SciELO - Scientific Electronic Library Online

vol.30 issue4Human's Stape Anthropometry: A Direct Anatomic StudyThe Genome in the Chordates: Introduction to Comparative Genomics author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


International Journal of Morphology

On-line version ISSN 0717-9502


FLORES QUINTANA, C et al. Follicular Atresia in Ovaries of Prochilodus lineatus. Int. J. Morphol. [online]. 2012, vol.30, n.4, pp.1301-1308. ISSN 0717-9502.

During the reproductive period, primary follicles are formed cyclically in the ovary of teleost, which mature and are released at the ovulation time. However, some of them develop a process of atresia with degeneration and resorption, which to be considered a physiological event should prevail at the end of the reproductive cycle. Morphological characteristics of ovaries of Prochilodus lineatus were analyzed for the presence of atresic follicles as indicators of possible changes in their reproductive biology affecting the repopulation of the species. In the ovaries of P. lineatus dominated the morphological changes that correspond to the so-called type I atresia, and atresic follicles were observed in fish with low gonadosomatic index who were at the end of the reproductive cycle. Detected follicular atresia could not be linked to a pathological process that causes a decline of the species in the Paraná river ecosystem.

Keywords : Fish; Gonad; Histology; Sabalo.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License