金沙江下游干流鱼类资源现状研究  

Status of Fishery Resources in the Mainstream of the Lower Reaches of Jinsha River

作　　者：高少波[1] 唐会元[1] 乔晔[1] 杨志[1] 陈金生[1] 

机构地区：[1]水利部中国科学院水工程生态研究所,水利部水工程生态效应与生态修复重点实验室,武汉430079

出　　处：《水生态学杂志》2013年第1期44-49,共6页Journal of Hydroecology

基　　金：中国长江三峡集团公司项目(0799527;0714097);水利部公益性行业科研专项(200901011)

摘　　要：2008-2011年对金沙江下游干流进行了6次鱼类资源调查,共设5个采样点,每次调查时间为1-2个月。共计采集到鱼类6目、16科、52属、78种,圆口铜鱼(Coreius guichenoti)、南方鲇(Silurus meridionalis)、鲤[Cyprinus(Cyprinus)carpio]、瓦氏黄颡鱼(Pelteobagrus vachelli)、长鳍吻鮈(Rhinogobio ventralis)、歺又鱼(Hemiculter leucisculus)、鲇(Silurus asotus)、短须裂腹鱼[Schizothorax(Schizothorax)wangchiachii]、蛇鮈(Saurogobio dabryi)和中华倒刺鲃(Spinibarbus sinensis)为金沙江下游渔获物主要种类,不同江段的渔获物组成存在差异。渔获物平均尾重达到50g的种类仅13种,且多数种类的起捕规格小于10g,部分甚至小于1.0g,渔获个体以1～3龄鱼为主,大部分未达到性成熟年龄,渔获物小型化、低龄化现象明显,鱼类资源呈衰退趋势。Surveys of fishery resources were carried out at five stations in the mainstream of lower Jinsha River for six times from 2008 to 2011.Every survey lasted for one to two months.The survey results indicated that a total of 78 fish species,belonging to 6 orders,16 families and 52 genera were collected from the mainstream of the lower Jinsha River.The catch was dominated by the following ten species：Coreius guichenoti,Silurus meridionalis,Cyprinus（Cyprinus） carpio,Pelteobagrus vachelli,Rhinogobio ventralis,Silurus asotus,Hemiculter leucisculus,Schizothorax（Schizothorax） wangchiachii,Saurogobio dabryi and Spinibarbus sinensis.There were differences in the composition of catches among different sections of the river.Only 13 species＇ average weights were more than 50 g.Weights of most species of the catches were less than 10 g.Some species＇ weights even were less than 1g.Most species of the catches were 1-3 years old.The fishery resources in the mainstream of the lower Jinsha River showed an obvious decline.

关 键 词：金沙江下游 鱼类资源 现状 

分 类 号：Q145[生物学—生态学]