文献类型：期刊文献

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

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

作者：Yan Yunrong[1,2,3,5];Hou Gang[1,2];Chen Junlan[1,2];Lu Huosheng[1,2];Jin Xianshi[4]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Ctr S China Sea Fisheries Resources Monitoring &, Zhanjiang 524088, Peoples R China;[3]Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China;[4]Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China;[5]Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

年份：2011

卷号：29

期号：1

起止页码：174

中文期刊名：Chinese Journal of Oceanology and Limnology

外文期刊名：CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000286203200023)、CSTPCD、、Scopus(收录号：2-s2.0-79955564084)、CSCD2011_2012、WOS、CSCD

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), and Guangdong Ocean University (No. 2009-11)

语种：英文

中文关键词：feeding ecology; Trichiurus margarites; Trichiurus lepturus; ontogenetic diet shift; the Beibu Gulf; South China Sea

外文关键词：feeding ecology; Trichiurus margarites; Trichiurus lepturus; ontogenetic diet shift; the Beibu Gulf; South China Sea

中文摘要：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.

外文摘要：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.