Morfologia da micrópila e da superfície dos ovócitos de piracanjuba, Brycon orbignyanus (Osteichthyes, Characidae), sob microscopia eletrônica de varredura - DOI: 10.4025/actascibiolsci.v25i1.2097

Luciana Nakaghi Ganeco; Laura Satiko Okada Nakaghi

doi:10.4025/actascibiolsci.v25i1.2097

Morphology of the micropyle and oocyte surface of piracanjuba, Brycon orbignyanus (Osteichthyes Characidae), with scanning electron microscopy - DOI: 10.4025/actascibiolsci.v25i1.2097

Luciana Nakaghi Ganeco UNESP
Laura Satiko Okada Nakaghi UNESP

DOI: https://doi.org/10.4025/actascibiolsci.v25i1.2097

Abstract

This paper studied the morphology of oocytes of Brycon orbignyanus, (Osteichthyes, Characidae), through observation in Scanning Electron Microscopy (SEM). Fragments of the ovaries from adult females were collected. During the reproductive period, a hormonal induction in females was carried out to collect the oocytes after extrusion. The samples were fixed and processed for observation in SEM. Results showed that the oocytes of B. orbignyanus had a follicular epithelium formed by a single layer of cells with compressed shape, covering the whole radiatta zone that showed a smooth and regular surface with innumerable pores. The micropyle had a funnel-shaped, containing several furrows. The oocyte surface around the micropyle presented pores closer of each other than the other surface areas of radiatta zone

Downloads

Download data is not yet available.

Author Biography

Laura Satiko Okada Nakaghi, UNESP

Possui graduação em Medicina Veterinária pela FCAV/UNESP-Universidade Estadual Paulista Júlio de Mesquita Filho (1980), Mestrado em Zootecnia pela FCAV/UNESP Jaboticabal (1989) e Doutorado em Ciências (Biologia Celular e Tecidual) pela Faculdade de Medicina de Ribeirão Prêto da Universidade de São Paulo (1996). Atualmente é Professora Assistente Doutora MS3, na disciplina de Histologia para os cursos de Medicina Veterinária, Zootecnia e Ciências BIológicas da FCAV/UNESP- Jaboticabal. Tem experiência na área de Medicina Veterinária e Zootecnia , com ênfase em Histologia de gônadas em peixes , Reprodução induzida em peixes e Desenvolvimento embrionário em organismos aquáticos, atuando principalmente nos seguintes temas: morfometria, histologia, embriologia,microscopia eletrônica, peixes, rãs e animais domésticos Currículo Lattes

PDF (Português (Brasil))

Published

2008-04-18

How to Cite

Ganeco, L. N., & Nakaghi, L. S. O. (2008). Morphology of the micropyle and oocyte surface of piracanjuba, Brycon orbignyanus (Osteichthyes Characidae), with scanning electron microscopy - DOI: 10.4025/actascibiolsci.v25i1.2097. Acta Scientiarum. Biological Sciences, 25(1), 227-231. https://doi.org/10.4025/actascibiolsci.v25i1.2097

Download Citation

Issue

Vol 25 No 1 (2003)

Section

Biology Sciences

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

Read this link for further information on how to use CC BY 4.0 properly.