胶州湾六丝钝尾虾虎鱼的摄食生态特征  

Feeding ecology of Amblychaeturichthys hexanema in Jiaozhou Bay,China.

作　　者：韩东燕[1] 薛莹[1] 纪毓鹏[1] 麻秋云[1] 

机构地区：[1]中国海洋大学水产学院,山东青岛266003

出　　处：《应用生态学报》2013年第5期1446-1452,共7页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(41006083);山东省自然科学基金项目(ZR2010DQ026);中央高校基本科研业务费专项(201022001;201262004);国家海洋公益性行业科研专项(200805066)资助

摘　　要：根据2011年2—11月在胶州湾海域进行的4个季节的底拖网调查,共收集624尾六丝钝尾虾虎鱼样品进行胃含物分析,对其摄食生态进行了初步研究.结果表明:六丝钝尾虾虎鱼摄食的饵料种类有40余种,其中优势饵料生物有日本鼓虾、经氏壳蛞蝓和细螯虾等.其食物组成存在明显的季节变化,除在4个季节均大量摄食虾类外,春季主要摄食腹足类,夏季主要以鱼类为食,秋季主要摄食虾类,冬季摄食桡足类和端足类等小型甲壳生物的比例较高,这主要与胶州湾饵料生物种类和数量的季节性变化有关.随着体长的增长,六丝钝尾虾虎鱼摄食的饵料生物由小型的桡足类逐渐转变为个体较大的经氏壳蛞蝓、绒毛细足蟹和日本鼓虾等,食物组成呈现出明显的体长变化.典范对应分析(CCA)表明,水温和盐度是影响六丝钝尾虾虎鱼摄食的主要因素,其次是体长和pH.From February to November 2011, four seasonal bottom trawl surveys were conducted in the Jiaozhou Bay of China. A total of 624 Amblychaeturichthys hexanema individuals were collected to analyze their stomach contents, with the feeding ecology of A. hexanema studied. The prey items of A. hexanema included more than 40 species, among which, Alpheus japonicas, Philine kinglippi- ni, and Leptochela gracilis were the dominant prey species. The diet composition of A. hexanema had an obvious seasonal variation, with the gastropods, fish, decapods, and microcrustacean being the most important prey items in spring, summer, autumn, and winter, respectively. This phenom- enon could be mainly related to the seasonal variations in the species and biomass of the preys in Jiaozhou Bay. With the increase of predator size, the prey species of A. hexanema varied from small size copepod to larger sizes P. kinglippini, Raphidopus ciliates, and A. japonicas. The canonical correspondence analysis （CCA） showed that water temperature and salinity were the most important factors affecting the feeding of A. hexanema, followed by predator size and water pH.

关 键 词：胶州湾 六丝钝尾虾虎鱼 摄食生态 食物组成 典范对应分析 

分 类 号：S931.1[农业科学—渔业资源]