Evaluating genetic traceability methods for captive‑bred marine fish and their applications in fisheries management and wildlife forensics

Bylemans, Jonas, Maes, Gregory E., Diopere, Eveline, Cariani, Alessia, Senn, Helen, Taylor, Martin I., Helyar, Sarah, Bargelloni, Luca, Bonaldo, Alessio, Carvalho, Gary, Guarniero, Ilaria, Komen, Hans, Martinsohn, Jann Th., Nielsen, Einar E., Tinti, Fausto, Volckaert, Filip A.M., and Ogden, Rob (2016) Evaluating genetic traceability methods for captive‑bred marine fish and their applications in fisheries management and wildlife forensics. Aquaculture Environment Interactions , 8. pp. 131-145.

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Abstract

Growing demands for marine fish products is leading to increased pressure on already depleted wild populations and a rise in aquaculture production. Consequently, more captive-bred fish are released into the wild through accidental escape or deliberate releases. The increased mixing of captive-bred and wild fish may affect the ecological and/or genetic integrity of wild fish populations. Unambiguous identification tools for captive-bred fish will be highly valuable to manage risks (fisheries management) and tracing of escapees and seafood products (wildlife forensics). Using single nucleotide polymorphism (SNP) data from captive-bred and wild populations of Atlantic cod Gadus morhua L. and sole Solea solea L., we explored the efficiency of population and parentage assignment techniques for the identification and tracing of captive-bred fish. Simulated and empirical data were used to correct for stochastic genetic effects. Overall, parentage assignment performed well when a large effective population size characterized the broodstock and escapees originated from early generations of captive breeding. Consequently, parentage assignments are particularly useful from a fisheries management perspective to monitor the effects of deliberate releases of captive-bred fish on wild populations. Population assignment proved to be more efficient after several generations of captive breeding, which makes it a useful method in forensic applications for well-established aquaculture species. We suggest the implementation of a case-by-case strategy when choosing the best method.

Item ID: 42987
Item Type: Article (Research - C1)
ISSN: 1869-7534
Keywords: aquaculture, conservation genetics, escapees, fisheries management, wildlife forensics
Additional Information:

© The authors 2016. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are unrestricted. Authors and original publication must be credited.

Funders: European Commission Joint Research Centre (JRC), European Union (EU), Research Foundation-Flanders (RFF)
Projects and Grants: JRC AQUAGEN Project No. IPSC_2010_04_11_NC, EU FP7 Project FishPopTrace KBBE-2007-212399, EU Project Aqua-Trace KBBE-311920
Date Deposited: 01 Aug 2016 02:54
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 70%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070405 Fish Physiology and Genetics @ 30%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830102 Aquaculture Fin Fish (excl. Tuna) @ 50%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8399 Other Animal Production and Animal Primary Products > 839902 Fish Product Traceability and Quality Assurance @ 50%
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