Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa)
In 1996 and 1997, a wide size range of greater fork-beard (Phycis blennoides Brünnich, 1768) was sampled from experimental and research surveys, trawlers and commercial landings from ICES Divisions VIIIc and IXa. Otoliths were collected and aged. Sectioned otoliths displayed numerous weakly marked r...
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Centro Oceanográfico de Vigo
2000
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Online Access: | http://hdl.handle.net/10508/6951 https://doi.org/10.1016/S0165-7836(00)00108-9 |
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ftieo:oai:repositorio.ieo.es:10508/6951 2023-06-11T04:14:41+02:00 Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) Casas-Sánchez, J.M. (José Miguel) Piñeiro-Álvarez, C.G. (Carmen Gloria) Atlantic Ocean North Atlantic Northeast Atlantic ICES 2000 http://hdl.handle.net/10508/6951 https://doi.org/10.1016/S0165-7836(00)00108-9 unknown Centro Oceanográfico de Vigo https://www.sciencedirect.com/science/article/pii/S0165783600001089 0165-7836 http://hdl.handle.net/10508/6951 Fisheries Research, 47. 2000: 19-25 doi:10.1016/S0165-7836(00)00108-9 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access research article 2000 ftieo https://doi.org/10.1016/S0165-7836(00)00108-9 2023-04-25T23:49:01Z In 1996 and 1997, a wide size range of greater fork-beard (Phycis blennoides Brünnich, 1768) was sampled from experimental and research surveys, trawlers and commercial landings from ICES Divisions VIIIc and IXa. Otoliths were collected and aged. Sectioned otoliths displayed numerous weakly marked rings that make ageing difficult. In the central part of the otolith, close to the nucleus, a strongly marked check ring is formed, apparently in association with a change in diet/environment from a pelagic to a demersal habit. The growth parameters by sexes separate and combined were estimated from age readings. The females grew faster; reaching 81 cm at 14 years, while the maximum age reached by males was 6 years from a specimen of 44 cm. The following length frequency distributions of the sampling catches showed a modal progression in the juvenile phase in agreement with the lengths estimated by the von Bertalanffy growth model for the ages group 1 and 2. 2 Article in Journal/Newspaper North Atlantic Northeast Atlantic Instituto Español de Oceanografía: e-IEO Fisheries Research 47 1 19 25 |
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Open Polar |
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Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
unknown |
description |
In 1996 and 1997, a wide size range of greater fork-beard (Phycis blennoides Brünnich, 1768) was sampled from experimental and research surveys, trawlers and commercial landings from ICES Divisions VIIIc and IXa. Otoliths were collected and aged. Sectioned otoliths displayed numerous weakly marked rings that make ageing difficult. In the central part of the otolith, close to the nucleus, a strongly marked check ring is formed, apparently in association with a change in diet/environment from a pelagic to a demersal habit. The growth parameters by sexes separate and combined were estimated from age readings. The females grew faster; reaching 81 cm at 14 years, while the maximum age reached by males was 6 years from a specimen of 44 cm. The following length frequency distributions of the sampling catches showed a modal progression in the juvenile phase in agreement with the lengths estimated by the von Bertalanffy growth model for the ages group 1 and 2. 2 |
format |
Article in Journal/Newspaper |
author |
Casas-Sánchez, J.M. (José Miguel) Piñeiro-Álvarez, C.G. (Carmen Gloria) |
spellingShingle |
Casas-Sánchez, J.M. (José Miguel) Piñeiro-Álvarez, C.G. (Carmen Gloria) Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
author_facet |
Casas-Sánchez, J.M. (José Miguel) Piñeiro-Álvarez, C.G. (Carmen Gloria) |
author_sort |
Casas-Sánchez, J.M. (José Miguel) |
title |
Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
title_short |
Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
title_full |
Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
title_fullStr |
Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
title_full_unstemmed |
Growth and age estimation of greater fork-beard (Phycis blennoides Brünnich, 1768) in the North and Northwest of the Iberian Peninsula (ICES Division VIIIc and IXa) |
title_sort |
growth and age estimation of greater fork-beard (phycis blennoides brünnich, 1768) in the north and northwest of the iberian peninsula (ices division viiic and ixa) |
publisher |
Centro Oceanográfico de Vigo |
publishDate |
2000 |
url |
http://hdl.handle.net/10508/6951 https://doi.org/10.1016/S0165-7836(00)00108-9 |
op_coverage |
Atlantic Ocean North Atlantic Northeast Atlantic ICES |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0165783600001089 0165-7836 http://hdl.handle.net/10508/6951 Fisheries Research, 47. 2000: 19-25 doi:10.1016/S0165-7836(00)00108-9 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access |
op_doi |
https://doi.org/10.1016/S0165-7836(00)00108-9 |
container_title |
Fisheries Research |
container_volume |
47 |
container_issue |
1 |
container_start_page |
19 |
op_container_end_page |
25 |
_version_ |
1768370890152607744 |