摘要
通过对2008年3月-2008年12月在青岛近海捕获的方氏云鳚样品进行的测定分析,初步研究了其繁殖生物学特征,结果表明:其性成熟系数每年只在11月形成1个峰值。绝对怀卵量变动于330-4 273粒之间,平均1 496粒;相对怀卵量变动于47-186粒/g(纯质量),平均127粒/g(纯质量)。绝对怀卵量与纯质量的关系为E=185.65W-599.38,与体长的关系为E=0.002 9L5.035。最小成熟个体,雌鱼体长为11.2 cm,纯质量为5.94 g;雄鱼体长为11.4 cm,纯质量为6.14 g。产卵盛期为11月。
This paper deals with the reproductive biology of Enedrias fangi Wang et Wang in Qingdao.The results are summarized as follows: 1) there is only one peak of gonadosomatic index in a year;2) the individual absolute fecundity E(eggs) ranges from 330 eggs to 4 273 eggs(mean 1 496 eggs).The individual relative fecundity E/W(eggs/g) ranges from 47 eggs/g to 186 eggs/g(mean 127 eggs/g).The relationship between the individual absolute fecundity E(eggs) and net body weight W(g) is expressed as: E=185.65W-599.38.The relationship between the individual absolute fecundity E(eggs) and body length L(cm) is expressed as: E=0.002 9L^5.035;3) The minimum mature male is 11.4 cm in body length and 6.14 g in net body weight,while the minimum mature female is 11.2 cm in body length and 5.94 g in net body weight;4) the breeding action occurs in November.
出处
《中国海洋大学学报(自然科学版)》
CAS
CSCD
北大核心
2010年第8期55-59,共5页
Periodical of Ocean University of China
基金
国家重点基础研究发展计划项目(2005CB422306)资助
关键词
青岛近海
方氏云鳚
繁殖生物学
性成熟系数
怀卵量
inshore waters of Qingdao
Enedrias fangi wang et wang
reproductive biology
gonadosomatic index
fecundity