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傀儡湖鱼类群落结构及其食物组成研究
引用本文:张晶晶.傀儡湖鱼类群落结构及其食物组成研究[J].水利渔业,2011,32(6):66-71.
作者姓名:张晶晶
作者单位:安徽农业大学生命科学学院,合肥,230036
摘    要:为了分析傀儡湖鱼类对水环境的影响,于2010年1-12月研究了傀儡湖的渔获量、组成比例和主要鱼类食物组成。结果表明,傀儡湖渔获物中,发现有9科、26种鱼类,其中鲤科鱼类最多,有18种,占鱼类种数的69.23%;鱼类组成中,鲢和鳙为优势种,分别占总渔获量的(20.82±8.06)%和(41.58±19.24)%;主要鱼类...

关 键 词:傀儡湖  鱼类群落  食物组成

Study on Structure of Fish Community and Diet Composition of Dominant Fishes in Lake Kuilei
Abstract:The fish catches, fish community composition and diet composition of dominant species in Lake Kuilei were studied from January to December, 2010 for the analyses of impact of fish community on the water environment. The results showed that: (1) 26 species fish belonging to 9 families were found in the fish catches, of which Cyprinidae is the dominant family with 18 species, accounting for 69.23% of total fish species; (2) Hypophthalmichthys molitrix and Aristichthys nobilos became the dominant fishes in the lake, respectively accounting for (20.82± 8.06)%, (41.58±19.24)% of the total fish catches; (3) In the diet composition of the dominant fishes, the dominant species, H. molitrix and A. nobilos mainly fed on phytoplankton, i.e. Cyanophyta and Bacillariophyta, and partly fed on zooplankton, namely Cladocera, while the carnivorous fish (Elopichthys bambusa and Culter alburnus) mainly fed on fishes and shrimps. The status of fewer fish species in the lake was possibly caused by species singularity of releasing fish fry and the competitiveness of E. bambusa to other fishes; high fish biomass was mainly caused by the excessive number of A. nobilos put in; the quantity of demersal fishes was large. According to the classical biological control theory of Shapiro, the quantity of A. nobilos released should be reduced while the quantity of zooplankton should be increased to control phytoplankton, improve water quality and restore fish resources.
Keywords:Lake Kuilei  fish community  diet composition
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