| 海州湾大泷六线鱼摄食生态研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 许莉莉 薛莹 徐宾铎 任一平 窦硕增 |
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| 作者单位： | 中国海洋大学水产学院;青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室;中国科学院海洋研究所中国科学院海洋生态与环境科学重点实验室 |
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| 基金项目： | 国家自然科学基金项目（31772852）；中央高校基本科研业务费专项（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）. |
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| 摘 要： | 根据2011年3—12月在海州湾及其邻近海域进行的5个航次底拖网调查,通过分析531尾大泷六线鱼(Hexagrammos otakii)的胃含物样品,对其摄食生态进行了初步研究。结果表明,大泷六线鱼摄食的饵料种类有60余种,虾类、蟹类、双壳类是其最主要的3种饵料类群,优势饵料生物有东方缝栖蛤(Hiatella orientalis)、疣背宽额虾(Latreutes planirostris)和钩虾(Gammarus sp.)等;其食物组成存在明显的季节变化和体长变化,全年均大量摄食虾类,夏季还摄食一定量的蟹类,秋季摄食多毛类和头足类的比例较高。随着体长的增长,大泷六线鱼摄食的饵料生物由小型甲壳类逐渐转变为体型较大的虾类和鱼类。大泷六线鱼的空胃率和平均胃饱满指数存在明显的季节变化,春季空胃率最高,冬季空胃率最低;平均胃饱满指数春季最高,秋季最低。典范对应分析表明,体长是影响大泷六线鱼摄食的主要因子,其次是底层水温、叶绿素a和pH。
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| 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 |
| 修稿时间： | 2018/6/19 0:00:00 |
Feeding ecology of Hexagrammos otakii in Haizhou Bay |
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| XU Lili,XUE Ying,XU Binduo,REN Yiping,DOU Shuozeng.Feeding ecology of Hexagrammos otakii in Haizhou Bay[J].Journal of Fishery Sciences of China,2018,25(3):608-620. |
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| Authors: | XU Lili XUE Ying XU Binduo REN Yiping DOU Shuozeng |
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| Institution: | 1. College of Fisheries, Ocean University of China, Qingdao 266003, China;2. Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;3. Key Laboratory of Marine Ecology & Environmental Sciences of Chinese Academy of Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| 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 exhibited 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 important factor affecting the diet composition of H. otakii, followed by sea bottom temperature, local chlorophyll a, and seawater pH. |
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| Keywords: | Haizhou Bay Hexagrammos otakii feeding ecology diet composition canonical correspondence analysis (CCA) |
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