Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons

Two methods are currently available for age estimation in octopus beaks. They have been applied to the same specimen from a sample of 30 individuals of Octopus vulgaris caught in central-eastern Atlantic waters. These techniques aim at revealing growth increments in the rostrum sagittal sections (RS...

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Authors: Perales-Raya, Catalina, Bartolomé-Baraza, Aurora, Santamaría, María Teresa García, Pascual-Alayón, Pedro José, Almansa, Eduardo
Format: article
Publication Date:2010
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/324815
Online Access:http://hdl.handle.net/10261/324815
Access Level:Open access
Keyword:Centro Oceanográfico de Canarias
Pesquerías
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spelling Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisonsPerales-Raya, CatalinaBartolomé-Baraza, AuroraSantamaría, María Teresa GarcíaPascual-Alayón, Pedro JoséAlmansa, EduardoCentro Oceanográfico de CanariasPesqueríasTwo methods are currently available for age estimation in octopus beaks. They have been applied to the same specimen from a sample of 30 individuals of Octopus vulgaris caught in central-eastern Atlantic waters. These techniques aim at revealing growth increments in the rostrum sagittal sections (RSS) and lateral wall surfaces (LWS) of octopus upper and lower beaks. Both methods were improved to reduce the time of sample preparation and to enhance the appearance of the increments. For each individual, two independent readings were done for upper and lower beak sections, as well as for the lateral wall surfaces. Vertical reflected light (epifluorescence) and image analysis system were shown to be useful in the observation and analysis of the sequence of increments. Precision of the ageing, increment counts obtained by both techniques, and increment widths were discussed. Using upper beak RSS led to more precise age estimates, whereas preparing LWS was quicker and simpler, and revealed a higher number of increments. Therefore, our study recommends counting growth increments in LWS of beaks to age adultSí202320232010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/324815reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Canariasinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3248152026-05-22T06:33:51Z
dc.title.none.fl_str_mv Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
title Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
spellingShingle Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
Perales-Raya, Catalina
Centro Oceanográfico de Canarias
Pesquerías
title_short Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
title_full Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
title_fullStr Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
title_full_unstemmed Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
title_sort Age estimation obtained from analysis of cotopus (Octopus vulgaris Cuvier, 1797) beaks: improvements and comparisons
dc.creator.none.fl_str_mv Perales-Raya, Catalina
Bartolomé-Baraza, Aurora
Santamaría, María Teresa García
Pascual-Alayón, Pedro José
Almansa, Eduardo
author Perales-Raya, Catalina
author_facet Perales-Raya, Catalina
Bartolomé-Baraza, Aurora
Santamaría, María Teresa García
Pascual-Alayón, Pedro José
Almansa, Eduardo
author_role author
author2 Bartolomé-Baraza, Aurora
Santamaría, María Teresa García
Pascual-Alayón, Pedro José
Almansa, Eduardo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Canarias
Pesquerías
topic Centro Oceanográfico de Canarias
Pesquerías
description Two methods are currently available for age estimation in octopus beaks. They have been applied to the same specimen from a sample of 30 individuals of Octopus vulgaris caught in central-eastern Atlantic waters. These techniques aim at revealing growth increments in the rostrum sagittal sections (RSS) and lateral wall surfaces (LWS) of octopus upper and lower beaks. Both methods were improved to reduce the time of sample preparation and to enhance the appearance of the increments. For each individual, two independent readings were done for upper and lower beak sections, as well as for the lateral wall surfaces. Vertical reflected light (epifluorescence) and image analysis system were shown to be useful in the observation and analysis of the sequence of increments. Precision of the ageing, increment counts obtained by both techniques, and increment widths were discussed. Using upper beak RSS led to more precise age estimates, whereas preparing LWS was quicker and simpler, and revealed a higher number of increments. Therefore, our study recommends counting growth increments in LWS of beaks to age adult
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/10261/324815
url http://hdl.handle.net/10261/324815
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 15,81155

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