Oogenesis in the amber-jack Seriola dumerili Risso, 1810 : an histological, histochemical and ultrastructural study of oocyte development
Grau, Amalia (SEAMASA)
Crespo, Sílvia (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Riera Munuera, Francesc (Estació d'Aqüicultura-Govern Balear)
Pou, Sebastià (Estació d'Aqüicultura-Govern Balear)
Sarasquete, Mª Carmen (Instituto de Ciencias Marinas de Andalucía)

Additional title:	Estudio histológico, histoquímico y ultraestructural del desarrollo ovocitraio en el pez limón Seriola dumerili Risso, 1810
Date:	1996
Abstract:	Macroscopic and microscopic characteristics of the maturity stages of the ovary of the amberjack Seriola dumerili. Risso are reported. Oogonia. Oocytes at different stages of development. Follicular and thecal cells, ant postovulatory follicles are described following a light and transmission electron microscope study. Histological observations of oocyte development show that the oocyte diameter increases about 100 fold during oogenesis, the nucleus-to- cytoplasm-ratio ranging from 72% (in oogonia) to 18% (in mature oocytes just before the breakdown of the germinal vesicle). Histochemical and ultrastructural studies show that three types of inclusions are formed during vitellogenesis. Lipid globules (exclusively composed of carbohydrates). Yolk granules, which contain glycoproteins, glycogen and lipids appear last. The location and movements of these inclusions within the oocyte cytoplasm during oogenesis are described. The vitelline envelope or zona radiata (ZR) is first seen at the lipid globule stage I as a discontinuous layer. The structure, mainly proteinaceous in nature. Increases in thickness as oogenesis proceeds and peaks (33 µm) during the maturation phase.
Note:	Altres ajuts: CICYT/MAR91-0638
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Ovary ; Histology ; Ultrastructure ; Reproduction ; Fishes ; Histología ; Histoquímica ; Ultraestructura ; Reproducción ; Ovario ; Peces
Published in:	Scientia marina, Vol. 60, No. 2-3 (1996) , p. 391-406, ISSN 0214-8358

Adreça alternativa: http://scimar.icm.csic.es/scimar/index.php/secId/6/IdArt/2797/

16 p, 22.4 MB

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