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应用稳定同位素技术分析枸杞岛近岸海域褐菖鲉的食性
引用本文:薛彬,蒋日进,王凯,梁君,徐开达,李振华.应用稳定同位素技术分析枸杞岛近岸海域褐菖鲉的食性[J].水产学报,2017,41(9):1415-1423.
作者姓名:薛彬  蒋日进  王凯  梁君  徐开达  李振华
作者单位:1. 浙江省海洋水产研究所,农业部重点渔场渔业资源科学观测实验站,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021;中国地质大学(武汉)地球科学学院,生物地质与环境地质国家重点实验室,湖北武汉430074;2. 浙江省海洋水产研究所,农业部重点渔场渔业资源科学观测实验站,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021;上海海洋大学海洋科学学院,上海201306;3. 上海海洋大学海洋科学学院,上海,201306;4. 浙江省海洋水产研究所,农业部重点渔场渔业资源科学观测实验站,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021
基金项目:国家自然科学基金(41176110,41406153);浙江省自然科学基金(LY13D060006,LY17C190006);浙江省科技厅项目(2016F30018)
摘    要:为获知褐菖鲉的食性,本研究应用碳、氮稳定同位素技术分析了不同季节和发育阶段褐菖鲉的摄食习性,并评估了浮游动物、端足类、虾蟹类和小型鱼类等饵料生物对褐菖鲉的营养贡献。结果显示,枸杞岛近岸海域4个季节褐菖鲉的δ~(13)C值为–18.2‰~–14.7‰,平均值为–15.6‰;δ~(15)N值为3.3‰~9.9‰,平均值为7.9‰;单因素方差分析显示,褐菖鲉的δ~(13)C值和δ~(15)N值在不同季节之间差异都不显著,说明不同季节之间褐菖鲉的食性差异不大。对褐菖鲉全长和碳、氮稳定同位素比值进行线性回归分析,显示其δ~(13)C值和δ~(15)N值随全长变化都极显著,表明不同发育阶段褐菖鲉的食性差异极显著。聚类分析将不同全长的褐菖鲉分为3组,其中0~19 mm为一组,20~79和80~109 mm为一组,110~199 mm为一组,ANOSIM分析3组之间的差异极显著。褐菖鲉的δ~(13)C值与虾蟹类和鱼类等饵料类群δ~(13)C值较接近,应用Iso Source软件分析饵料类群的营养贡献时发现,麦秆虫对褐菖鲉的的营养贡献均值最大,为22.3%,鱼类、虾蟹类等饵料类群的营养贡献均值都超过了12%。枸杞岛近岸海域褐菖鲉的平均营养级为3.18,属于低级肉食性鱼类,主要摄食麦秆虫、鱼类和虾蟹类,是底栖动物食性,而非浮游动物食性。

关 键 词:褐菖鲉  稳定同位素  食性  营养级
收稿时间:2016/9/14 0:00:00
修稿时间:2017/4/6 0:00:00

Feeding habits of Sebastiscus marmoratus in the Gouqi Island based on stable istope analysis
XUE Bin,JIANG Rijin,WANG Kai,LIANG Jun,XU Kaida and LI Zhenhua.Feeding habits of Sebastiscus marmoratus in the Gouqi Island based on stable istope analysis[J].Journal of Fisheries of China,2017,41(9):1415-1423.
Authors:XUE Bin  JIANG Rijin  WANG Kai  LIANG Jun  XU Kaida and LI Zhenhua
Institution:Scientific Observing and Experimental Station of Fishery Resources for Key Fishery Grounds, Ministry of Agriculture, Zhejiang Province Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China,Scientific Observing and Experimental Station of Fishery Resources for Key Fishery Grounds, Ministry of Agriculture, Zhejiang Province Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China;College of Marine Science and Technology, Shanghai Ocean University, Shanghai 201306, China,College of Marine Science and Technology, Shanghai Ocean University, Shanghai 201306, China,Scientific Observing and Experimental Station of Fishery Resources for Key Fishery Grounds, Ministry of Agriculture, Zhejiang Province Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China,Scientific Observing and Experimental Station of Fishery Resources for Key Fishery Grounds, Ministry of Agriculture, Zhejiang Province Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China and Scientific Observing and Experimental Station of Fishery Resources for Key Fishery Grounds, Ministry of Agriculture, Zhejiang Province Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Marine Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China
Abstract:Sebastiscus marmoratus was the main economic fish in Gouqi Island offshore waters of north-east Zhoushan Islands,which played an important part in local fishery.This research used carbon and nitrogen stable isotope technology to analyze the feeding habit of S.marmoratus in different seasons and developmental stages and evaluated the nutrition contribution from food organism such as zooplankton,amphipoda,shrimp,crabs and small fishes.It showed that in the four seasons of Gouqi Island offshore waters,the δ13c value of S.marmoratus was between-18.2‰ and-14.7‰,of which the average value was-15.6‰;the δ15N value was between 3.3‰ and 9.9‰,of which the average value was 7.9‰.One-Way ANOVA showed that the δ13C value and that of δ15N were insignificantly different between seasons.This indicated only a slight difference in the feeding habit between different seasons.A linear-regression analysis was carried out,which analyzed the whole body length and the carbon and nitrogen stable isotope ratios and showed the δ13C and δ15N values changed with the body length significantly,which indicated the differences of the feeding habits of different developmental stages were very significant.Cluster analysis divided S.marmoratus with different body length into three groups:one group with the length of 0 to 19 mm,another group 20 to 79 mm and 80 to 109 mm and the third one 110 to 199 mm.ANOSIM analysis showed the differences between the three groups were quite significant.The δ13C value of S.marmoratus was close to that of the food organism such as shrimp,crabs and small fishes.When analyzing the nutrition contribution of food organism with IsoSource Software,the research found Caprellidae's average nutrition contribution to S.marmoratus was the greatest,i.e.22.3%,and that of the fishes,shrimp and crabs was all above 12%.Based on the δ15N value of S.marmoratus of Gouqi Island offshore waters,the average trophic level was 3.18,indicating that the S.marmoratus was of low-level carnivores feeding on Caprellidae.The research found that S.marmoratus was benthos feeders rather than zooplankton feeders and Caprellidae,fish,shrimp and crabs etc.were the main food source.
Keywords:Sebastiscus marmoratus  stable isotope  feeding habits  trophic level
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