Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)

The structural and ultrastructural features of gonads from endemic Mexican fish have received scarce attention. This study describes the histological and ultrastructural characteristics of the oocyte in Chirostoma humboldtianum. The ovary is asynchronic, and as such, most phases of oocyte developmen...

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Detalles Bibliográficos
Autores: Rodolfo Cárdenas, Mónica Chávez, José Luis González, Patricia Aley, Jesús Espinosa, Luis Felipe Jiménez-García
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:México
Institución:Universidad Nacional Autónoma de México
Repositorio:Redalyc-UNAM
OAI Identifier:oai:redalyc.org:44918835019
Acceso en línea:https://www.redalyc.org/articulo.oa?id=44918835019
Access Level:acceso abierto
Palabra clave:Biología
ovary
oocyte
teleost
Chirostoma
ultrastructure
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oai_identifier_str oai:redalyc.org:44918835019
network_acronym_str MX
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repository_id_str
spelling Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)Rodolfo CárdenasMónica ChávezJosé Luis GonzálezPatricia AleyJesús EspinosaLuis Felipe Jiménez-GarcíaBiologíaovaryoocyteteleostChirostomaultrastructureThe structural and ultrastructural features of gonads from endemic Mexican fish have received scarce attention. This study describes the histological and ultrastructural characteristics of the oocyte in Chirostoma humboldtianum. The ovary is asynchronic, and as such, most phases of oocyte development are found in the same ovary. The complete process of oogenesis was divided in five stages: oogonium and folliculogenesis, primary growth, cortical alveoli and lipid inclusions, vitellogenesis and maturation. The presence of big filaments, which appear at the end of primary growth, induces some common follicular adaptation. During primary growth, abundant ribosomes, rough endoplasmic reticulum, and mitochondria are grouped in the cytoplasm. At the end of this stage, the Z1 layer of the chorion is developed, while microvilli start to be evident as well. In the cortical alveoli and lipid droplets phase, intense PAS positive vesicles, some of them containing nucleoid material, are observed in the peripheral cytoplasm and the lipid droplets take a more central position. In vitellogenesis, the proteic yolk accumulates in a centripetal way while the chorion is completely formed. In maturation, the germinal vesicle migrates to the animal pole, meiosis is restored, and there is nuclear breakdown. The oocyte increases its size and holds some oil droplets and a big fluid mass of yolk. On the outside, filaments surround the oocyte completely.Universidad de Costa Rica2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf0034-7744https://www.redalyc.org/articulo.oa?id=44918835019Revista de Biología Tropical (Costa Rica) Num.4 Vol.56reponame:Redalyc-UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenhttp://www.redalyc.org/revista.oa?id=449Revista de Biología Tropicalinfo:eu-repo/semantics/openAccessoai:redalyc.org:449188350192025-09-03T18:05:41Z
dc.title.none.fl_str_mv Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
title Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
spellingShingle Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
Rodolfo Cárdenas
Biología
ovary
oocyte
teleost
Chirostoma
ultrastructure
title_short Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
title_full Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
title_fullStr Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
title_full_unstemmed Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
title_sort Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)
dc.creator.none.fl_str_mv Rodolfo Cárdenas
Mónica Chávez
José Luis González
Patricia Aley
Jesús Espinosa
Luis Felipe Jiménez-García
author Rodolfo Cárdenas
author_facet Rodolfo Cárdenas
Mónica Chávez
José Luis González
Patricia Aley
Jesús Espinosa
Luis Felipe Jiménez-García
author_role author
author2 Mónica Chávez
José Luis González
Patricia Aley
Jesús Espinosa
Luis Felipe Jiménez-García
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Biología
ovary
oocyte
teleost
Chirostoma
ultrastructure
topic Biología
ovary
oocyte
teleost
Chirostoma
ultrastructure
description The structural and ultrastructural features of gonads from endemic Mexican fish have received scarce attention. This study describes the histological and ultrastructural characteristics of the oocyte in Chirostoma humboldtianum. The ovary is asynchronic, and as such, most phases of oocyte development are found in the same ovary. The complete process of oogenesis was divided in five stages: oogonium and folliculogenesis, primary growth, cortical alveoli and lipid inclusions, vitellogenesis and maturation. The presence of big filaments, which appear at the end of primary growth, induces some common follicular adaptation. During primary growth, abundant ribosomes, rough endoplasmic reticulum, and mitochondria are grouped in the cytoplasm. At the end of this stage, the Z1 layer of the chorion is developed, while microvilli start to be evident as well. In the cortical alveoli and lipid droplets phase, intense PAS positive vesicles, some of them containing nucleoid material, are observed in the peripheral cytoplasm and the lipid droplets take a more central position. In vitellogenesis, the proteic yolk accumulates in a centripetal way while the chorion is completely formed. In maturation, the germinal vesicle migrates to the animal pole, meiosis is restored, and there is nuclear breakdown. The oocyte increases its size and holds some oil droplets and a big fluid mass of yolk. On the outside, filaments surround the oocyte completely.
publishDate 2008
dc.date.none.fl_str_mv 2008
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0034-7744
https://www.redalyc.org/articulo.oa?id=44918835019
identifier_str_mv 0034-7744
url https://www.redalyc.org/articulo.oa?id=44918835019
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=449
dc.rights.none.fl_str_mv Revista de Biología Tropical
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Revista de Biología Tropical
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de Costa Rica
publisher.none.fl_str_mv Universidad de Costa Rica
dc.source.none.fl_str_mv Revista de Biología Tropical (Costa Rica) Num.4 Vol.56
reponame:Redalyc-UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Redalyc-UNAM
collection Redalyc-UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 14,965132

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