Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt.
Updated information on growth of Atlantic chub mackerel in several areas of its distribution is required for the first stock assessment. Its growth pattern in Northern Iberian waters (2011-2017) is here analyzed with different approaches: those based on otoliths analyses (direct age estimation-DAE,...
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Centro Oceanográfico de Santander
2021
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ftieo:oai:repositorio.ieo.es:10508/12169 2023-05-15T17:41:30+02:00 Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. Navarro, M.R. (María Rosario) Landa, J. (Jorge) Villamor, B. (Begoña) Domínguez-Petit, R. (Rosario) 2011-2017 Océan atlantique Atlantique central Bay of Biscay Atlántico Central Atlantic Ocean Eastern Central Atlantic Central Atlantic Océano Atlántico Atlántico Centro-oriental Atlantique centre-est Golfo de Vizcaya 2021-01-25 http://hdl.handle.net/10508/12169 eng eng Centro Oceanográfico de Santander http://hdl.handle.net/10508/12169 WKCOLIAS2 - Workshop on Scomber colias 2. (25/01/2021 - 29/01/2021. Online meeting). 2021. Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND Scombridae Atlantic Ocean length frequency analysis Bhattacharya direct age estimation back-calculation growth curve otolith edge analysis fish growth corroboration workingPaper 2021 ftieo 2022-07-26T23:49:20Z Updated information on growth of Atlantic chub mackerel in several areas of its distribution is required for the first stock assessment. Its growth pattern in Northern Iberian waters (2011-2017) is here analyzed with different approaches: those based on otoliths analyses (direct age estimation-DAE, back-calculation-BC and otolith marginal analyses) and those based on length frequency analyses (Bhattacharya, SLCA and PROJMAT methods). Two main different growth patterns are obtained, a "slow" one based on DAE, BC and LFDA from surveys; and a "fast" one based on Bhattacharya and LFDA from commercial landings. The divergence between both patterns begins to be evident at age 3 and older. Otolith marginal analyses that show an annual periodicity in the formation of the hyaline and opaque edge, the unimodal distribution of the annuli radius and the similarity of the back-calculated mean lengths to those obtained by DAE, support the age estimation criteria used in our analysis. The VBGF growth parameters (L∞=45.34, k=0.28, t0=1.18) obtained by otolith age estimation are available for the upcoming stock assessment process. Report Northeast Atlantic Instituto Español de Oceanografía: e-IEO |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Scombridae Atlantic Ocean length frequency analysis Bhattacharya direct age estimation back-calculation growth curve otolith edge analysis fish growth corroboration |
spellingShingle |
Scombridae Atlantic Ocean length frequency analysis Bhattacharya direct age estimation back-calculation growth curve otolith edge analysis fish growth corroboration Navarro, M.R. (María Rosario) Landa, J. (Jorge) Villamor, B. (Begoña) Domínguez-Petit, R. (Rosario) Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
topic_facet |
Scombridae Atlantic Ocean length frequency analysis Bhattacharya direct age estimation back-calculation growth curve otolith edge analysis fish growth corroboration |
description |
Updated information on growth of Atlantic chub mackerel in several areas of its distribution is required for the first stock assessment. Its growth pattern in Northern Iberian waters (2011-2017) is here analyzed with different approaches: those based on otoliths analyses (direct age estimation-DAE, back-calculation-BC and otolith marginal analyses) and those based on length frequency analyses (Bhattacharya, SLCA and PROJMAT methods). Two main different growth patterns are obtained, a "slow" one based on DAE, BC and LFDA from surveys; and a "fast" one based on Bhattacharya and LFDA from commercial landings. The divergence between both patterns begins to be evident at age 3 and older. Otolith marginal analyses that show an annual periodicity in the formation of the hyaline and opaque edge, the unimodal distribution of the annuli radius and the similarity of the back-calculated mean lengths to those obtained by DAE, support the age estimation criteria used in our analysis. The VBGF growth parameters (L∞=45.34, k=0.28, t0=1.18) obtained by otolith age estimation are available for the upcoming stock assessment process. |
format |
Report |
author |
Navarro, M.R. (María Rosario) Landa, J. (Jorge) Villamor, B. (Begoña) Domínguez-Petit, R. (Rosario) |
author_facet |
Navarro, M.R. (María Rosario) Landa, J. (Jorge) Villamor, B. (Begoña) Domínguez-Petit, R. (Rosario) |
author_sort |
Navarro, M.R. (María Rosario) |
title |
Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
title_short |
Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
title_full |
Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
title_fullStr |
Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
title_full_unstemmed |
Growth, age estimation and corroboration of northeast Atlantic chub mackerel (Scomber colias) in northern Iberian waters: a first attempt. |
title_sort |
growth, age estimation and corroboration of northeast atlantic chub mackerel (scomber colias) in northern iberian waters: a first attempt. |
publisher |
Centro Oceanográfico de Santander |
publishDate |
2021 |
url |
http://hdl.handle.net/10508/12169 |
op_coverage |
2011-2017 Océan atlantique Atlantique central Bay of Biscay Atlántico Central Atlantic Ocean Eastern Central Atlantic Central Atlantic Océano Atlántico Atlántico Centro-oriental Atlantique centre-est Golfo de Vizcaya |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
http://hdl.handle.net/10508/12169 WKCOLIAS2 - Workshop on Scomber colias 2. (25/01/2021 - 29/01/2021. Online meeting). 2021. |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766143097020874752 |