鄱阳湖湖口鱼类资源现状调查

发布时间：2018-03-25 07:33

本文选题：鄱阳湖湖口　切入点：鱼类资源　出处：《淡水渔业》2016年06期

【摘要】：2014年5月-12月对鄱阳湖湖口县水域鱼类资源进行逐月调查,对该水域鱼类种类组成、渔获物结构、优势种、群落多样性指数和单位捕捞努力量渔获量(CPUE)进行分析。结果显示,在鄱阳湖湖口水域共采集鱼类52种,隶属于7目12科40属;优势种分别为鲤(Cyprinus carpio)、鲢(Hypophthalmichthys molitrix)、鲫(Carassius auratus)、鳙(Aristichys nobilis)和光泽黄颡鱼(Pelteobagrus nitidus),占样本个体总数的61.34%;Shannon-Wiener多样性指数(Hi)为2.59,Margalef种类丰富度指数(D)为6.09,Pielou均匀度指数(J')为0.65,Simpson优势度指数(λ)为0.87,相对稀有种数(R)为97.87%;该水域定置网CPUE为1.10~6.21 kg/d,与湖口水位呈显著正相关(P0.05)。鄱阳湖湖口水域渔业捕捞个体以小型鱼类居多,洄游型鱼类的幼鱼补充群体数量极少,鱼类群落多样性指数有上升趋势。
[Abstract]:A monthly survey of fish resources in the waters of Poyang Lake Hukou County was carried out from May to December 2014. The fish species composition, catch structure, dominant species, community diversity index and catch per unit fishing effort were analyzed. A total of 52 species of fish were collected in the estuary of Poyang Lake, belonging to 7 orders, 12 families and 40 genera. The dominant species are Cyprinus Carpiodon, Hypophthalmichthys molitrixus, Carassius auratusi, Aristichys nobilis) and Pelteobagrus nitidusi, respectively. For the rare species, the CPUE of the fixed net was 1.10 ~ 6.21 kg / d, which was positively correlated with the water level of the lake estuary (P 0.05). The majority of fishing individuals in Poyang Lake estuary were small fish. The restocking population of migratory fish is very small, and the diversity index of fish community is on the rise.
【作者单位】：农业部湖泊渔业资源环境科学观测实验站江西省水产科学研究所;农业部长江中上游渔业资源环境科学观测实验站中国水产科学研究院长江水产研究所;
【基金】：国家自然科学基金项目(51579247) 农业部长江中上游渔业资源环境重点野外科学观测试验站(YWTZ/2014-01) 江西省科技支撑项目(20141BBF60036)
【分类号】：S932.4

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