摘要
本文研究了于桥水库26种鱼类的年龄与生长,测定1049尾鱼,以脊椎骨及鳞片鉴定结果确定年龄及体长;测定分析鱼类生殖力、产卵期、繁殖群体的年龄结构及产卵类型。结果表明,于桥水库鱼类产卵期主要集中在春季(3—5月)及夏季(6—8月);年龄及生殖力不同种类差异很大;繁殖鱼类种群年龄结构不尽一致。
The age, growth and reproduction of 26 fish species found in Yuqiao reservoir were examined during September 1987 to September 1988. The vertebral bones and scales of total 1049 individuals of fish were analyzed for the identification of their ages and body lengths. The spawning times, absolute fecundities, age structures of breeding population, and spawning types of fish were also studied. It has been found that the spawning times were mainly in spring (March to May)and summer (June to August); different species of fish varied largely in their age and fecundity; and there was not a complete consistence in the age structures of breeding population for different species of fish. There were 3 types of spawning habit, the first type is for the species such as Pungitius sinensis and Ctenogobius giurinus-, the second type is for the species such as Hemiculter leucisculus and Mastacem-belus aculeatus; and the third type is for the species such as Cyprinus carpio (L.).
出处
《生态学报》
CAS
CSCD
北大核心
1991年第3期269-273,共5页
Acta Ecologica Sinica
关键词
水库
鱼类
年龄
生长
繁殖
fresh waterfish, age, growth and reproduction, absolute fecundity, age structure of breeding population, spawning type.
