岗更湖浮游生物调查及鱼产力评估  

Plankton Community Structure and Productivity of Silver Carp and Bighead Carp in Ganggenghu Lake,in the Inner Mongolia Autonomous Region

作　　者：周波波 杨子龙 张子媛 李毅超 邵旭东 白禄军 王欣然 刘青[1] ZHOU Bobo;YANG Zilong;ZHANG Ziyuan;LI Yichao;SHAO Xudong;BAI Lujun;WANG Xinran;LIU Qing(Key Laboratory for Hydrobiology in Liaoning Province, Dalian Ocean University, Dalian 116023 China;Chifeng Fishery Technology Workstation, Inner Mongolia Autonomous Region, Chifeng 024000, China)

机构地区：[1]大连海洋大学辽宁省水生生物学重点实验室,辽宁大连116023 [2]赤峰市水产技术工作站,内蒙古赤峰024000

出　　处：《水产科学》2020年第5期734-743,共10页Fisheries Science

基　　金：赤峰市水利局—赤峰市鱼类资源调查项目。

摘　　要：2018年5月、7月和9月,参照《内陆水域渔业资源调查手册》,对内蒙古赤峰市克什克腾旗岗更湖的浮游生物进行了3次调查。共检测出浮游植物7门71种(属),包括绿藻门30种,硅藻门18种,蓝藻门14种,裸藻门4种,甲藻门2种,隐藻门2种和黄藻门1种。浮游植物平均密度为7882.43×10^4个/L,平均生物量为31.054 mg/L。岗更湖中共检测出浮游动物4大类34种,其中轮虫12种,原生动物9种,枝角类8种,桡足类5种。浮游动物平均密度为2947.5个/L,平均生物量为23.198 mg/L。浮游植物Margalef丰富度指数平均为1.077,Shannon-Wiener多样性指数平均为1.947,Pielou均匀度指数平均为0.466;浮游动物Margalef丰富度指数平均为1.992,Shannon-Wiener多样性指数平均为2.141,Pielou均匀度指数平均为0.552。由浮游生物种类、现存量和多样性指数判断岗更湖水体为超富营养型水体,由浮游生物饵料资源评估鱼产力为553.42 kg/hm^2。Plankton community structure was surveyed in Ganggenghu Lake in Hexigten Qi,Chifeng City,Inner Mongolia Autonomous Region in May,July and September 2018 according to the handbook for investigation of fishery resources in inland waters.A total of seven phyla and 71 species(genera)of phytoplankton were found,including 30 species(genera)in Chlorophyta,18 species(genera)in Bacillariophyta,4 species(genera)in Cyanophyta,4 species(genera)in Euglenophyta,2 species(genera)in Cryptophyta,2 species(genera)in Pyrrophyta and 1 genus in Xanthophyta.There was average density of 7882.43×10^4 ind/L and biomass of 31.054 mg/L in phytoplankton.A total of 34 species(genera)of zooplankton were identified in Ganggeng Lake,including 12 species(genera)of rotifers,9 species of protozoa,8 species of cladocerans and 5 species of copepods,with average density of 2947.5 ind/L and biomass of 23.198 mg/L.There were average Margalef richness index of 1.077,average Shannon-Wiener diversity index of 1.947,and average phytoplankton of Pielou evenness index of 0.466 for phytoplankton.In zooplankton,there were average Margalef richness index of 1.992,Shannon-Wiener diversity index of 2.141 and average phytoplankton of Pielou evenness index of 0.552.The plankton species,biomass and diversity index indicated that the water in Ganggenghu Lake was super eutrophic,and that the productivity of silver carp(Hypophthalmichthys molitrix),and bighead carp(Aristichthys nobilis)was 553.42 kg/hm^2 based on the natural food resources of plankton in the lake.

关 键 词：岗更湖 浮游生物 饵料资源 水体营养型 鱼产力 

分 类 号：S932[农业科学—渔业资源]