Abstract

VILLAMIL-RODRIGUEZ, Jonathan F.  and  RODRIGUEZ-PULIDO, José A.. Preliminary description on the oocyte development of the mapara Hypophthalmus marginatus (Siluriformes: Pimelodidae) in the Ariari river, municipality of Puerto Rico, Meta. Orinoquia [online]. 2019, vol.23, n.1, pp.25-30. ISSN 0121-3709.  https://doi.org/10.22579/20112629.538.

The mapara Hypophthalmus marginatus is a planktophagous catfish belonging to the family Pimelodidae and is native to the most important basins in South America. One of the essential requirements to maintain the fishing stock and expand the supply of cultivable species is the study of reproductive cycles in native fish, which contributes significantly to the biological knowledge of the species. The objective of the present study, intends to approach in a preliminary way the characterization of the oocyte development of H. marginatus. The histological characteristics of the gonads of 17 sexually mature females captured in the Ariari River (Puerto Rico, Meta) were analyzed, finding all cell types of the germinative lineage, allowing to establish that it is an asynchronous specie with partial spawning.

Keywords : oogenesis; planktophagous; reproduction.

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