The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005
The main features of the Spanish albacore (Thunnus alalunga) surface fishery operating during summer and autumn months of 2005 in the northeast Atlantic and Bay of Biscay waters north of 40ºN parallel are presented in this document. The baitboat fleet increased its yield 30%; likewise the troll flee...
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International Commission for the Conservation of Atlantic Tunas
2007
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Online Access: | http://hdl.handle.net/10508/1671 http://hdl.handle.net/10261/328234 |
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ftcsic:oai:digital.csic.es:10261/328234 2024-02-11T10:06:50+01:00 The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 Ortiz-de-Zárate, Victoria Barreiro-Jueguen, Santiago Rodríguez-Cabello, Cristina Valeiras, Julio Atlantic Ocean North Atlantic Northeast Atlantic Central Atlantic Eastern Central Atlantic Bay of Biscay 2007 http://hdl.handle.net/10508/1671 http://hdl.handle.net/10261/328234 en eng International Commission for the Conservation of Atlantic Tunas Centro Oceanográfico de Vigo Ortiz de Zárate, V., S. Barreiro, C. Rodríguez-Cabello, J. Valeiras. 2007. The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005. Col. Vol. Sci. Pap. ICCAT, 60 (2): 421-427 http://hdl.handle.net/10508/1671 http://hdl.handle.net/10261/328234 open Thunnus alalunga Centro Oceanográfico de Vigo Pesquerías troll fishery baitboat fishery catch size composition age composition Northeast Atlantic documento de trabajo http://purl.org/coar/resource_type/c_8042 2007 ftcsic 2024-01-16T11:49:17Z The main features of the Spanish albacore (Thunnus alalunga) surface fishery operating during summer and autumn months of 2005 in the northeast Atlantic and Bay of Biscay waters north of 40ºN parallel are presented in this document. The baitboat fleet increased its yield 30%; likewise the troll fleet showed an increased catch of 36% respectively to the 2004 yield. Both fleets increased their nominal fishing effort about 16% in 2005. The size composition of the catches in 2005 obtained by both fleets showed a high proportion of age 2 derived by both methods used to age catches: length slicing and age-length keys, which is in agreement with the high proportion of age 1 present in 2004. However, in the case of age 3, the observed proportion of the catch at age differs contingent on either method applied to age the catch in the case of the troll fleet. Este documento presenta un resumen sobre la actividad pesquera de las flotas de superficie españolas: cebo vivo y cacea dirigidas a la pesca de atún blanco (Thunnus alalunga) que desarrollaron su actividad en los meses de verano y otoño de 2005 en aguas del Atlántico nordeste y golfo de Vizcaya al norte del paralelo 40 º N. La evolución de las capturas y esfuerzo realizado por los barcos de cebo vivo y cacea, mostró un aumento del 30% y 36% respectivamente frente a las capturas del año 2004. El esfuerzo nominal en días de pesca aumentó prácticamente un 16% en ambas flotas. En 2005, la composición de tallas de la captura, mostró un nivel elevado de capturas de edad 2 obtenido con los dos métodos empleados: corte de tallas determinista (“filo de cuchillo”) y claves talla edad, que corresponde a un nivel elevado de capturas de edad 1 observado en el año 2004 en ambas flotas. Sin embargo la proporción de capturas de edad 3 observada difiere dependiendo del método empleado en la obtención de la composición de edades de las capturas de la flota de cacea. Ce document présente un résumé sur les activités de pêche des flottilles de surface espagnoles (canne et ligne ... Report North Atlantic Northeast Atlantic Digital.CSIC (Spanish National Research Council) Blanco ENVELOPE(-55.233,-55.233,-61.250,-61.250) Elevado ENVELOPE(-63.267,-63.267,-64.683,-64.683) Flota ENVELOPE(-59.000,-59.000,-63.000,-63.000) Nordeste ENVELOPE(-66.867,-66.867,-68.167,-68.167) |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Thunnus alalunga Centro Oceanográfico de Vigo Pesquerías troll fishery baitboat fishery catch size composition age composition Northeast Atlantic |
spellingShingle |
Thunnus alalunga Centro Oceanográfico de Vigo Pesquerías troll fishery baitboat fishery catch size composition age composition Northeast Atlantic Ortiz-de-Zárate, Victoria Barreiro-Jueguen, Santiago Rodríguez-Cabello, Cristina Valeiras, Julio The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
topic_facet |
Thunnus alalunga Centro Oceanográfico de Vigo Pesquerías troll fishery baitboat fishery catch size composition age composition Northeast Atlantic |
description |
The main features of the Spanish albacore (Thunnus alalunga) surface fishery operating during summer and autumn months of 2005 in the northeast Atlantic and Bay of Biscay waters north of 40ºN parallel are presented in this document. The baitboat fleet increased its yield 30%; likewise the troll fleet showed an increased catch of 36% respectively to the 2004 yield. Both fleets increased their nominal fishing effort about 16% in 2005. The size composition of the catches in 2005 obtained by both fleets showed a high proportion of age 2 derived by both methods used to age catches: length slicing and age-length keys, which is in agreement with the high proportion of age 1 present in 2004. However, in the case of age 3, the observed proportion of the catch at age differs contingent on either method applied to age the catch in the case of the troll fleet. Este documento presenta un resumen sobre la actividad pesquera de las flotas de superficie españolas: cebo vivo y cacea dirigidas a la pesca de atún blanco (Thunnus alalunga) que desarrollaron su actividad en los meses de verano y otoño de 2005 en aguas del Atlántico nordeste y golfo de Vizcaya al norte del paralelo 40 º N. La evolución de las capturas y esfuerzo realizado por los barcos de cebo vivo y cacea, mostró un aumento del 30% y 36% respectivamente frente a las capturas del año 2004. El esfuerzo nominal en días de pesca aumentó prácticamente un 16% en ambas flotas. En 2005, la composición de tallas de la captura, mostró un nivel elevado de capturas de edad 2 obtenido con los dos métodos empleados: corte de tallas determinista (“filo de cuchillo”) y claves talla edad, que corresponde a un nivel elevado de capturas de edad 1 observado en el año 2004 en ambas flotas. Sin embargo la proporción de capturas de edad 3 observada difiere dependiendo del método empleado en la obtención de la composición de edades de las capturas de la flota de cacea. Ce document présente un résumé sur les activités de pêche des flottilles de surface espagnoles (canne et ligne ... |
format |
Report |
author |
Ortiz-de-Zárate, Victoria Barreiro-Jueguen, Santiago Rodríguez-Cabello, Cristina Valeiras, Julio |
author_facet |
Ortiz-de-Zárate, Victoria Barreiro-Jueguen, Santiago Rodríguez-Cabello, Cristina Valeiras, Julio |
author_sort |
Ortiz-de-Zárate, Victoria |
title |
The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
title_short |
The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
title_full |
The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
title_fullStr |
The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
title_full_unstemmed |
The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005 |
title_sort |
spanish albacore (thunnus alalunga) surface fishery in the northeastern atlantic in 2005 |
publisher |
International Commission for the Conservation of Atlantic Tunas |
publishDate |
2007 |
url |
http://hdl.handle.net/10508/1671 http://hdl.handle.net/10261/328234 |
op_coverage |
Atlantic Ocean North Atlantic Northeast Atlantic Central Atlantic Eastern Central Atlantic Bay of Biscay |
long_lat |
ENVELOPE(-55.233,-55.233,-61.250,-61.250) ENVELOPE(-63.267,-63.267,-64.683,-64.683) ENVELOPE(-59.000,-59.000,-63.000,-63.000) ENVELOPE(-66.867,-66.867,-68.167,-68.167) |
geographic |
Blanco Elevado Flota Nordeste |
geographic_facet |
Blanco Elevado Flota Nordeste |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
Centro Oceanográfico de Vigo Ortiz de Zárate, V., S. Barreiro, C. Rodríguez-Cabello, J. Valeiras. 2007. The Spanish albacore (Thunnus alalunga) surface fishery in the northeastern Atlantic in 2005. Col. Vol. Sci. Pap. ICCAT, 60 (2): 421-427 http://hdl.handle.net/10508/1671 http://hdl.handle.net/10261/328234 |
op_rights |
open |
_version_ |
1790604830219173888 |