老江河底栖动物变化动态及渔业利用  

Dynamic Changes of Zoobenthos in Laojianghe Oxbow and Its Fishery Utilization

作　　者：刘绍平[1] 陈大庆[1] 黄木桂[1] 邱顺林[1] 

机构地区：[1]中国水产科学研究院长江水产研究所

出　　处：《湖北农学院学报》1999年第1期31-34,共4页Journal of Hubei Agricultural College

基　　金：国家科技攻关项目

摘　　要：１９９１～１９９４年对老江河底栖动物进行了连续４ａ的季节采样，共获底栖动物３２种，其中寡毛类８种，水生昆虫１０种，软体动物１２种，其他２种，底栖动物年均密度变动于２９７～３７３个／，年均生物量变动于８３６１２～１１８２１７ｇ／。对底栖动物的季节变动、多样性指数变化进行了分析，并对底栖动物的渔产潜力进行了估算。Seasonal sampling of zoobenthos in Laojianghe oxbow was carried out for four years from 1991 to 1994. Altogether 32 species were recorded. Among them were 8 species of oligochaets, 10 species of aquatic insects,12 species of molluscs and 2 species of miscellaneous animals. Annual mean density and biomass of zoobenthos ranged from 297～373 ind/ and from 83.612～118.217 g/ respectively. Seasonal changes in density and biomass and in diversity indexes of zoobenthos in Laojianghe Oxbow were also analysed. An evaluation was made on the potential fish production that can be supported by zoobenthos

关 键 词：底栖动物 渔业利用 老江河 季节变动 

分 类 号：S937.3[农业科学—渔业资源]