Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock

The Fish Ageing Services laboratory (FAS) was contracted by ICCAT GBYP in Phase 7 to provide age estimates from 2000 Atlantic bluefin tuna otolith samples. With the objective of ensuring that age readings provided by FAS follow the ICCAT reviewed reading protocol, a sub-sample calibration exercise w...

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Detalles Bibliográficos
Autores: Rodriguez-Marin, Enrique, Addis, Piero, Allman, R., Bellodi, A., Busawon, Dheeraj, Garibaldi, Fulvio, Luque, P.L., Quelle, Pablo
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/322061
Acceso en línea:http://hdl.handle.net/10261/322061
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de A Coruña
Age estimation
Pesquerías
otolith
standardization
Thunnus thynnus
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repository_id_str
spelling Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stockRodriguez-Marin, EnriqueAddis, PieroAllman, R.Bellodi, A.Busawon, DheerajGaribaldi, FulvioLuque, P.L.Quelle, PabloCentro Oceanográfico de A CoruñaAge estimationPesqueríasotolithstandardizationThunnus thynnusThe Fish Ageing Services laboratory (FAS) was contracted by ICCAT GBYP in Phase 7 to provide age estimates from 2000 Atlantic bluefin tuna otolith samples. With the objective of ensuring that age readings provided by FAS follow the ICCAT reviewed reading protocol, a sub-sample calibration exercise was carried out. The findings show that band counts are similar between FAS and the group of laboratories involved in direct ageing. This is reflected by an acceptable precision between both readings. However, there is a one-year bias in the count of bands in older specimens, starting from 10-13 years of age, with a lower count by FAS compared to the rest of the laboratories. This bias seems to be due to the fact that FAS counts the bands in a different area of the otolith ventral arm than other laboratories. This counting discrepancy, although small, is significant and it would be necessary for FAS to reread the samples of specimens older than 10 years using the area close to the sulcus margin of the ventral arm.202320232020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/322061reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de A Coruñainfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3220612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
title Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
spellingShingle Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
Rodriguez-Marin, Enrique
Centro Oceanográfico de A Coruña
Age estimation
Pesquerías
otolith
standardization
Thunnus thynnus
title_short Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
title_full Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
title_fullStr Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
title_full_unstemmed Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
title_sort Calibration of the fish ageing services readings carried out in GBYP Phase 7, to estimate age of bluefin tuna from the eastern Atlantic stock
dc.creator.none.fl_str_mv Rodriguez-Marin, Enrique
Addis, Piero
Allman, R.
Bellodi, A.
Busawon, Dheeraj
Garibaldi, Fulvio
Luque, P.L.
Quelle, Pablo
author Rodriguez-Marin, Enrique
author_facet Rodriguez-Marin, Enrique
Addis, Piero
Allman, R.
Bellodi, A.
Busawon, Dheeraj
Garibaldi, Fulvio
Luque, P.L.
Quelle, Pablo
author_role author
author2 Addis, Piero
Allman, R.
Bellodi, A.
Busawon, Dheeraj
Garibaldi, Fulvio
Luque, P.L.
Quelle, Pablo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de A Coruña
Age estimation
Pesquerías
otolith
standardization
Thunnus thynnus
topic Centro Oceanográfico de A Coruña
Age estimation
Pesquerías
otolith
standardization
Thunnus thynnus
description The Fish Ageing Services laboratory (FAS) was contracted by ICCAT GBYP in Phase 7 to provide age estimates from 2000 Atlantic bluefin tuna otolith samples. With the objective of ensuring that age readings provided by FAS follow the ICCAT reviewed reading protocol, a sub-sample calibration exercise was carried out. The findings show that band counts are similar between FAS and the group of laboratories involved in direct ageing. This is reflected by an acceptable precision between both readings. However, there is a one-year bias in the count of bands in older specimens, starting from 10-13 years of age, with a lower count by FAS compared to the rest of the laboratories. This bias seems to be due to the fact that FAS counts the bands in a different area of the otolith ventral arm than other laboratories. This counting discrepancy, although small, is significant and it would be necessary for FAS to reread the samples of specimens older than 10 years using the area close to the sulcus margin of the ventral arm.
publishDate 2020
dc.date.none.fl_str_mv 2020
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/322061
url http://hdl.handle.net/10261/322061
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de A Coruña
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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