| 摘要: |
| 本文对繁殖季节的209尾凤鲚标本进行了生物学分析。在采获的标本中,最大体长182mm,体重23.4g;最小体长94mm,体重3.5g。肥满度（k）平均为3.15×10-4。其体长与体重的回归关系式为W=1.174×10-5L2.773。雌鱼的绝对繁殖力平均为7403.48粒,成熟系数为18.92%。雄鱼成熟系数8.02%。绝对繁殖力与体长呈曲线回归关系,F=1.906×10-2L2.54,与体重呈直线回归关系,F=688.13W—2119.68。 |
| 关键词: 凤鲚 繁殖群体 生物学特性 因数关系 |
| DOI：10.18307/1993.0209 |
| 分类号: |
| 基金项目: |
|
| STUDY ON THE BIOLOGICAL CHARACTERISTICS AND FACTOR CORRELATION OF COILIA MYSTUS PROPAGATING POPULATION |
|
Zeng Qiang, Dong Fangyong
|
|
Institute of Reservoir Fisheries, Ministry of Water Resources and Academia Sinica, Wuhan
|
| Abstract: |
| Two hundred and nine samples were collected to study Coilia mystus. It is found that the maximum body length and weight are 182mm and 23.4g respectively in commercial stock. The minimum body length and weight 94mm and 3.5g respectively, and the individual average K value 3.15×104. The relationship between body length and body weight of Coilia mystus may be expressed as W=1.174×10-5Z,2.773.The individual average absolute fecundity and maturity coefficient of female are 7403.48 eggs and 18.92% respectively. The individual average maturity coefficient of male is 8.02%. The relationship between body length or body weight and absolute fecundity can be expressed as F=1.906×102L2.54 and F=688.13W-2119.68 respectivaly. |
| Key words: Coilia mystus propagating population biological characteristics relationship of factors |
