大亚湾真鲷资源状况研究

• 作 者: 陈涛 林金钅表 郭金富 陈琳
• 机 构: 中国水产科学研究院南海水产研究所,中国水产科学研究院南海水产研究所,中国水产科学研究院南海水产研究所,中国水产科学研究院南海水产研究所 广东广州510300 ,广东广州510300 ,广东广州5103
• 出 处: 热带海洋学报
• 发表日期: 2003年03期
• 关键词: 资源变动 生殖群体 渔业资源调查 渔获 体长组成 群体组成 优势体 可捕规格 鱼类资源 平鲷

根据在大亚湾进行的渔业资源调查资料,对真鲷群体的分析表明,真鲷生殖群体约每年10月至翌年2月入湾产卵,主要分布于湾口至湾中岛礁的周围水域,群体的优势体长为450—600mm(56.9%)、优势体重为1500—3500g(59.8%),年龄组成以3—6龄鱼为主(66.7%);成鱼和鱼苗产量自1986年以来急剧减少,至1999年鱼苗年产量仅为1986年的0.9%,表明大亚湾的真鲷资源严重衰竭。

According to the survey on the fishery resources conducted in Daya Bay, the analysis of the red sea bream population showed that the red sea bream reproductive population spawn around October each year to February the following year, mainly in the waters around the Bayou Bay mid-island reefs. The dominant body length was 450-600mm (56.9%), the dominant body weight was 1500-3500g (59.8%), and the age was mainly 3-6-year-old fish (66.7%). The production of adult fish and fry decreased sharply since 1986, The annual output of fry in 1999 was only 0.9% of that in 1986, indicating that the resources of the seabream in Daya Bay have been severely depleted.