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The use of stable isotope ratio analyses to discriminate wild and farmed gilthead sea bream ( Sparus aurata )
Author(s) -
Rojas Jose Manuel Moreno,
Serra Francesca,
Giani Ivan,
Moretti Vittorio M.,
Reniero Fabiano,
Guillou Claude
Publication year - 2006
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.2836
Subject(s) - chemistry , fishery , sparidae , zoology , stable isotope ratio , fish <actinopterygii> , biology , physics , quantum mechanics
Continuous flow isotope ratio mass spectrometry (CF‐IRMS) has been used to analyze samples of gilthead sea bream (g.s.b.) ( Sparus aurata ) of known geographical origin (four countries on the Mediterranean Sea) from wild and farmed sources (40 farmed and 10 wild). δ 13 C and δ 15 N values have been measured on muscle samples as these are the most informative parameters of the diet of the animals. Both stable isotopes are indicators of the origin of the fish: δ 13 C giving a tool to distinguish between wild and farmed g.s.b. and δ 15 N being more informative on the geographical origin of the fish (this fact could be related more to differences in feed mixtures given to farmed fish than to geographical reasons). The proposed methodology offers a cost‐ and time‐effective alternative to other analytical techniques in identifying wild and farmed fish. Copyright © 2006 John Wiley & Sons, Ltd.