云南六种家鼠染色体银染色研究

Studies on the Ag—staning Karyotypes of Six Species of Genus Rattus in Yunnan

本文报道了云南褐家鼠(Rattus norvegicus)、黄胸鼠(Rattus flavipectus)、白腹巨鼠(Rattus edwardsi)、社鼠(Rattus niviventer)、刺毛鼠(Rattus fulvescens)和王鼠(Rattus rajah)的核仁组织者区(nucleolus organizer regions)在染色体上的分布位置。通过分析各个种动物染色体上核仁组织者区的位置来探讨这六种动物之间存在的亲缘关系以及可能的演化途径。从而得出这六种家鼠可能的演化线路可分成三支:褐家鼠和黄胸鼠代表着其中一支;社鼠、刺毛鼠和白腹巨鼠代表着另一支;最后一支是王鼠。

This paper deals with the comparison of the Ag—staning of Rattus norvegicus.Rattus flavipectus.Rattus niviventer.Rattus fulvesence.Rattus edwardsi,and Rattus rajahcaught in yunnan province.Based on the NORs(showed by Ag—staning of chromosme)ofchromosomes of each Rattus species,the phylogeny and the evolution lines among these Rat-tus species has been discussed.After that,we find these six Rattus species may be cassified in-to three groups:R.norvegicus,and R.flavipectus for the first group,R,niviventer,R.fulves-ence and R.edwardsi for the second.R.rajah for the third.