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当前位置: 首页 > 文章 > 高密度黄颡鱼—鳙养殖池塘浮游生物种群与理化因子的变化研究 淡水渔业 2015 (3) 78-83
Position: Home > Articles > Changes of plankton community structures and physicochemical factors in polyculture pond with high intensity Pelteobagrus fulvidraco and Aristichthys nobilis Freshwater Fisheries 2015 (3) 78-83

高密度黄颡鱼—鳙养殖池塘浮游生物种群与理化因子的变化研究

作  者：
李学梅;朱永久;李昊成;姚建伟;李飞;杨德国
单  位：
中国水产科学研究院长江水产研究所农业部淡水生物多样性保护重点实验室
关键词：
黄颡鱼(Pelteobagrus fulvidraco);鳙(Aristichthys nobilis);浮游生物;理化因子
摘  要：
以高密度的黄颡鱼(Pelteobagrus fulvidraco)-鳙(Aristichthys nobilis)分隔养殖池塘为研究对象,分析养殖期间(2013年4月—10月)池塘浮游生物和水体理化因子的变化情况。结果显示,池塘水体温度、p H、DO和总氮指标在养殖期间存在显著差异(P<0.01)。Duncan's多重比较显示,温度在6—8月显著高于其他时间(P<0.05);总氮在7—9月的含量显著升高(P<0.05);氨氮和亚硝态氮在8—10月的含量明显升高(P<0.05)。池塘浮游生物的变化表现为:枝角类和桡足类物种数随养殖时间的延长而逐渐减少,其中秀体溞属(Diaphanosoma)占优势;轮虫物种数呈上升趋势,其中臂尾轮虫属(Brachionus)占优势;原生动物物种数在各月份之间差异不明显,以球吸管虫属(Sphaerophrya)为优势种;藻类物种数呈先上升再下降的趋势,其中绿藻门(Chlorophyta)种类占优势,其次为裸藻门(Euglenophyta)种类。基于Dice相似系数的UPGMA聚类和Pearson相关系数的MDS排序均显示池塘水体中浮游生物群落在整个养殖期间可分为2大类,4、5、6、7月各样本聚在一起,8、9、10月各样本聚在一起,表现为前4个月(4—7月)相似性高,而后3个月(8—10月)相似性高;说明池塘浮游生物的群落结构随养殖时间延续发生了改变。
译  名：
Changes of plankton community structures and physicochemical factors in polyculture pond with high intensity Pelteobagrus fulvidraco and Aristichthys nobilis
作  者：
LI Xue-mei;ZHU Yong-jiu;LI Hao-cheng;YAO Jian-wei;LI Fei;YANG De-guo;Key Laboratory of Freshwater Biodiversity Conservation,Ministry of Agriculture of China,Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences;
关键词：
Pelteobagrus fulvidraco;;Aristichthys nobilis;;plankton community structures;;physicochemical factors
摘  要：
Plankton community structures and physicochemical factors were studied in pond polyculture modes with high intensity Pelteobagrus fulvidraco and Aristichthys nobilis from April to October in 2013. The results showed that: the water temperature,p H and the concentrations of DO and total nitrogen had significant differences during the breeding period( P< 0. 01). Furtherly,Duncan's multiple comparison revealed temperature was significantly higher during June,July and August( P < 0. 05); total nitrogen content increased significantly in July,August and September( P < 0. 05),while the concentrations of ammonia nitrogen and nitrite nitrogen increased significantly in August,September and October( P <0. 05). In terms of the plankton communities,results showed that the species number of cladocera and copepods decreased with prolongation of culture time,while the genus Diaphanosoma was dominant. However,rotifer species number was on the rise,and the genus Brachionus was dominant. There are no significant decreases for species numbers of Protozoa during the breeding period,and the genus Sphaerophrya was dominant. The algae species number increased first and then decreased. Of which,the phylum Chlorophyta was dominant,followed by phyla Euglenophyta. In addition,UPG-MA clustering and MDS ordination respectively based on Dice and Pearson similarity coefficient showed that plankton community structure separated two groups during the breeding period,the former four months( April,May,June and July)clustered one group while the other months( August,September and October) clustered another group.

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