desenvolvimento do ovario

Biota Neotrop., vol. 9, no. 3

Desenvolvimento ovariano de Plagioscion squamosissimus (Heckel, 1840)
(Actinopterygii, Perciformes), no reservatório de Pedra, Rio de Contas, Bahia
Renata Triane da Silva Félix1,4, William Severi1, Athiê Jorge Guerra Santos1,
Ana Carla Asfora El-Deir2, Maria Goretti Soares3 & Joaquim Evêncio Neto3
1
Departamento de Pesca e Aqüicultura,
Universidade Federal Rural de Pernambuco – UFRPE
2
Departamento de Biologia,
Universidade Federal Rural de Pernambuco – UFRPE
3
Departamento de Morfologia e Fisiologia Animal,
Universidade Federal Rural de Pernambuco – UFRPE,
Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP 52171-900, Recife, PE, Brasil
4
Autor para correspondência: Renata Triane da Silva Félix, e-mail: [e-mail]

FÉLIX, R.T.S., SEVERI, W., SANTOS, A.J.G., EL-DEIR, A.C.A., SOARES, M.G. & EVÊNCIO NETO, J.
Ovarian development of Plagioscion squamosissimus (Heckel, 1840) (Actinopterygii, Perciformes), from the Pedra reservoir, Contas river, Bahia. Biota Neotrop. 9(3): http://www.biotaneotropica.org.br/v9n3/en/ abstract?article+bn01909032009. Abstract: This study aimed to characterize oocyte organization and maturation stages of Plagioscion squamosissimus ovary. Samples were collected bimonthly in Pedra reservoir, Contas River (BA), between November 2004 and
September 2006. Microscopic analyses were made on histological cuts stained with hematoxylin - eosin - phloxine and Gomori trichromic mixture. Five maturation stages were identified through macro and microscopic analysis.
Gonad coloration varied according to maturation stages. Six phases of oocyte development were identified: oogonia and perinucleolar, vitellogenic and early lipidic, vitellogenic and intermediate lipidic, vitellogenic and advanced lipidic, and pre-ovulation. Cell structures were similar to those found among marine species, such as oil droplets fusion at later developmental stages and pre-ovulatory hydration. Such features