东海区龙头鱼摄食习性的研究  

Feeding habits of Harpadon nehereus in the East China Sea region

作　　者：林显鹏[1] 朱增军[1] 李鹏飞[1] 

机构地区：[1]浙江省海洋水产研究所,舟山316100

出　　处：《海洋渔业》2010年第3期290-296,共7页Marine Fisheries

基　　金：国家科技支撑计划项目(2007BAD43B01);浙北沿岸产卵场调查及渔业资源保护区选划(2008F1008);浙江渔场渔业资源调查监测和调查(2009F30001)

摘　　要：根据2008年4月~2009年2月东海区渔业资源大面积定点底拖网调查所捕获的渔获样品,对龙头鱼进行食性及其季节变化的研究。结果表明,龙头鱼属肉食性鱼类,且存在严重的同类相食现象。龙头鱼全年摄食的饵料种类数共有48种,优势饵料种类为龙头鱼、七星鱼、中国毛虾、太平洋磷虾、六丝矛尾虾虎鱼等。其中,春季的优势饵料种类为六丝矛尾虾虎鱼、细螯虾、龙头鱼等;夏季的优势饵料种类为龙头鱼、中国毛虾、七星鱼等;秋季的优势饵料种类为龙头鱼、七星鱼、细条天竺鲷等;冬季的优势饵料种类为七星鱼、带鱼、龙头鱼等。鱼类为其主要饵料类群,樱虾类、磷虾类、长尾类为其次要饵料类群。龙头鱼全年摄食率为47.26%,平均饱满系数为35.43‰,龙头鱼胃平均饱满系数在秋季最高,春季最低,摄食强度存在季节变化。Stomach content of Harpadon nehereus were collected from the East China Sea region from April,2008 to February,2009 were analyzed in order to determine the seasonal variation in feeding habits.Results showed that Harpadon nehereus belonged to nektivorous fish,and there was serious phenomenon of cannibalism.More than 48 species of prey were ingested by Harpadon nehereus,the Chaeturichths stigntatias,Leptochela gracilis and Harpadon nehereus,were the dominant prey in spring,Harpadon nehereus,Benthosema pterotum,Acetes chinensis in summer,Harpadon nehereus,Benthosema pterotum,Apogonichthys lineatus in autumn,and Benthosema pterotum,Trichiurus japonicus,Harpadon nehereus in winter.Fish was the dominant prey,Euphausiacea,Sergestinae and Natantia were the secnodary prey.The feeding intensity of Harpadon nehereus was 47.26%,and the average full stomach coefficient was 35.43‰,which was the highest in autumn and lowest in spring,and the feeding intensity varied with season.

关 键 词：东海区 龙头鱼 摄食习性 季节变化 

分 类 号：S917[农业科学—水产科学]