Stable carbon and nitrogen isotopes as indicators of habitat selection by cultured and natural fish preferences: a case study of ayu

Wei Huang, Xixi Chen, Xiaobo Liu, Shinichiro Yano

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Reliable indicators on whether natural and cultured fish exhibit differences in habitat preferences are lacking. In this study, δ13C and δ15N were used to distinguish the habitat preferences of cultured versus natural ayu and their prey (periphyton) in a typical riffle-pool river reach. It found that the δ13C of natural ayu (−13.747‰) was consistent with that of periphyton in riffles (−14.611‰), while the δ13C of cultured ayu (−19.088‰) was consistent with that of periphyton (−19.711‰) in pools. The results indicated that cultured ayu appear to favor pools whereas natural ayu favor riffles, and δ13C and δ15N represent potential reliable indicators of habitat preferences of cultured ayu.

Original languageEnglish
Pages (from-to)871-877
Number of pages7
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume314
Issue number2
DOIs
Publication statusPublished - Nov 1 2017

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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