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Fully equipped to succeed : migratory contingents seen as an intrinsic potential for striped bass to exploit a heterogeneous environment early in fife

Morissette Olivier, Lecomte Frédéric, Verreault Guy, Legault Michel et Sirois Pascal. (2016). Fully equipped to succeed : migratory contingents seen as an intrinsic potential for striped bass to exploit a heterogeneous environment early in fife. Estuaries and Coasts, 39, (2), p. 571-582.

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URL officielle: https://dx.doi.org/doi:10.1007/s12237-015-0015-7

Résumé

Migratory contingents, groups of individuals belonging to the same population that adopt different migratory patterns, have been identified in numerous Striped Bass (Morone saxatilis) populations along North American East Coast. We tested the hypothesis that migratory contingents may develop early in life to maximize the exploitation of the variety of habitats faced by a recently introduced fish population. Using the discriminatory power provided by otolith chemistry, we studied early-life history stages of Striped Bass in a recently reintroduced population in the St. Lawrence Estuary. Migratory patterns were inferred using multivariate analysis of four otolith trace elements (Sr, Ba, Mn, and Mg) on juveniles (0+ and 1+). Three migratory contingents were identified during early-life history stages: freshwater residents, oligohaline migrants, and mesohaline migrants. This study demonstrates the rapid establishment, in less than 10 years since initial stocking, of three migratory contingents initiated early in life among the St. Lawrence Striped Bass population. We postulate that diversification provided by the establishment of distinct migratory contingents among early-life history stages promotes the rapid colonization of new environments through the exploration and exploitation of an increased number of nursery habitats.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:1559-2723
Volume:39
Numéro:2
Pages:p. 571-582
Version évaluée par les pairs:Oui
Date:2016
Identifiant unique:10.1007/s12237-015-0015-7
Sujets:Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
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:migratory contingent, striped bass, otolith chemistry, LA-ICP-MS, split-moving window
Informations complémentaires:This version of the article has been accepted for publication, after peer review and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://dx.doi.org/doi:10.1007/s12237-015-0015-7
Déposé le:29 nov. 2022 15:43
Dernière modification:15 juin 2023 16:01
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