Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts

The diet of black anglerfish Lophius budegassa is described for the Cantabrian Sea (North Atlantic coast of Spain) from seasonal samples obtained onboard commercial vessels from January 1993 to December 1994. The stomach contents of fish caught on the continental shelf were examined, and differences...

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Detalles Bibliográficos
Autores: Preciado, Izaskun, Velasco, Francisco, Olaso-Toca, Luis Ignacio, Landa, Jorge
Tipo de recurso: artículo
Fecha de publicación:2006
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/326753
Acceso en línea:http://hdl.handle.net/10261/326753
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Santander
Pesquerías
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oai_identifier_str oai:digital.csic.es:10261/326753
network_acronym_str ES
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repository_id_str
spelling Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shiftsPreciado, IzaskunVelasco, FranciscoOlaso-Toca, Luis IgnacioLanda, JorgeCentro Oceanográfico de SantanderPesqueríasThe diet of black anglerfish Lophius budegassa is described for the Cantabrian Sea (North Atlantic coast of Spain) from seasonal samples obtained onboard commercial vessels from January 1993 to December 1994. The stomach contents of fish caught on the continental shelf were examined, and differences in the diet in relation to age-class, season and depth were studied. The age-classes were grouped according to a cluster analysis of diet composition. As a result, three groups were obtained: the first two corresponded to juveniles between 2 and 7 years old, and the third one corresponded to adults between 8 and 15 years old. Although Micromesistius poutassou was an important prey for all ages, the youngest black anglerfish fed mainly on small benthic fish. In contrast, large prey species such as Phycis blennoides and Merluccius merluccius were eaten almost exclusively by adults. The diet composition changed during the year. The changes in the diet of black anglerfish older than 3 years were more related to seasonal differences than to between-size differences. These seasonal shifts were mainly marked by the varying importance of Trachurus trachurus and M. merluccius in their diet. Feeding intensity also showed seasonal variations, with a significant decrease in autumn. An indirect effect of depth on the feeding ecology of black anglerfish was also found, since both age and diet composition changed with depth.Sí202320232006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/326753reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Santanderinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3267532026-05-22T06:33:51Z
dc.title.none.fl_str_mv Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
title Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
spellingShingle Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
Preciado, Izaskun
Centro Oceanográfico de Santander
Pesquerías
title_short Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
title_full Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
title_fullStr Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
title_full_unstemmed Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
title_sort Feeding ecology of black anglerfish Lophius budegassa: seasonal, bathymetric and ontogenetic shifts
dc.creator.none.fl_str_mv Preciado, Izaskun
Velasco, Francisco
Olaso-Toca, Luis Ignacio
Landa, Jorge
author Preciado, Izaskun
author_facet Preciado, Izaskun
Velasco, Francisco
Olaso-Toca, Luis Ignacio
Landa, Jorge
author_role author
author2 Velasco, Francisco
Olaso-Toca, Luis Ignacio
Landa, Jorge
author2_role author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Santander
Pesquerías
topic Centro Oceanográfico de Santander
Pesquerías
description The diet of black anglerfish Lophius budegassa is described for the Cantabrian Sea (North Atlantic coast of Spain) from seasonal samples obtained onboard commercial vessels from January 1993 to December 1994. The stomach contents of fish caught on the continental shelf were examined, and differences in the diet in relation to age-class, season and depth were studied. The age-classes were grouped according to a cluster analysis of diet composition. As a result, three groups were obtained: the first two corresponded to juveniles between 2 and 7 years old, and the third one corresponded to adults between 8 and 15 years old. Although Micromesistius poutassou was an important prey for all ages, the youngest black anglerfish fed mainly on small benthic fish. In contrast, large prey species such as Phycis blennoides and Merluccius merluccius were eaten almost exclusively by adults. The diet composition changed during the year. The changes in the diet of black anglerfish older than 3 years were more related to seasonal differences than to between-size differences. These seasonal shifts were mainly marked by the varying importance of Trachurus trachurus and M. merluccius in their diet. Feeding intensity also showed seasonal variations, with a significant decrease in autumn. An indirect effect of depth on the feeding ecology of black anglerfish was also found, since both age and diet composition changed with depth.
publishDate 2006
dc.date.none.fl_str_mv 2006
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/10261/326753
url http://hdl.handle.net/10261/326753
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Santander
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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