拉萨河鱼类资源现状与利用对策

2005以来考察研究结果显示,拉萨河分布的主要经济鱼类有8个种,主要由鲤科Cyprinidaei（裂腹鱼属Schizothorax、叶须鱼属Ptychobarbus、尖裸鲤属Oxygymnocypris、裸裂尻鱼属Schizopygopsis）、鲦科Sisoridea（原鲦属Glyptosternum）、鳅科Cobitidae（高原鳅属Triplophysa）3个类群组成,上下游之间鱼类区系差异不显著,鱼类多以水生无脊椎动物、藻类、植物碎屑为食,多在6～8月繁殖。渔获物个体呈减小趋势,个别鱼种面临灭绝危机,由此,对合理开发利用渔业资源提出建议。

Current Status of Fish Resource in Lhasa River and Countermeasure of its Utilization

A total of eight major commercial fish species in Lhasa River including Cyprinidaei,（including Schizothorax,Ptychobarbus,Oxygymnocypris,Schizopygopsis）,Sisoridea（including Glyptosternum）,and Cobitidae（including Triplophysa） were found during the investigation carried out since 2005.There was no significant difference of distribution among fish species in the upper and lower catchments along the river.The fish feed on aquatic invertebrates,algae and plant detritus and reproduction period is mostly from June to August.The individual size of fish caught from the river has a tendency of decrease and some of specie has been met risk of extinction.Utilization countermeasure of fish resources in the Lhasa River was provided in the current paper.