七种鲅亚科鱼Ag-NORs的比较研究

本文研究了红鳍鲅、青稍红鲅、蒙古红鲅、翘嘴红鲅、CAN条、团头鲂和长春鳊等7种鲅亚科鱼类的银染带。结果表明,在中期分裂相中各自的A g-NORs数在4-8个之间。综合分析比较国内已发表的鲤科银染资料,得出多数中国鲤科鱼类的Ag-NORs数为4位于两对sm染色体短臂端部。鲅亚科鱼在进化过程中NORs数目有增加的趋势。 Abstract:The Ag-NORs of 7 species in Abramidinae,namely Culter erythropterus,Erythroculter dabryi,E.ilishaeformis,E.mongolicus,Hemiculter leucisclus,Megalobrama amblycephala and Parabramis pekinensis were studied.The results showed that 4~8 Ag-NORs were observed in their metaphases respectively.Based on the Ag-NORs data of Cyprinid fishes published in China,we suggested that the number of Ag-NORs in major Chinese Cyprinidae is 4,locating on the short arm tips of two pairs smchromosomes.The trend of Ag-NORs number in Abramidinae fishes is towards increasing in course of evolution.

Comparative Studies on the Ag-NORs of Seven Fish Species in Abramidinae (Cypriniformes)