颜云榕,邱星宇,张丽姿,钟亚娜,周倍合,招春旭,李忠炉

• 1:广东海洋大学水产学院
• 2:南方海洋科学与工程广东省实验室(湛江)南海资源大数据中心
• 3:广东省南海深远海渔业管理与捕捞工程技术研究中心

摘要(Abstract)：

【目的】研究南沙海域鸢乌贼(Sthenoteuthis oualaniensis)四个季节繁殖力、性腺成熟度、性成熟比例及卵径的变化规律。【方法】根据2018年灯光罩网作业渔船在我国南海南沙海域捕获的907尾鸢乌贼样本,通过测量胴长、体质量、性腺成熟度、性腺质量、卵粒数,研究鸢乌贼的繁殖生物学特性及变化规律。【结果】鸢乌贼胴长为45～165 mm,体质量为2.52～193.02 g;冬季雌雄比最高(1.23),夏季雌雄比最低(0.51);鸢乌贼个体性成熟比例较高季节分别为春季(53.3%)和冬季(48.4%);雌性个体性成熟度指数值最高为春季(1.27),最低为冬季(0.75),雄性个体性成熟度指数全年变化不明显;鸢乌贼潜在繁殖力为1 802～64 627粒,相对繁殖力为66.6～990.0粒·g-1,胴长与潜在繁殖力呈正相关线性关系;卵细胞长径为0.12～1.73 mm,平均(0.68±0.23)mm,短径为0.08～1.30mm,平均(0.47±0.20)mm。【结论】2018年鸢乌贼繁殖高峰期出现在春季和冬季,卵径大小与个体生长发育关系不明显,繁殖策略存在季节性差异。

关键词(KeyWords)： 鸢乌贼;繁殖力;卵径;性成熟度指数;南沙海域

Abstract:

Keywords:

基金项目(Foundation): 国家级大学生创新创业训练计划(201810566003);; 国家重点研发计划(2018YFD0900905);; 南方海洋科学与工程广东省实验室(湛江)资助项目(ZJW-2019-08);; 广东省海洋经济发展专项资金(GDNRC[2020]052);; 广东省南海深远海渔业管理与捕捞工程技术研究中心配套经费

作者(Author): 颜云榕,邱星宇,张丽姿,钟亚娜,周倍合,招春旭,李忠炉

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