Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus

Autores
Ortiz, Nicolás
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Testes and ovaries of Enteroctopus megalocyathus collected along the Patagonian Atlantic coast were analysed histologically to validate the macroscopic maturity scales adopted for this species. Changes through the course of development of the seminiferous tubules and of the oocyte/follicular cell complexes were characterized and these were classified into five and six microscopic categories of development respectively. A histological maturity index, based on the frequencies of microscopic categories, was used to assess the correspondence between macroscopic maturation stages and the microscopic level of development of the gonadal tissue. Seminiferous tubules showed a regular and progressive pattern of microscopic development within each macroscopic stage and between consecutive macroscopic stages. However, a minority of males exhibiting seminiferous tubule with sperm did not display macroscopic characteristics of the mature-spawning stage. In females, an overlapping of microscopic categories was observed in maturing macroscopic stages. Previtellogenic oocytes were not present at mature-spawning or spent stages. Significant changes in the histological maturity index were observed between consecutive macroscopic stages, confirming the validity of macroscopic maturity scales of both sexes. In addition, by considering both macroscopic and microscopic criteria, it was possible to determine the overall state of development and functioning of the reproductive system during sexual maturation of this species.
Fil: Ortiz, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Materia
ENTEROCTOPUS MEGALOCYATHUS
GAMETOGENESIS
HISTOLOGY
MATURATION SCALES
PATAGONIAN ATLANTIC COAST
SPAWNING MODE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/3463
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/3463
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathusOrtiz, NicolásENTEROCTOPUS MEGALOCYATHUSGAMETOGENESISHISTOLOGYMATURATION SCALESPATAGONIAN ATLANTIC COASTSPAWNING MODEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Testes and ovaries of Enteroctopus megalocyathus collected along the Patagonian Atlantic coast were analysed histologically to validate the macroscopic maturity scales adopted for this species. Changes through the course of development of the seminiferous tubules and of the oocyte/follicular cell complexes were characterized and these were classified into five and six microscopic categories of development respectively. A histological maturity index, based on the frequencies of microscopic categories, was used to assess the correspondence between macroscopic maturation stages and the microscopic level of development of the gonadal tissue. Seminiferous tubules showed a regular and progressive pattern of microscopic development within each macroscopic stage and between consecutive macroscopic stages. However, a minority of males exhibiting seminiferous tubule with sperm did not display macroscopic characteristics of the mature-spawning stage. In females, an overlapping of microscopic categories was observed in maturing macroscopic stages. Previtellogenic oocytes were not present at mature-spawning or spent stages. Significant changes in the histological maturity index were observed between consecutive macroscopic stages, confirming the validity of macroscopic maturity scales of both sexes. In addition, by considering both macroscopic and microscopic criteria, it was possible to determine the overall state of development and functioning of the reproductive system during sexual maturation of this species.Fil: Ortiz, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaCambridge University Press2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3463Ortiz, Nicolás; Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 93; 3; 5-2013; 833-8420025-3154enginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315412000963info:eu-repo/semantics/altIdentifier/url/http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8882359&fulltextType=RA&fileId=S0025315412000963info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:05:04Zoai:ri.conicet.gov.ar:11336/3463instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:05:04.955CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
title Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
spellingShingle Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
Ortiz, Nicolás
ENTEROCTOPUS MEGALOCYATHUS
GAMETOGENESIS
HISTOLOGY
MATURATION SCALES
PATAGONIAN ATLANTIC COAST
SPAWNING MODE
title_short Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
title_full Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
title_fullStr Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
title_full_unstemmed Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
title_sort Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus
dc.creator.none.fl_str_mv Ortiz, Nicolás
author Ortiz, Nicolás
author_facet Ortiz, Nicolás
author_role author
dc.subject.none.fl_str_mv ENTEROCTOPUS MEGALOCYATHUS
GAMETOGENESIS
HISTOLOGY
MATURATION SCALES
PATAGONIAN ATLANTIC COAST
SPAWNING MODE
topic ENTEROCTOPUS MEGALOCYATHUS
GAMETOGENESIS
HISTOLOGY
MATURATION SCALES
PATAGONIAN ATLANTIC COAST
SPAWNING MODE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Testes and ovaries of Enteroctopus megalocyathus collected along the Patagonian Atlantic coast were analysed histologically to validate the macroscopic maturity scales adopted for this species. Changes through the course of development of the seminiferous tubules and of the oocyte/follicular cell complexes were characterized and these were classified into five and six microscopic categories of development respectively. A histological maturity index, based on the frequencies of microscopic categories, was used to assess the correspondence between macroscopic maturation stages and the microscopic level of development of the gonadal tissue. Seminiferous tubules showed a regular and progressive pattern of microscopic development within each macroscopic stage and between consecutive macroscopic stages. However, a minority of males exhibiting seminiferous tubule with sperm did not display macroscopic characteristics of the mature-spawning stage. In females, an overlapping of microscopic categories was observed in maturing macroscopic stages. Previtellogenic oocytes were not present at mature-spawning or spent stages. Significant changes in the histological maturity index were observed between consecutive macroscopic stages, confirming the validity of macroscopic maturity scales of both sexes. In addition, by considering both macroscopic and microscopic criteria, it was possible to determine the overall state of development and functioning of the reproductive system during sexual maturation of this species.
Fil: Ortiz, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
description Testes and ovaries of Enteroctopus megalocyathus collected along the Patagonian Atlantic coast were analysed histologically to validate the macroscopic maturity scales adopted for this species. Changes through the course of development of the seminiferous tubules and of the oocyte/follicular cell complexes were characterized and these were classified into five and six microscopic categories of development respectively. A histological maturity index, based on the frequencies of microscopic categories, was used to assess the correspondence between macroscopic maturation stages and the microscopic level of development of the gonadal tissue. Seminiferous tubules showed a regular and progressive pattern of microscopic development within each macroscopic stage and between consecutive macroscopic stages. However, a minority of males exhibiting seminiferous tubule with sperm did not display macroscopic characteristics of the mature-spawning stage. In females, an overlapping of microscopic categories was observed in maturing macroscopic stages. Previtellogenic oocytes were not present at mature-spawning or spent stages. Significant changes in the histological maturity index were observed between consecutive macroscopic stages, confirming the validity of macroscopic maturity scales of both sexes. In addition, by considering both macroscopic and microscopic criteria, it was possible to determine the overall state of development and functioning of the reproductive system during sexual maturation of this species.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/3463
Ortiz, Nicolás; Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 93; 3; 5-2013; 833-842
0025-3154
url http://hdl.handle.net/11336/3463
identifier_str_mv Ortiz, Nicolás; Validation of macroscopic maturity stages of the Patagonian red octopus Enteroctopus megalocyathus; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 93; 3; 5-2013; 833-842
0025-3154
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315412000963
info:eu-repo/semantics/altIdentifier/url/http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8882359&fulltextType=RA&fileId=S0025315412000963
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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