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【摘 要】
：
文章根据1986—1987年和 2018—2019年珠江河口棘头梅童鱼 (Collichthy lucidus) 的调查数据，对其群体结构、生长、摄食等主要生物学特征的年代际变化进行了研究。结果表明，这2个调查时间段内棘头梅童鱼群体优势体长组均为90~110 mm，平均体长分别为 (95±13) mm和 (93±18) mm。2个年代际的平均体长无显著差异 (P>0.05)，但优势体长组个体数占比降低 (P0.05)。2018—2019年棘头梅童鱼雌、雄个体的平均肥满度和平均摄食等级均存在显著差异 (P0
【机 构】
：
中国水产科学研究院南海水产研究所/农业农村部外海渔业开发重点实验室,广东,广州,510300;上海海洋大学水产与生命学院,上海,201306;广东海洋大学水产学院,广东,湛江,524088
【出 处】
：
南方水产科学
【发表日期】
：
2021年1期
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