【摘 要】
:
To clarify the dietary composition of the wild large yellow croaker (Larimichthys crocea),579 specimens,collected in the waters of Guanjing Yang,Fujian province
【机 构】
:
DepartmentofOceanography,XiamenUniversity,Xiamen361005,China
【出 处】
:
The 3rd Joint-Postgraduate Symposium(第三届高校研究生水环境科学研讨会)
论文部分内容阅读
To clarify the dietary composition of the wild large yellow croaker (Larimichthys crocea),579 specimens,collected in the waters of Guanjing Yang,Fujian province,during June 2010,were examined for stomach contents.Parameters such as occurrence frequency (F%),individual number (N%),weight percentage (W%) and index of relative importance (IRI) were adopted in the study.Food list was compared with zooplankton component and nektonic organism of water area near the sampling areas.It is indicated that as many as 32 species occurred in the diet,and the wild large yellow croaker mainly preys on decapoda,fishes,euphausiacea,mysidacea,amphipoda,crabs,copepoda and Stomatopoda.Decapoda (%IRI=55.97%) and fish (%IRI=26.61%) were found to be the most important prey groups in the diet.Euphausiacea (%IRI=10.01%) and mysidacea (%IRI=3.2%) constituted the second most important prey groups.Leptochela gracilis (IRI=976.10,%IRI=59.80%) and Pseudeuphausia sinica (IRI=505.27,% IRI=30.95%),were the most important species as preys.So the wild large yellow croaker is omnivorous,mainly feeding on decapoda,fishes,and macro zooplankton.
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