上海海洋大学学报2017，Vol.26Issue(4)：597-606,10.DOI:10.12024/jsou.20161201922
毛里塔尼亚外海乌贼的繁殖力特性研究
The fecundity of common cuttlefish (Sepia officinalis) in the offshore area of Mauritania
摘要
Abstract
The common cuttlefish, Sepia officinalis Linnaeus 1758, is mostly found in the eastern Atlantic and in the Mediterranean Sea, and constitutes an important fishery resource in the world cephalopod fisheries by attaining high market value in the Mediterranean and Asian markets.Herein,the individual fecundity of S.officinalis was studied based on the samples collected from the pelagic fisheries outside Mauritania during the fishing season of July to August in 2015.In addition, the relationship between individual fecundity and the biological indices of each individual, including mantle length, mantle width, fin length, fin width, head width, body weight, eviscerated weight, and head weight, was analyzed by using mathematic regression equations.The results showed that the frequency distribution of mantle length, mantle width, fin length, fin width, head width, body weight, eviscerated weight, and head weight was unimodal respectively.The potential fecundity (PF) was 13 06~3 375 oocytes, with an average of 2 466±545 oocytes, and increased significantly with sexual maturation (P<0.05);the relative fecundity by mantle length (PFML) was 8.70~18.56 oocytes/mm, with an average of 14.17±2.12 oocytes/mm;while the relative fecundity by body weight PFBW was 2.72~7.81 oocytes/g, with an average of 5.18±1.23 oocytes/g.Based on the comparison of variance, PFBW was more stable than PFML (δ2PFBW<δ2PFM L).There was a significant relationship between F and PFBW and the biological indices(P<0.05), while PFML showed little evidence to correlate with the biological indices due to the low value of correlation coefficient (P>0.05).Furthermore, a multiple regression analysis revealed that the potential fecundity was significantly correlated with fin length, while relative fecundity by body weight was significantly correlated with body weight.This finding showed that fin length was the reliable index to estimate the potential fecundity, while body weight was appropriate to estimate the relative fecundity by body weight for S.officinalis.关键词
乌贼/潜在繁殖力/相对繁殖力/生物学指标/毛利塔尼亚Key words
Sepia officinalis/potential fecundity/relative fecundity/biological indicator/Mauritania分类
农业科技引用本文复制引用
陈子末,陈新军,林东明,魏嫣然,陈程,魏广恩,陈洋洋..毛里塔尼亚外海乌贼的繁殖力特性研究[J].上海海洋大学学报,2017,26(4):597-606,10.基金项目
国家自然科学基金(NSFC41276156) （NSFC41276156）
上海市自然科学基金(16ZR1415400) （16ZR1415400）
上海海洋大学科技发展专项基金(A2-0203-00-100213) （A2-0203-00-100213）
上海海洋大学博士科研启动基金(A2-0203-00-100325) （A2-0203-00-100325）
上海海洋大学大学生创新项目(X201610264027) （X201610264027）
