Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna
Assessment and management of Atlantic bluefin tuna Thunnus thynnus populations is hindered by our lack of knowledge regarding trans-Atlantic movement and connectivity of east- ern and western populations. Here, we evaluated migratory and homing behaviors of bluefin tuna in several regions of the Nor...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Centro Oceanográfico de Málaga
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/10508/2588 https://doi.org/10.3354/meps10781 |
id |
ftieo:oai:repositorio.ieo.es:10508/2588 |
---|---|
record_format |
openpolar |
spelling |
ftieo:oai:repositorio.ieo.es:10508/2588 2023-05-15T17:30:54+02:00 Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna Rooker, J.R. (Jay R.) Arrizabalaga, H. (Haritz) Fraile, I. Dettman, D.L. Abid, N. Addis, S. Deguara, F.S. Karakulak, F.S. (F. Saadet) Kimoto, A. Sakai, O. Macías-López, A.D. (Ángel David) Neves Santos, M. Atlantic Ocean Central Atlantic Eastern Central Atlantic Moroccan waters 2014-05 http://hdl.handle.net/10508/2588 https://doi.org/10.3354/meps10781 eng eng Centro Oceanográfico de Málaga http://hdl.handle.net/10508/2588 Marine Ecology Progress-Series, 504. 2014: 265-276 doi:10.3354/meps10781 open access Stable isotopes Nursery origin Otolith chemistry Stock structure Population research article AM 2014 ftieo https://doi.org/10.3354/meps10781 2022-12-14T00:47:13Z Assessment and management of Atlantic bluefin tuna Thunnus thynnus populations is hindered by our lack of knowledge regarding trans-Atlantic movement and connectivity of east- ern and western populations. Here, we evaluated migratory and homing behaviors of bluefin tuna in several regions of the North Atlantic Ocean and Mediterranean Sea using chemical tags ( δ 13 C and δ 18 O) in otoliths. Significant emigration of bluefin tuna from their place of origin was inferred from otolith δ 13 C and δ 18 O, with both eastern and western bluefin tuna commonly ‘crossing the line’ (45° W management boundary) in the Central North Atlantic Ocean and mixing with the other population. Several western migrants were also detected in Moroccan traps off the coast of Africa, indicating that trans-Atlantic movement occurs for members of the western population; however, the degree of mixing declined with proximity to the eastern spawning area (Mediterran- ean Sea). The origin of bluefin tuna collected at the entrance to the Strait of Gibraltar and from several regions within the Mediterranean Sea (Balearic Islands, Malta, and Sardinia) was essen- tially 100% eastern fish, demonstrating that natal homing is well developed by the eastern popu- lation, with western migrants rarely entering the Mediterranean Sea. Article in Journal/Newspaper North Atlantic Instituto Español de Oceanografía: e-IEO Marine Ecology Progress Series 504 265 276 |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Stable isotopes Nursery origin Otolith chemistry Stock structure Population |
spellingShingle |
Stable isotopes Nursery origin Otolith chemistry Stock structure Population Rooker, J.R. (Jay R.) Arrizabalaga, H. (Haritz) Fraile, I. Dettman, D.L. Abid, N. Addis, S. Deguara, F.S. Karakulak, F.S. (F. Saadet) Kimoto, A. Sakai, O. Macías-López, A.D. (Ángel David) Neves Santos, M. Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
topic_facet |
Stable isotopes Nursery origin Otolith chemistry Stock structure Population |
description |
Assessment and management of Atlantic bluefin tuna Thunnus thynnus populations is hindered by our lack of knowledge regarding trans-Atlantic movement and connectivity of east- ern and western populations. Here, we evaluated migratory and homing behaviors of bluefin tuna in several regions of the North Atlantic Ocean and Mediterranean Sea using chemical tags ( δ 13 C and δ 18 O) in otoliths. Significant emigration of bluefin tuna from their place of origin was inferred from otolith δ 13 C and δ 18 O, with both eastern and western bluefin tuna commonly ‘crossing the line’ (45° W management boundary) in the Central North Atlantic Ocean and mixing with the other population. Several western migrants were also detected in Moroccan traps off the coast of Africa, indicating that trans-Atlantic movement occurs for members of the western population; however, the degree of mixing declined with proximity to the eastern spawning area (Mediterran- ean Sea). The origin of bluefin tuna collected at the entrance to the Strait of Gibraltar and from several regions within the Mediterranean Sea (Balearic Islands, Malta, and Sardinia) was essen- tially 100% eastern fish, demonstrating that natal homing is well developed by the eastern popu- lation, with western migrants rarely entering the Mediterranean Sea. |
format |
Article in Journal/Newspaper |
author |
Rooker, J.R. (Jay R.) Arrizabalaga, H. (Haritz) Fraile, I. Dettman, D.L. Abid, N. Addis, S. Deguara, F.S. Karakulak, F.S. (F. Saadet) Kimoto, A. Sakai, O. Macías-López, A.D. (Ángel David) Neves Santos, M. |
author_facet |
Rooker, J.R. (Jay R.) Arrizabalaga, H. (Haritz) Fraile, I. Dettman, D.L. Abid, N. Addis, S. Deguara, F.S. Karakulak, F.S. (F. Saadet) Kimoto, A. Sakai, O. Macías-López, A.D. (Ángel David) Neves Santos, M. |
author_sort |
Rooker, J.R. (Jay R.) |
title |
Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
title_short |
Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
title_full |
Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
title_fullStr |
Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
title_full_unstemmed |
Crossing the line: migratory and homing behaviours of Atlantic bluefin tuna |
title_sort |
crossing the line: migratory and homing behaviours of atlantic bluefin tuna |
publisher |
Centro Oceanográfico de Málaga |
publishDate |
2014 |
url |
http://hdl.handle.net/10508/2588 https://doi.org/10.3354/meps10781 |
op_coverage |
Atlantic Ocean Central Atlantic Eastern Central Atlantic Moroccan waters |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://hdl.handle.net/10508/2588 Marine Ecology Progress-Series, 504. 2014: 265-276 doi:10.3354/meps10781 |
op_rights |
open access |
op_doi |
https://doi.org/10.3354/meps10781 |
container_title |
Marine Ecology Progress Series |
container_volume |
504 |
container_start_page |
265 |
op_container_end_page |
276 |
_version_ |
1766128042010214400 |