水丰水库大银鱼的繁殖生物学

报道了1998－2000年间对水丰水库大银鱼（Protosalanx hyalocranius）繁殖生物学的调查研究结果，内容包括性成熟规格，生殖腺发育，副性征、繁殖力（个体繁殖力、相对繁殖力、群体繁殖速度、人工采卵量、成熟卵巢卵子组成及卵子的大小和质量），群体结构（体长体重频率分布、性比组成、日龄结构和生态年龄），产卵习性，胚胎发育。最后，讨论了其产卵类型，认为水丰水库大银鱼为一次性产卵和分批产卵的混合产卵类型。

Aspects of repoductive biology of large icefish (Protosalanx hyalocranius ) in Shuifeng Reservoir

Reproductive biology of large icefish \%Protosalanx hyalocranius\% including size at sexual maturity, development of gonads, secondary sexual characters, fecundity (individual fecundity, relative fecundity, population reproductive rate, number of mature egg of artificially collected from female and composition of egg from mature ovary and its size and weight), population structure (frequency distribution of body length and body weight, sex ratio, structure of daily age and ecological age), spawning habit, development of embryo, was studied in Shuifeng Reservoir during period of 1998-2000. The type of spawning of large icefish in Shuifeng Reservoir was also discussed, and it was considered that the fish was considered as a mixed type of once and multiple spawning a year.