摘要
利用2009年12月在海州湾车牛山岛调查采集的60尾标本,初步研究该海域铠平鲉群体的繁殖群体生物学特征。铠平鲉繁殖群体体长范围64~119mm,体质量范围6.4~60.2g,年龄组成Ⅱ~Ⅷ龄,性比1.5∶1,以Ⅳ龄和Ⅴ龄组占优势,成熟个体最低年龄为Ⅱ龄,最高年龄为Ⅷ龄。绝对怀卵量变动于327~7 706粒之间,平均3 387粒;相对怀卵量变动于29~204粒/g,均值126粒/g。绝对怀卵量与纯质量的关系为E=126 W-326.27,与体长的关系为E=6×10-7 L4.352。以矢耳石切片为材料鉴定年龄并用Von Bertallanffy方程描述其生长,结果显示雌雄生长差异显著,生长方程分别为雌性Lt=135.5×(1-e-0.158×(t+3.578)),雄性Lt=136.9×(1-e-0.148×(t+3.289))。根据生态参数判断,铠平鲉属于偏k-选择型鱼类。
Based on 60 samples collected in December 2009 in Haizhou bay,this paper deals with the fisheries biology of Sebastes hubbsi(Matsubara) in Che-niushan island.The results are summarized as follows: 1) The body length of breeding population ranges from 64 to 119 mm,the weight ranges from 6.4 to 60.2 g.Groups are composed of Ⅱ~Ⅷ ages,sex ratio is 1.5∶1,the Ⅴ and Ⅵ ages dominate.The minimum mature age is Ⅱ and the maximum Ⅷ.2) the individual absolute fecundity E(ind) ranges from 327 to 7706(mean 3387).The individual relative fecundity E/W(ind/g) ranges from 29 to 204(mean 126).The relationship between the individual absolute fecundity E(ind)and net weight W(g) is expressed as: E=126W-326.27.The relationship between the individual absolute fecundity E(ind) and body length L(mm) is expressed as: E=6×10-7L4.352.3) Using the sectioned sagittae for age determination,and the growth of Sebastes hubbsi corresponds to von Bertallanffy growth equation.The results show significant difference existed between male and female,equations are as follows: female:Lt=135.5×(1-e-0.158×(t+3.578)),male: Lt=136.9×(1-e-0.148×(t+3.289)).4) According to the population fecundity and other ecological parameters,the life-history pattern of Sebastes hubbsi tends to be k-selected.
出处
《中国海洋大学学报(自然科学版)》
CAS
CSCD
北大核心
2011年第12期46-52,共7页
Periodical of Ocean University of China
基金
国家重点基础研究发展计划项目(2005CB422306,2007CB407305)
山东省自然科学基金项目(Y2008D21)资助
关键词
车牛山岛
铠平鲉
繁殖群体
生物学
Che-niushan island
Sebastes hubbsi
breeding stocks
biology