南湖浮游动物季节变化与鳙鱼鱼产潜力估算  

Seasonal changes of zooplankton and estimation of bighead carp production potential in South Lake

作　　者：吴延志 陈宗永 Wu Yanzhi;Chen Zongyong(Nanning South Lake Park,Nanning 530021,China)

机构地区：[1]南宁市南湖公园,广西南宁530021

出　　处：《水产养殖》2020年第7期13-16,28,共5页Journal of Aquaculture

摘　　要：2017年冬季(1月)、春季(4月)、夏季(8月)、秋季(11月)对南湖浮游动物种群结构特征进行了监测分析。结果表明:南湖浮游动物有48个种(属),年平均密度529.6 ind./L,年生物量平均值1.420 mg/L,夏季密度和生物量最高、冬季最低,其季节变化趋势都是夏季﹥秋季﹥春季﹥冬季。鳙鱼产潜力为87.95 kg/hm^2,合理放养量176尾/hm^2。The structural characteristics of zooplankton populations in South Lake were monitored and analyzed in winter(January), spring(April), summer(August) and autumn(November), 2017. The results showedthat 48 species of zooplankton wit h an average annual density of 529.6 ind./L and an averag e annual biomass of 1.420 mg/L were found in South Lake.The highest density and biomass oc curred in summer, and the lowest ones in winter.The seasonal variation trend was summer, autumn, spring and winter. The potential for bighead carp production was87.95 kg/hm^2, with a reasonable stocking densityof 176 fish/hm^2.

关 键 词：浮游动物 季节变化 密度 生物量 鳙鱼产潜力 

分 类 号：S932[农业科学—渔业资源]