Determination of the time of spawing and maturation of the jundiá, rhamdia sapo, based on the gonado-somatic index (GSI) and the morphocytologic study of the gonods
DOI:
https://doi.org/10.5902/2179460X24869Abstract
Seasonal changes of the oocyte and the determination of the time of spawning of Rhamdia sapo are studied in this paper by the use of the Gonado-somatic Index (IGS), the monthly weight proportion of oocytes coeficient (CPN) and the oocyte area in each os its stages of development (CPT) as parameters. The conclusions drawn was that Rhamdia sapo females have a long reproductive period (august to february), in which two phases of enhanced reproductive activity were detected (august-september and january-february).
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