Trophic ecology of commercial-size meagre, Argyrosomus regius, in the Bay of Biscay (NE Atlantic)★
| العنوان: | Trophic ecology of commercial-size meagre, Argyrosomus regius, in the Bay of Biscay (NE Atlantic)★ |
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| المؤلفون: | Jérôme Spitz, Barbara Hubans, Paco Bustamante, Anne Boiron, Françoise Mornet, Marie-Laure Bégout, Tiphaine Chouvelon, Yann Coupeau, Lillian Ducci, Gérard Biais |
| المساهمون: | Laboratoire Ressources Halieutiques (LRH), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Ecologie Marine et BIOdiversité (EMBIO), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche sur les Ecosystèmes Littoraux Anthropisés (CRELA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Université Grenoble Alpes - UFR Langage, lettres et arts du spectacle, information et communication - Dpt Lettres et arts du spectacle (UGA UFR LLASIC LAS), Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Toulon (UTLN), Université Grenoble Alpes - UFR Langage, lettres et arts du spectacle, information et communication - Dpt Lettres et arts du spectacle (UGA UFR LLASIC LAS ), Unité Biogéochimie et Ecotoxicologie, Observatoire PELAGIS UMS 3462 (PELAGIS), Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Aquatic Living Resources Aquatic Living Resources, EDP Sciences, 2017, 30, pp.9. ⟨10.1051/alr/2017004⟩ Aquatic Living Resources, EDP Sciences, 2017, 30, pp.9. ⟨10.1051/alr/2017004.s001⟩ Aquatic Living Resources, 2017, 30, pp.9. ⟨10.1051/alr/2017004⟩ Aquatic Living Resources (0990-7440) (Edp Sciences S A), 2017-03, Vol. 30, N. 9, P. 1-10 |
| بيانات النشر: | HAL CCSD, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, [SDV]Life Sciences [q-bio], Population, Aquatic Science, Argyrosomus regius, Sciaenidae, 010603 evolutionary biology, 01 natural sciences, Marine top predators, Predation, Demersal fish, Anchovy, [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology, 14. Life underwater, education, Trophic level, education.field_of_study, biology, Ecology, 010604 marine biology & hydrobiology, SIAR, biology.organism_classification, Whiting, Diet, Fishery, Ontogeny, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, Bay, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis |
| الوصف: | In the north-eastern Atlantic, meagre (Argyrosomus regius) is one of the largest fish living on the shelf and this species has important commercial interest. Over the past two decades, large variations in meagre abundance have been observed with pluri-annual cycles but the factors involved in such variations are still unclear. Trophic interactions between meagre and other species (both prey and competitors) might be one explanatory variable of the observed variations in meagre recruitment and abundance. In the present study, we described the diet of commercial-size meagre in the Bay of Biscay from stomach content and stable isotope analyses, and explored its dietary ontogeny. We found that commercial-size meagres were mostly piscivorous with a diet dominated by clupeiform fish (mainly anchovy and sardine) completed by demersal fish (mainly pout and whiting). Cannibalism also accounted for a non-negligible part of the diet. Interestingly, stable isotope and stomach content analyses showed only a very slight increase in prey length and trophic level during the ontogeny of large meagre after 50 cm of total length and despite a 3 fold-change of the individual length in our sampling. Our results suggested that specific trophic interactions (i.e. bottom-up control by clupeiform fish on meagre population, competitive effects on piscivorous populations or top-down control by meagre on clupeiform fish populations) may occur in the Bay of Biscay and can impact meagre abundance dynamics. Our study underlined the interest to enhance ecological knowledge of prey-predator relationships in the development of ecosystem-based approach to understand trophic controls impacting aquatic living resources and fishery economy. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0990-7440 1765-2952 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d7c335df1531586380e3b87c7a8d6a1 https://hal.archives-ouvertes.fr/hal-01520772v2/file/alr160095.pdf |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....2d7c335df1531586380e3b87c7a8d6a1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 09907440 17652952 |
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