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Year 2016 - Volume 36, Number 9
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Morphological description of Melanotaenia boesemani ovaries in reproductive activity, 36(9):893-90
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ABSTRACT.- Radael M.C., Fosse P.J., Silva R.M., Fosse Filho J.C., Andrade D.R. & Vidal Junior M.V. 2016. [Morphological description of Melanotaenia boesemani ovaries in reproductive activity.] Descrição morfológica dos ovários do peixe Melanotaenia boesemani em atividade reprodutiva. Pesquisa Veterinária Brasileira 36(9):893-900. Centro de Ciências e Tecnologias Agropecuárias, Laboratório de Bioensaios em Piscicultura Intensiva, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Sala 112, Avenida Alberto Lamego 2000, Parque Califórnia, Campos dos Goytacazes, RJ 28013-620, Brazil. E-mail: marcellaradael@yahoo.com.br
The germinal ovarian tissue of the fish Melanotaenia boesemani was studied. By means of morphological analyses of the gonads, performed after the manufacture of histological slides made of paraffin and stained with hematoxylin-eosin, the cell types found were described and the rank of the maturity stage of the fishes was executed. Macroscopically was found that the species has only one ovary, rounded and in the observed phase yellowish, located in the lateral front part of the coelomic cavity. The observed females were classified in the gonadal development scale as mature/in reproduction. The presence of empty follicles and spawning marks on ovigerous lamellae proved to be evident. In vitellogenic oocytes of this fish, the presence of filaments of oocyte adhesion anchored to the pellucida zona was found. The ovaries showed general morphological appearance similar to that of other teleost fishes. Its spawning type was classified as intermittent and the pattern of development of oocytes as asynchronous. |
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