elemental microchemistry, fatty acid profile and geometric morphometrics signatures of goose barnacles (pollicipes pollicipes) reveal their place of origin
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2014
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Abstract
Seafood plays an important role in the socioeconomic, gastronomy and cultural heritage of Portuguese coastal communities. In the Iberian Peninsula, the goose barnacle Pollicipes pollicipes is the intertidal biological resource most heavily exploited by man, resulting on overexploitation of stocks. In the MPA of BNR P.pollicipes harvesting is however strictly regulated, making it a good example of marine resources management. Analytical methods able to identify the origin of goose barnacle would be an important tool to help the management of the trade. For such purpose, we investigated whether P. pollicipes have site-specific differences based on its elemental microchemistry (EM), fatty acid profile (FA) and capitulum shape (CS). The analysis was performed on specimens collected from 3 sites in the BNR and 7 along a 300 km stretch of the Portuguese coast. For each individual we analysed the largest lateral shell for EM using ICP-MS, the FA content of the muscle using GC-FID, and the CS using geometric morphometrics. Discriminant function analyses (DFA) for both EM and FA separately provided a high reclassification success (77.6% and 99% respectively, of cross-validated cases correctly classified), while for EM combined with FA allowed for a 100% reclassification success. DFA analysis based only on CS, revealed a low classification success (29.6%). These results show that EM and FA signatures can be a powerful tool to infer goose barnacles origin. Such “fingerprinting” approach can be used to track and identify goose barnacles origin, helping in establishing an origin certificate and increasing the potential value of biological resources from Portuguese MPAs.
| Reference Key |
albuquerque2014frontierselemental
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|---|---|
| Authors | ;Rui Albuquerque;Rui Albuquerque |
| Journal | journal of aquatic food product technology |
| Year | 2014 |
| DOI |
10.3389/conf.fmars.2014.02.00120
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