闽江中下游鱼类资源现状调查与分析

Fish Resources in the Middle and Lower Reaches of Min River: An Investigation with Analysis

2007年11月—2008年12月,采用定点渔获、分类鉴定和走访调查等方法,定期对闽江中下游鱼类资源进行调查.该流域共采集到鱼类标本139种,分属于12目33科67属,以鲤形目(43.17%)和鲈形目(30.22%)鱼类为主.鮈亚科(占鲤科总数的27.45%)、鳊亚科(占鲤科总数的21.57%)和鰕虎鱼科(占鲈形目总数的30.95%)成为优势种类.与历史资料比较,名贵鱼类濒临灭绝,主要经济鱼类明显减少,渔获物趋向低龄化、小型化.本研究还分析了鱼类资源变动的原因,对合理开发与保护鱼类资源提出了建议.

During November, 2007 and December, 2008, a survey of fish resources was carried out in the middle and lower reaches of Min River at regular intervals by fixed-point catching, together with the identification and classification of fishes and fishermen interviews. A total of 139 species of fishes belonging to 12 orders, 33 families and 67 genura were collected. For caught fishes, the majority were the fishes of Cypriniformes （43.17%） and Perciformes （30. 22% ）, and it was found that the predominant fishes included Gobioninae （ 27.45% of Cypriniformes ） , Abramidinae （ 21.57% of Cypriniformes） and Gobiidae （30. 95 % of Perciformes） . Further comparisons with historical records indicated that, for the study area, the rare fishes were on the brink of extinction, the main economic fishes had decreased distinctly and the caught fishes were becoming lower in age and smaller in size. In addition, the causes of such changes were given and some suggestions about reasonable exploitation and protection of the fish resources were proposed.