Traceability and discrimination among differently farmed fish : a case study on Australian murray cod

The development of traceability methods to distinguish between farmed and wild-caught fish and seafood is becoming increasingly important. However, very little is known about how to distinguish fish originating from different farms. The present study addresses this issue by attempting to discriminat...

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Bibliographic Details
Main Authors: Giovanni Turchini, Gerry Quinn, Paul Jones, Giorgio Palmeri, G Gooley
Format: Other Non-Article Part of Journal/Newspaper
Language:unknown
Published: 2009
Subjects:
Uncategorized
aquaculture
chemiometric
discriminant function analysis
fatty acids
Maccullochella peelii peelii
stable isotopes
product tracing
Science & Technology
Life Sciences & Biomedicine
Physical Sciences
Agriculture
Multidisciplinary
Chemistry
Applied
Food Science & Technology
MACCULLOCHELLA-PEELII-PEELII
BASS DICENTRARCHUS-LABRAX
FATTY-ACID-METABOLISM
FRESH-WATER FISH
QUALITY CHARACTERISTICS
ATLANTIC SALMON
NATIVE FISH
WILD
CONSUMERS
SYSTEM
Atlantic salmon
Online Access:http://hdl.handle.net/10536/DRO/DU:30021027
https://figshare.com/articles/journal_contribution/Traceability_and_discrimination_among_differently_farmed_fish_a_case_study_on_Australian_murray_cod/21046444
Description
Summary:The development of traceability methods to distinguish between farmed and wild-caught fish and seafood is becoming increasingly important. However, very little is known about how to distinguish fish originating from different farms. The present study addresses this issue by attempting to discriminate among intensively farmed freshwater Murray cod originating from different farms (indoor recirculating, outdoor floating cage, and flow through systems) in different geographical areas, using a combination of morphological, chemical, and isotopic analyses. The results show that stable isotopes are the most informative variables. In particular, δ13C and/or δ15N clearly linked fish to a specific commercial diet, while δ18O linked fish to a specific water source. Thus, the combination of these isotopes can distinguish among fish originating from different farms. On the contrary, fatty acid and tissue proximate compositions and morphological parameters, which are useful in distinguishing between farmed and wild fish, are less informative in discriminating among fish originating from different farms.

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