红水河龙滩水库鱼类资源调查

Investigation of Fish Resources in Longtan Reservoir of Hongshuihe River

于2009年6月和11月对红水河龙滩水库鱼类资源进行了调查,共采集到鱼类90种,分属7目、18科、69属;其中,鲤形目(Cypriniformes)51属、64种,占总种数的71.1%;鲇形目(Siluriformes)8属、13种,占14.4%;鲈形目(Perciformes)6属、9种,占10.0%;鳗鲡目(Anguilliformes)、鲑形目(Salmoniformes)、鳉形目(Cyprinodontiformes)、合鳃目(Synbgranchiformes)均为1属、1种。结果表明,龙滩水库建设导致水域生态环境的改变是鱼类种类组成及其群落结构变化的主要因素;渔获物分析结果显示,龙滩水库鱼类资源呈现低龄化和小型化的趋势。

Detailed data and corresponding analysis on fish resources in Longtan Reservoir of Hongshuihe River were presented in this paper based on surveys conducted in this area in June and November 2009.A total of 90 fish species from 69 genera, 18 families and 7 orders in taxonomy were recorded;Among which Cypriniformes with 51 genera and 64 species , Perciformes with 8 genera and 13 species and Siluriformes with 6 genera and 9 species ac-counted for 71.1%,14.4% and 10% of the total species, respectively; Anguilliformes, Salmoniformes, Cyprin-odontiformes and Synbgranchiformes only had 1 genus and 1 species , respectively .The survey results indicated that the change of ecological environment caused by the construction of Longtan Reservoir was the leading factor affect -ing fish species composition and community structure .In addition, the analysis of main fish catches also showed that fish resources of Longtan Reservoir presented a tendency of younger age and smaller size .