Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions
We investigated the habitat utilization, vertical and horizontal behaviour of Atlantic bluefin tuna Thunnus thynnus (ABFT) in relation to oceanographic conditions in the northwestern Mediterranean Sea, based on 36 pop-up archival tags and different environmental data sets. Tags were deployed on earl...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | https://hal.science/hal-04201864 https://doi.org/10.1016/j.dsr2.2017.04.006 |
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ftunimontpellier:oai:HAL:hal-04201864v1 2024-02-11T10:06:41+01:00 Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions Bauer, Robert Klaus Fromentin, Jean-Marc Demarcq, Herve Bonhommeau, Sylvain MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Délégation Océan Indien (DOI) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2017-07 https://hal.science/hal-04201864 https://doi.org/10.1016/j.dsr2.2017.04.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2017.04.006 hal-04201864 https://hal.science/hal-04201864 doi:10.1016/j.dsr2.2017.04.006 ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-04201864 Deep Sea Research Part II: Topical Studies in Oceanography, 2017, 141, pp.248-261. ⟨10.1016/j.dsr2.2017.04.006⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2017 ftunimontpellier https://doi.org/10.1016/j.dsr2.2017.04.006 2024-01-23T23:35:28Z We investigated the habitat utilization, vertical and horizontal behaviour of Atlantic bluefin tuna Thunnus thynnus (ABFT) in relation to oceanographic conditions in the northwestern Mediterranean Sea, based on 36 pop-up archival tags and different environmental data sets. Tags were deployed on early mature ABFT (127–255 cm) between July and November in 2007-2014, on the shelf area off Marseille, France. The data obtained from these tags provided 1643 daily summaries of ABFT vertical behaviour over 8 years of tag deployment. Based on a hierarchical clustering of this data, we could identify four principle daily vertical behaviour types, representing surface (≦10m) and subsurface (10–100 m) orientation, moderate (50–200 m) and deep (≧200m) diving behaviour. These vertical behaviour types showed seasonal variations with partly opposing trends in their frequencies. Accordingly, ABFT were more surface orientated during summer, while moderate diving behaviour was more common during winter. Depth time series data further revealed inverted day-night patterns for both of these periods. Tagged ABFT frequented the surface waters more regularly during daytime and deeper waters during the night in summer, while the opposite pattern was found in winter. Seasonal changes in the vertical behaviour of ABFT were accompanied by simultaneous changes in environmental conditions (SST, chla, thermal stratification). Accordingly, surface orientation and moderate diving behaviour appeared to be triggered by the thermal stratification of the water column, though less pronounced than previously reported for ABFT in the North Atlantic, probably indicating adaptive vertical behaviour related to the availability of epipelagic food resources (anchovies and sardines). Deep diving behaviour was particularly frequent during months of high biological productivity (February-May), although one recovered tag showed periodic and unusual long spike dives during summer-autumn, in relation to thermal fronts. Regional effects on the vertical behaviour ... Article in Journal/Newspaper North Atlantic Université de Montpellier: HAL Deep Sea Research Part II: Topical Studies in Oceanography 141 248 261 |
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Université de Montpellier: HAL |
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ftunimontpellier |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Bauer, Robert Klaus Fromentin, Jean-Marc Demarcq, Herve Bonhommeau, Sylvain Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
We investigated the habitat utilization, vertical and horizontal behaviour of Atlantic bluefin tuna Thunnus thynnus (ABFT) in relation to oceanographic conditions in the northwestern Mediterranean Sea, based on 36 pop-up archival tags and different environmental data sets. Tags were deployed on early mature ABFT (127–255 cm) between July and November in 2007-2014, on the shelf area off Marseille, France. The data obtained from these tags provided 1643 daily summaries of ABFT vertical behaviour over 8 years of tag deployment. Based on a hierarchical clustering of this data, we could identify four principle daily vertical behaviour types, representing surface (≦10m) and subsurface (10–100 m) orientation, moderate (50–200 m) and deep (≧200m) diving behaviour. These vertical behaviour types showed seasonal variations with partly opposing trends in their frequencies. Accordingly, ABFT were more surface orientated during summer, while moderate diving behaviour was more common during winter. Depth time series data further revealed inverted day-night patterns for both of these periods. Tagged ABFT frequented the surface waters more regularly during daytime and deeper waters during the night in summer, while the opposite pattern was found in winter. Seasonal changes in the vertical behaviour of ABFT were accompanied by simultaneous changes in environmental conditions (SST, chla, thermal stratification). Accordingly, surface orientation and moderate diving behaviour appeared to be triggered by the thermal stratification of the water column, though less pronounced than previously reported for ABFT in the North Atlantic, probably indicating adaptive vertical behaviour related to the availability of epipelagic food resources (anchovies and sardines). Deep diving behaviour was particularly frequent during months of high biological productivity (February-May), although one recovered tag showed periodic and unusual long spike dives during summer-autumn, in relation to thermal fronts. Regional effects on the vertical behaviour ... |
author2 |
MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Délégation Océan Indien (DOI) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Bauer, Robert Klaus Fromentin, Jean-Marc Demarcq, Herve Bonhommeau, Sylvain |
author_facet |
Bauer, Robert Klaus Fromentin, Jean-Marc Demarcq, Herve Bonhommeau, Sylvain |
author_sort |
Bauer, Robert Klaus |
title |
Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
title_short |
Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
title_full |
Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
title_fullStr |
Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
title_full_unstemmed |
Habitat use, vertical and horizontal behaviour of Atlantic bluefin tuna ( Thunnus thynnus ) in the Northwestern Mediterranean Sea in relation to oceanographic conditions |
title_sort |
habitat use, vertical and horizontal behaviour of atlantic bluefin tuna ( thunnus thynnus ) in the northwestern mediterranean sea in relation to oceanographic conditions |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.science/hal-04201864 https://doi.org/10.1016/j.dsr2.2017.04.006 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.science/hal-04201864 Deep Sea Research Part II: Topical Studies in Oceanography, 2017, 141, pp.248-261. ⟨10.1016/j.dsr2.2017.04.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2017.04.006 hal-04201864 https://hal.science/hal-04201864 doi:10.1016/j.dsr2.2017.04.006 |
op_doi |
https://doi.org/10.1016/j.dsr2.2017.04.006 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
141 |
container_start_page |
248 |
op_container_end_page |
261 |
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1790604548003332096 |