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- W2384459462 abstract "Stable isotopes have been used in many research areas as natural labels,and are becoming the more appropriate option for the aquatic ecological studies.An organism's stable isotope ratios(δ15N and δ13C etc)are an integration of the isotopic signatures of preys that have been assimilated through time,the organism will come into isotopic equilibrium with its diets depending on growth and tissue turnover rates,the ratios can change with different food,are good labels of organism living conditions.According to the stable isotope ratio of an organism and preys,we can judge their food composition.Through determining the carbon and nitrogen stable isotope ratios of the different stations and different body length of Pseudosciaena polyactis and Johnius belengerii and their preys,we found that Odontamblyopus rubicundus,Chaeturichthys hexanema,Ctenotrypauchen chinensis,Harpadon nehereus,Palaemon gravieri and Squilla oratoria were the better preys than others for Pseudosciaena polyactis and Johnius belengerii.The carbon or nitrogen stable isotope ratios of Pseudosciaena polyactis.Johnius belengerii or some species of preys among different stations had significant difference.From theses results,we speculated that Pseudosciaena polyactis and Johnius belengerii had different habitat and feeding habit,Pseudosciaena polyactis had smaller habitat than Johnius belengerii,and fed on fishes mostly,while Johnius belengerii swim longer distance to look for preys,mostly be crustacea,in order to mitigate the food competition with Johnius belengerii." @default.
- W2384459462 created "2016-06-24" @default.
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- W2384459462 date "2009-01-01" @default.
- W2384459462 modified "2023-09-24" @default.
- W2384459462 title "Studies on Food Competition between Pseudosciaena polyactis and Johnius belengerii from Changjian Estuary and Adjacent Southern Yellow Sea in Autumn" @default.
- W2384459462 hasPublicationYear "2009" @default.
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