Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines
This study deals with important methodology issues that affect age estimates of eastern Atlantic bluefin tuna Thunnus thynnus using dorsal fin spines. Nearly 3800 spine sections were used from fish caught in the north-east Atlantic Ocean and western Mediterranean Sea over a 21 year period. Edge type...
Published in: | Journal of Fish Biology |
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2023
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Online Access: | http://hdl.handle.net/10508/1862 http://hdl.handle.net/10261/327158 https://doi.org/10.1111/jfb.12406 |
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ftcsic:oai:digital.csic.es:10261/327158 2024-02-11T10:06:53+01:00 Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines Luque, P.L. Rodriguez-Marin, Enrique Ruiz, Marta Quelle, Pablo Landa, Jorge Macías-López, Ángel David Ortiz-de-Urbina-Gutiérrez José María Mediterranean Sea Western Mediterranean Sea 2023-06-21T10:37:21Z http://hdl.handle.net/10508/1862 http://hdl.handle.net/10261/327158 https://doi.org/10.1111/jfb.12406 unknown Centro Oceanográfico de Santander AM Journal of Fish Biology, . : - http://hdl.handle.net/10508/1862 http://hdl.handle.net/10261/327158 doi:10.1111/jfb.12406 6703 none Centro Oceanográfico de Santander Pesquerías research article 2023 ftcsic https://doi.org/10.1111/jfb.12406 2024-01-16T11:48:50Z This study deals with important methodology issues that affect age estimates of eastern Atlantic bluefin tuna Thunnus thynnus using dorsal fin spines. Nearly 3800 spine sections were used from fish caught in the north-east Atlantic Ocean and western Mediterranean Sea over a 21 year period. Edge type and marginal increment analyses indicated a yearly periodicity of annulus formation with the translucent bands (50% of occurrence) appearing from October to May. Nucleus vascularization seriously affected specimens older than 6 years, with the disappearance of 40-50% of the presumed annuli by that age. An alternate sectioning location was a clear improvement and this finding is an important contribution to the methodology of using this structure for ageing the full-length range of eastern T. thynnus. Finally, there were no significant differences between the coefficients of von Bertalanffy growth model estimated from mean length at age data (L∞ = 327.4; k = 0.097; t0 = -0.838) and those estimated from the growth curves accepted for the eastern and western T. thynnus management units. Sí Article in Journal/Newspaper North East Atlantic Digital.CSIC (Spanish National Research Council) Journal of Fish Biology 84 6 1876 1903 |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
unknown |
topic |
Centro Oceanográfico de Santander Pesquerías |
spellingShingle |
Centro Oceanográfico de Santander Pesquerías Luque, P.L. Rodriguez-Marin, Enrique Ruiz, Marta Quelle, Pablo Landa, Jorge Macías-López, Ángel David Ortiz-de-Urbina-Gutiérrez José María Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
topic_facet |
Centro Oceanográfico de Santander Pesquerías |
description |
This study deals with important methodology issues that affect age estimates of eastern Atlantic bluefin tuna Thunnus thynnus using dorsal fin spines. Nearly 3800 spine sections were used from fish caught in the north-east Atlantic Ocean and western Mediterranean Sea over a 21 year period. Edge type and marginal increment analyses indicated a yearly periodicity of annulus formation with the translucent bands (50% of occurrence) appearing from October to May. Nucleus vascularization seriously affected specimens older than 6 years, with the disappearance of 40-50% of the presumed annuli by that age. An alternate sectioning location was a clear improvement and this finding is an important contribution to the methodology of using this structure for ageing the full-length range of eastern T. thynnus. Finally, there were no significant differences between the coefficients of von Bertalanffy growth model estimated from mean length at age data (L∞ = 327.4; k = 0.097; t0 = -0.838) and those estimated from the growth curves accepted for the eastern and western T. thynnus management units. Sí |
format |
Article in Journal/Newspaper |
author |
Luque, P.L. Rodriguez-Marin, Enrique Ruiz, Marta Quelle, Pablo Landa, Jorge Macías-López, Ángel David Ortiz-de-Urbina-Gutiérrez José María |
author_facet |
Luque, P.L. Rodriguez-Marin, Enrique Ruiz, Marta Quelle, Pablo Landa, Jorge Macías-López, Ángel David Ortiz-de-Urbina-Gutiérrez José María |
author_sort |
Luque, P.L. |
title |
Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
title_short |
Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
title_full |
Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
title_fullStr |
Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
title_full_unstemmed |
Direct ageing of Atlantic Bluefin tuna (Thunnus thynnus) from East Atlantic and Western Mediterranean using dorsal fin spines |
title_sort |
direct ageing of atlantic bluefin tuna (thunnus thynnus) from east atlantic and western mediterranean using dorsal fin spines |
publishDate |
2023 |
url |
http://hdl.handle.net/10508/1862 http://hdl.handle.net/10261/327158 https://doi.org/10.1111/jfb.12406 |
op_coverage |
Mediterranean Sea Western Mediterranean Sea |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
Centro Oceanográfico de Santander AM Journal of Fish Biology, . : - http://hdl.handle.net/10508/1862 http://hdl.handle.net/10261/327158 doi:10.1111/jfb.12406 6703 |
op_rights |
none |
op_doi |
https://doi.org/10.1111/jfb.12406 |
container_title |
Journal of Fish Biology |
container_volume |
84 |
container_issue |
6 |
container_start_page |
1876 |
op_container_end_page |
1903 |
_version_ |
1790604893413703680 |