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

Authors

Luciana Nakaghi Ganeco UNESP Author
Laura Satiko Okada Nakaghi UNESP Author

DOI:

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

Keywords:

morfologia, ovócito, micrópila, teleósteo, Brycon orbignyanus

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

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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

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Published

2008-04-18

Issue

Vol. 25 No. 1 (2003)

Section

Biology Sciences

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How to Cite

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