Feeding ecology of hairtail Trichiurus margarites and largehead hairtail Trichiurus lepturus in the Beibu Gulf, the South China Sea

IOCAS-IR

	Feeding ecology of hairtail Trichiurus margarites and largehead hairtail Trichiurus lepturus in the Beibu Gulf, the South China Sea
	Yan YR(颜云榕); Hou G(侯刚); Chen JL(陈骏岚); Lu HS(卢伙胜); Jin XS(金显仕)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2011-01-15
出版年	2011
卷号	v.29 期号:01 页码:176-185
文献类型	CNKI期刊论文
摘要	We evaluated the feeding ecology of largehead hairtail (Trichiurus lepturus) and hairtail (T. margarites). We collected specimens from fishing ports in the Beibu Gulf (Gulf of Tonkin) from October 2008 to September 2009 and analyzed their gut contents. We collected 857 T. lepturus and 666 T. margarites samples. The number of stomachs examined in this study was sufficient to describe the monthly and ontogenetic diet shifts for the two species, as indicated by the trophic diversity curves. T. lepturus was a general omnivore, feeding primarily on Bregmaceros rarisquamosu, Decapterus maruadsi, and Acetes chinensis. Conversely, T. margarites preyed primarily on D. maruadsi, B. rarisquamosus, B. nectabanus, and A. chinensis. Both species exhibited distinct ontogenetic diet shifts. Although the two hairtail specie fed on similar sources in the same habitat, the diet overlap was relatively low. Our results suggest that hairtail play an important role in controlling small pelagic and benthic fish populations in the gulf. This trophic correlation shall be used for developing a marine ecosystem model for the Beibu Gulf.
关键词	feeding ecology Trichiurus margarites Trichiurus lepturus ontogenetic diet shift the Beibu Gulf South China Sea
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S917.4
收录类别	中科院核心
语种	英文;
资助项目(基金）	Supported by the National Natural Science Foundation of China (No.30771653) ; the Bureau of Fisheries,Ministry of Agriculture,Department of Education of Guangdong Province (No.LYM09089) ; Guangdong Ocean University (No.2009-11)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191846
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.CollegeofFisheriesandCenterofSouthChinaSeaFisheriesResourcesMonitoringandAssessment,GuangdongOceanUniversity 3.GraduateUniversityofChineseAcademyofSciences 4.YellowSeaFisheriesResearchInstitute,ChineseAcademyofFisheriesSciences
推荐引用方式 GB/T 7714	Yan YR,Hou G,Chen JL,et al. Feeding ecology of hairtail Trichiurus margarites and largehead hairtail Trichiurus lepturus in the Beibu Gulf, the South China Sea. 2011.