摘要
本文对渤海湾、莱州湾毛虾的性成熟、产卵和性比的季节变化规律等生殖特性,作了全面阐述。研究结果表明,本海区毛虾的性成熟期为5月上旬—10月上旬,盛期为5月下旬—18月中旬。性成熟度与个体体长、体重间,均呈密切正相关关系;与温、盐度间皆呈密切二次相关关系,最适温度为20.92℃,最适盐度为21.18‰。个体平均排卵量为4222粒,最大排卵量为9863粒。个体排卵量与体长、体重间均呈密切正相关关系。毛虾性比的季节差异与生殖死亡密切相关,在生殖季节里一般雌虾多于雄虾。
The characteristics of sexual maturity, spawning, sex ratio and its variation with season of Acetes chinensis are reported.Based on the results investigated from 1983 to 1986, the shrimp matured during the period of early May to early October. The spawning period of the shrimp begins at late May and ends at mid August. The maturity is in direct proportion to lengths and weights of individuals and in square correlation with temperature. The optimum temperature and salinity for the sexual reproduction are 20.92℃ and 21.18‰ respectively. The values of average and maximum fecundity for the shrimp are 4,222 and 9,863 respectively. The numbers of egg-releasing are in direct proportion to the lengths and weights of the individuals. During the reproductive seasons, the females are usually more than the males in the waters.
出处
《海洋湖沼通报》
CSCD
北大核心
1992年第2期58-67,共10页
Transactions of Oceanology and Limnology
关键词
虾
中国毛虾
生殖特性
渤海湾
Acetes chinensis
reproductive charateristics
Bohai Bay
Laizhou Bay
