Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)

This paper describes the oogenesis of Chiton virgulatus, based on histological observations under transmission and scanning electron microscopy. Three oocyte types were identified: i) previtellogenic oocytes with a mean diameter of 50±20.5 µm, surrounded by elongated follicular cells of approximatel...

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Autores principales:	Vélez-Arellano,Nurenskaya, Shibayama,Mineko, Ortíz-Ordoñez,Esperanza, Silva-Olivares,Angélica, Arellano-Martínez,Marcial, García-Domínguez,Federico
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2014
Materias:	Egg hull Vitellogenesis Ultrastructure
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200038
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id	oai:scielo:S0717-95022014000200038
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spelling	oai:scielo:S0717-950220140002000382015-11-16Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)Vélez-Arellano,NurenskayaShibayama,MinekoOrtíz-Ordoñez,EsperanzaSilva-Olivares,AngélicaArellano-Martínez,MarcialGarcía-Domínguez,Federico Egg hull Vitellogenesis Ultrastructure This paper describes the oogenesis of Chiton virgulatus, based on histological observations under transmission and scanning electron microscopy. Three oocyte types were identified: i) previtellogenic oocytes with a mean diameter of 50±20.5 µm, surrounded by elongated follicular cells of approximately 5 µm, ii) immature vitellogenic oocytes with a mean diameter of 113±15.3 µm and small cytoplasmic projections denoting the onset of the oocyte hull development; adjacent to each projection are pores approximately 0.7 µm in diameter, and iii) mature vitellogenic oocytes with a mean diameter of 146±24.8 µm; the oocyte cytoplasmic projections grow and its apical zone becomes trident-shaped; follicular cells adopt a bulbous shape due to the growth of the elongation and can reach up to 20 µm in length. The morphology and ultrastructure of the projections of the mature vitellogenic oocyte, as well as the size of pores at their base, are specific to C. virgulatus; therefore, these features could be used in taxonomic or fertilization studies.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.32 n.2 20142014-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200038en10.4067/S0717-95022014000200038
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Egg hull Vitellogenesis Ultrastructure
spellingShingle	Egg hull Vitellogenesis Ultrastructure Vélez-Arellano,Nurenskaya Shibayama,Mineko Ortíz-Ordoñez,Esperanza Silva-Olivares,Angélica Arellano-Martínez,Marcial García-Domínguez,Federico Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
description	This paper describes the oogenesis of Chiton virgulatus, based on histological observations under transmission and scanning electron microscopy. Three oocyte types were identified: i) previtellogenic oocytes with a mean diameter of 50±20.5 µm, surrounded by elongated follicular cells of approximately 5 µm, ii) immature vitellogenic oocytes with a mean diameter of 113±15.3 µm and small cytoplasmic projections denoting the onset of the oocyte hull development; adjacent to each projection are pores approximately 0.7 µm in diameter, and iii) mature vitellogenic oocytes with a mean diameter of 146±24.8 µm; the oocyte cytoplasmic projections grow and its apical zone becomes trident-shaped; follicular cells adopt a bulbous shape due to the growth of the elongation and can reach up to 20 µm in length. The morphology and ultrastructure of the projections of the mature vitellogenic oocyte, as well as the size of pores at their base, are specific to C. virgulatus; therefore, these features could be used in taxonomic or fertilization studies.
author	Vélez-Arellano,Nurenskaya Shibayama,Mineko Ortíz-Ordoñez,Esperanza Silva-Olivares,Angélica Arellano-Martínez,Marcial García-Domínguez,Federico
author_facet	Vélez-Arellano,Nurenskaya Shibayama,Mineko Ortíz-Ordoñez,Esperanza Silva-Olivares,Angélica Arellano-Martínez,Marcial García-Domínguez,Federico
author_sort	Vélez-Arellano,Nurenskaya
title	Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
title_short	Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
title_full	Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
title_fullStr	Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
title_full_unstemmed	Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)
title_sort	histological description of oogenesis in chiton virgulatus (mollusca: polyplacophora)
publisher	Sociedad Chilena de Anatomía
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200038
work_keys_str_mv	AT velezarellanonurenskaya histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora AT shibayamamineko histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora AT ortizordonezesperanza histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora AT silvaolivaresangelica histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora AT arellanomartinezmarcial histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora AT garciadominguezfederico histologicaldescriptionofoogenesisinchitonvirgulatusmolluscapolyplacophora
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Histological Description of Oogenesis in Chiton virgulatus (Mollusca: Polyplacophora)

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