Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797

Octopus vulgaris Cuvier, 1797 is commercially the most important species in the central-eastern Atlantic cephalopod fishery. The estimation of growth parameters in wild octopus populations is essential to management of the fishery. As there are problems with methods based on length-frequency modal a...

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Authors: Raya, C.P., Hernández-González, Carlos Luis
Format: article
Publication Date:1998
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/325005
Online Access:http://hdl.handle.net/10261/325005
Access Level:Open access
Keyword:Pesquerías
Centro Oceanográfico de Canarias
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network_name_str España
repository_id_str
spelling Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797Raya, C.P.Hernández-González, Carlos LuisPesqueríasCentro Oceanográfico de CanariasOctopus vulgaris Cuvier, 1797 is commercially the most important species in the central-eastern Atlantic cephalopod fishery. The estimation of growth parameters in wild octopus populations is essential to management of the fishery. As there are problems with methods based on length-frequency modal analyses for describing growth from field data and there is a lack of age determination techniques for octopod species, estimation of the growth rates of natural populations is currently difficult. The present work describes the use of beaks to determine the age of O. vulgaris, using a new method based on a sample of beaks from 25 animals caught in the area in 1993. After sectioning different planes of the beaks embedded in resin blocks, they were analysed to select the best with which to observe growth increments. The sagittal plane (from outer to inner) revealed a pattern of increments of similar width in the internal rostral area of all the beaks analysed that are possibly related to the age of the animal. The number of these increments does not exclude daily deposition.Sí202320231998info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/325005reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Canariasinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3250052026-05-22T06:33:51Z
dc.title.none.fl_str_mv Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
title Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
spellingShingle Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
Raya, C.P.
Pesquerías
Centro Oceanográfico de Canarias
title_short Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
title_full Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
title_fullStr Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
title_full_unstemmed Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
title_sort Growth lines within the beak microstructure of the octopus Octopus vulgaris, Cuvier 1797
dc.creator.none.fl_str_mv Raya, C.P.
Hernández-González, Carlos Luis
author Raya, C.P.
author_facet Raya, C.P.
Hernández-González, Carlos Luis
author_role author
author2 Hernández-González, Carlos Luis
author2_role author
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Canarias
topic Pesquerías
Centro Oceanográfico de Canarias
description Octopus vulgaris Cuvier, 1797 is commercially the most important species in the central-eastern Atlantic cephalopod fishery. The estimation of growth parameters in wild octopus populations is essential to management of the fishery. As there are problems with methods based on length-frequency modal analyses for describing growth from field data and there is a lack of age determination techniques for octopod species, estimation of the growth rates of natural populations is currently difficult. The present work describes the use of beaks to determine the age of O. vulgaris, using a new method based on a sample of beaks from 25 animals caught in the area in 1993. After sectioning different planes of the beaks embedded in resin blocks, they were analysed to select the best with which to observe growth increments. The sagittal plane (from outer to inner) revealed a pattern of increments of similar width in the internal rostral area of all the beaks analysed that are possibly related to the age of the animal. The number of these increments does not exclude daily deposition.
publishDate 1998
dc.date.none.fl_str_mv 1998
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/10261/325005
url http://hdl.handle.net/10261/325005
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Canarias
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 15,812429

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