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Morphological characterization of oogenesis in yellow peacock Cichla kelberi (Perciformes, Cichlidae)

Grant number: 12/00484-5
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): April 01, 2012
Effective date (End): December 31, 2013
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering
Principal Investigator:Rosicleire Veríssimo Silveira
Grantee:Pricila Viana de Oliveira
Home Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

Belonging to the Order Perciformes, Cichlidae family is considered the most numerous family of non-fish Ostariophysi, with an estimated 571 freshwater species occurring in Brazil, among them those of the genus Cichla, popularly known as peacock bass. The cichlids are endemic to the Amazon basin, Araguaia and Tocantins, but were introduced in the basins of the Northeast, São Francisco, Paraíba do Sul and Parana River Basin. In the São Paulo stretch of river Paraná, the tucunaré, Cichla sp, became one of the most important species in amateur fishing, there being several festivals, as well as a development tourist structure for tucunaré fishing. In professional fishing production, its annual average unloading between 1994 and 2000, was almost 20 tons, contributing with 4,5% of unloading, placing it among the ten most captured species. Thus, considering the importance of yellow peacock C. kelberi for the São Paulo region of the Paraná River, mainly in the reservoir and Jupiá and Ilha Solteira and to a better understanding of the reproductive process of the species, this study aims to define classes based on reproductive ovarian germ cell changes and perform the characterization morphological folliculogenesis and oogenesis of the species. (AU)