Fortin William, Morissette Olivier, Lavoie Serge, Mingelbier Marc et Sirois Pascal. (2024). Matching the elemental fingerprints of fish otoliths with water masses of the St. Lawrence River and its tributaries, Canada. Canadian Journal of Fisheries and Aquatic Sciences, 81, (7), p. 887-903.
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URL officielle: https://doi.org/10.1139/cjfas-2023-0097
Résumé
The physicochemical heterogeneity of large river ecosystems generates a mosaic of habitats that support diverse fish communities. Understanding the connectivity between habitats and exploited fish populations is necessary for the sustainable management of fisheries. This study evaluates the spatial concordance between elemental fingerprints of fish otoliths and surface waters in the St. Lawrence River (Canada) and its tributaries. We sampled 16 tributaries and various freshwater habitats of the St. Lawrence River and collected 136 water samples and 930 fish, representing 21 species. We observed a high spatial variability of trace element composition in the water and fish otolith samples. Reclassification using Sr and Ba concentrations of the collected water and otoliths was sufficiently accurate to correctly assign most fish to their capture region. We also observed significant variation in the elemental deposition relationships for Sr and Ba among fish families. The development of this elemental fingerprint reference database is fundamental for understanding the structure of exploited fish populations, validating the connectivity among habitats, and reconstructing habitat use by invasive fish species.
Type de document: | Article publié dans une revue avec comité d'évaluation |
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ISSN: | 0706-652X |
Volume: | 81 |
Numéro: | 7 |
Pages: | p. 887-903 |
Version évaluée par les pairs: | Oui |
Date: | 1 Juillet 2024 |
Nombre de pages: | 17 |
Identifiant unique: | 10.1139/cjfas-2023-0097 |
Sujets: | Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes Sciences naturelles et génie > Sciences naturelles > Chimie |
Département, module, service et unité de recherche: | Départements et modules > Département des sciences fondamentales Unités de recherche > Centre de recherche sur la Boréalie (CREB) Unités de recherche > Chaire de recherche sur les espèces aquatiques exploitées (CREAE) |
Mots-clés: | habitat connectivity, otolith elemental fingerprints, water chemistry, partition coefficient |
Déposé le: | 29 janv. 2025 00:42 |
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Dernière modification: | 29 janv. 2025 00:42 |
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