摘要
2017年9月到2019年10月利用3层刺网和地笼网,按季节共9次对金泽水库进行鱼类资源的调查,分析鱼类群落结构特征,并用双声呐鱼探仪对金泽水库的鱼类资源量进行探测,共调查到30种鱼类,隶属于5目7科,其中:淡水型鱼类28种、河口型1种、洄游型1种;草食性、植食性、滤食性、杂食性、初级肉食性和次级肉食性鱼类分别有2、3、2、9、5和9种;渔获物中滤食性鲢(Hypophthalmi chthysmolitri)和鳙(Aristichthys nobilis)无论在个体数还是质量均排在第一、二位;优势种(IRI>1000)有鲢、鳙、鲫(Carassius auratus auratus)和刀鲚(Coilia nasus)。水声学双声呐鱼探仪探测金泽水库2019年10月的鱼类资源量约为13.33万尾和11.58万kg。金泽水库现阶段的鱼类群落结构与水库建成投放鱼类之前相比,已有较大的差异;现有鱼类与太湖鱼类区系相似性高。
The fish community in Jize Reservoir were seasonally investigated from September 2017 to October 2019.The main fish resources were detected by dual-frequency identification sonar(DIDSON),and the fishery acoustic data were processed by Software Echoview.A total of 30 fish species from 7 families 5 orders were collected,with 28 species of freshwater fish,1 species of estuary fish,1 species of emigratory fish.And the herbivorous fishes,phytophagous fishes,planktivore fishes,omnivorous fishes,primary carnivorous fishes and second carnivorous fishes were 2,3,2,9,5 and 9 species respectively.The planktivore feeding fishes including silver carp and Bighead Carp ranked No.1 in both individual number and mass in catches.The dominant fishes(IRI>1000)were Hypophthalmichthys molitrix,Hypophthalmichthys nobilis,Hypophthalmichthys nobilis,Coilia nasus.The total number of fish was 133300 and the total resource were 115800 kg respectively in Jinze Reservoir by the DIDSON,the fish stocksperm 2 was at a high level according to water conservancy industry standard of the people’s Republic of China SL 563-2011,ICS 93,160,P55.The present fish community structure was significant difference comparing with that before the reservoir was running,but which was high similarity with the fish fauna in Lake Taihu.
作者
黄晖
龚小玲
HUANG Hui;GONG Xiaoling(Jinze Reservoir Management Branch of Shanghai Chentou Raw Water Co.Ltd,Shanghai 201722,China;National Demonstration Center for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai 201306,China;Shanghai University Key Laboratory of Marine Animal Taxonomy and Evolution,Shanghai 201306,China;Shanghai Collaborative Innovation for Aquatic Animal Grenetics and Breeding,Shanghai Ocean University,Shanghai 201306,China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2020年第6期847-854,共8页
Journal of Shanghai Ocean University
基金
水体污染控制与治理科技重大专项(2017ZX07207003-02)
关键词
金泽水库
鱼类
群落结构
资源量
Jinze Reservoir
fish
community structure
fish resource
