自从在秦岭南北发现鲑科鱼类以来,其分布特征及生物地理学意义就引起了人们的广泛关注。对于秦岭南北鲑类的种系渊源,李思忠认为分布于秦岭南侧的哲罗鲑和分布于秦岭北侧的细鳞鲑“都是冰川期经日本海来自北方的残留鱼类”;有学者则进一步推测秦岭的这两种鲑科鱼类是因大冰期发生海 Since the discovery of salmonids in the north and south of the Qinling Mountains, its distributional characteristics and biogeographical significance have aroused people’s attention. For the origin of the salmon species in North and South Qinling, Li Si-zhong considered that the yellow-bellied Salmonella distributed in the south of Qinling Mountains and the small-scale salmon in the north of Qinling Mountains are all residual fish from northern Japan during the glacial period. Some scholars It is further speculated that these two salmonids in the Qinling Mountains were caused by sea occurrence during the Great Ice Age