中国水产科学2018，Vol.25Issue(3)：608-620,13.DOI:10.3724/SP.J.1118.2018.17322
海州湾大泷六线鱼摄食生态研究
Feeding ecology of Hexagrammos otakii in Haizhou Bay
摘要
Abstract
The present study investigated the feeding habits of Hexagrammos otakii in Haizhou Bay and adjacent waters by analyzing the stomach contents of 531 individuals collected from March to December 2011. More than 60 prey species were investigated, with the dominant species being Hiatella orientalis, Latreutes planirostris, and Gammarus sp. and the main prey groups being shrimp, crabs, and bivalves. The feeding habits of H. otakii exhib-ited significant seasonal variation. Shrimp were a major prey group during all four seasons, but a large number of crabs were consumed during summer, whereas the greatest proportions of Polychaeta and Cephalopoda prey were observed during autumn. Ontogenetic variation in diet composition was also observed. For example, small H. otakii mainly consumed small crustaceans, whereas larger individuals mainly consumed fish and shrimp. Feeding intensity (i.e., percentage of empty stomachs and mean stomach fullness index) also exhibited seasonal variation. The greatest empty stomach percentages and mean stomach fullness indices were both observed during spring, whereas the lowest empty stomach percentages and mean stomach fullness indices were observed during winter and autumn, respectively. Canonical correspondence analysis (CCA) indicated that body length was the most im-portant factor affecting the diet composition of H. otakii, followed by sea bottom temperature, local chlorophyll a, and seawater pH.关键词
海州湾/大泷六线鱼/摄食生态/食物组成/典范对应分析Key words
Haizhou Bay/Hexagrammos otakii/feeding ecology/diet composition/canonical correspondence analysis (CCA)分类
农业科技引用本文复制引用
许莉莉,薛莹,徐宾铎,任一平,窦硕增..海州湾大泷六线鱼摄食生态研究[J].中国水产科学,2018,25(3):608-620,13.基金项目
国家自然科学基金项目(31772852) （31772852）
中央高校基本科研业务费专项(201562030, 201612004) （201562030, 201612004）
青岛海洋科学与技术国家实验室鳌山科技创新计划项目(2015ASKJ02). （2015ASKJ02）
