Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain

The biology, growth and reproduction of the axillary seabream, Pagellus acarne, was studied based on data obtained from the catches of the Andalusia commercial fleet operating off the coasts of southern Spain from October 2003 to September 2004. The axillary seabream had a very wide depth distributi...

Descripción completa

Detalles Bibliográficos
Autores: Velasco, Eva María, Jiménez-Tenorio, N., Árbol-Pérez, Juan Pablo del, Bruzón-Gallego, María Ángeles, Baro, Jorge, Sobrino, Ignacio
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/325602
Acceso en línea:http://hdl.handle.net/10261/325602
Access Level:acceso abierto
Palabra clave:Pesquerías
Centro Oceanográfico de Gijón
id ES_72d0e16f7c7f10bee22075074dfd2e88
oai_identifier_str oai:digital.csic.es:10261/325602
network_acronym_str ES
network_name_str España
repository_id_str
spelling Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern SpainVelasco, Eva MaríaJiménez-Tenorio, N.Árbol-Pérez, Juan Pablo delBruzón-Gallego, María ÁngelesBaro, JorgeSobrino, IgnacioPesqueríasCentro Oceanográfico de GijónThe biology, growth and reproduction of the axillary seabream, Pagellus acarne, was studied based on data obtained from the catches of the Andalusia commercial fleet operating off the coasts of southern Spain from October 2003 to September 2004. The axillary seabream had a very wide depth distribution, appearing from the surface down to 500 m depth. The length–weight relationship was given by TW = 0.0048 TL3.3207 (R2 = 0.98) (TW = total weight; TL = total length) for all fish from the Gulf of Cadiz and TW = 0.0093 TL3.1132 (R2 = 0.94) for all fish from the Alboran Sea. The proportion of females to males increases as length increases in both populations and the species is characterized by protandric hermaphroditism. Spawning males were present almost throughout the year although higher percentages were observed in spring and early summer. In females, the spawning period occurred mainly in spring. In both areas, the mean size at first maturity for males was smaller than for females. The mean lengths at first maturity were 18.04 cm for males and 21.7 cm for females from the Gulf of Cadiz, and 17.7 cm and 20.1 cm for males and females from the Alboran Sea, respectively. The average total fecundity was estimated at 290,070 and 173,509 oocytes for Atlantic and Mediterranean individuals, respectively. The parameters of the von Bertalanffy growth model were estimated by age readings of the 247 sagitta collected. Two rings, one opaque and one hyaline, were laid down each year on the otoliths. The opaque zone was formed during spring and summer and the hyaline one during the remaining months of the year. The relationship between otolith radius and total length of the fish was described by the equation: TL = 27.7 OR – 1.8 (r = 0.96) (where OR = otolith radius). The parameters of the fitted Von Bertalanffy growth equation were L∞ = 31.65 cm, k = 0.21 yr−1 in the Gulf of Cadiz and L∞ = 32.14 cm, k = 0.17 yr−1 in the Alboran Sea.Sí202320232010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/325602reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Gijóninfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3256022026-05-22T06:33:51Z
dc.title.none.fl_str_mv Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
title Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
spellingShingle Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
Velasco, Eva María
Pesquerías
Centro Oceanográfico de Gijón
title_short Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
title_full Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
title_fullStr Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
title_full_unstemmed Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
title_sort Age, growth and reproduction of the axillary seabream, Pagellus acarne, in the Atlantic and Mediterranean waters off southern Spain
dc.creator.none.fl_str_mv Velasco, Eva María
Jiménez-Tenorio, N.
Árbol-Pérez, Juan Pablo del
Bruzón-Gallego, María Ángeles
Baro, Jorge
Sobrino, Ignacio
author Velasco, Eva María
author_facet Velasco, Eva María
Jiménez-Tenorio, N.
Árbol-Pérez, Juan Pablo del
Bruzón-Gallego, María Ángeles
Baro, Jorge
Sobrino, Ignacio
author_role author
author2 Jiménez-Tenorio, N.
Árbol-Pérez, Juan Pablo del
Bruzón-Gallego, María Ángeles
Baro, Jorge
Sobrino, Ignacio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Gijón
topic Pesquerías
Centro Oceanográfico de Gijón
description The biology, growth and reproduction of the axillary seabream, Pagellus acarne, was studied based on data obtained from the catches of the Andalusia commercial fleet operating off the coasts of southern Spain from October 2003 to September 2004. The axillary seabream had a very wide depth distribution, appearing from the surface down to 500 m depth. The length–weight relationship was given by TW = 0.0048 TL3.3207 (R2 = 0.98) (TW = total weight; TL = total length) for all fish from the Gulf of Cadiz and TW = 0.0093 TL3.1132 (R2 = 0.94) for all fish from the Alboran Sea. The proportion of females to males increases as length increases in both populations and the species is characterized by protandric hermaphroditism. Spawning males were present almost throughout the year although higher percentages were observed in spring and early summer. In females, the spawning period occurred mainly in spring. In both areas, the mean size at first maturity for males was smaller than for females. The mean lengths at first maturity were 18.04 cm for males and 21.7 cm for females from the Gulf of Cadiz, and 17.7 cm and 20.1 cm for males and females from the Alboran Sea, respectively. The average total fecundity was estimated at 290,070 and 173,509 oocytes for Atlantic and Mediterranean individuals, respectively. The parameters of the von Bertalanffy growth model were estimated by age readings of the 247 sagitta collected. Two rings, one opaque and one hyaline, were laid down each year on the otoliths. The opaque zone was formed during spring and summer and the hyaline one during the remaining months of the year. The relationship between otolith radius and total length of the fish was described by the equation: TL = 27.7 OR – 1.8 (r = 0.96) (where OR = otolith radius). The parameters of the fitted Von Bertalanffy growth equation were L∞ = 31.65 cm, k = 0.21 yr−1 in the Gulf of Cadiz and L∞ = 32.14 cm, k = 0.17 yr−1 in the Alboran Sea.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/10261/325602
url http://hdl.handle.net/10261/325602
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Gijón
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
_version_ 1869410763150458880
score 15,81155

Similares en LA Referencia