussuri raccoon populations was 56. The cell frequency of Jilin white raccoon dogs with diploid cell chronmsome number of 56 was 70%, which was lower than the other two kinds of Ussuri raccoon dogs. Conclusion] The chromosome mode of reddish-brown Ussuri raccoon dogs and wild Us-suri raccoon populations was both 56. The chromosome mode of Jilin white raccoon dogs was 56 or 57, the chromosome number showed poly-morphism.