Biologia reprodutiva do pargo (Lutjanus purpureus, Poey, 1866) na costa norte do Brasil.

Abstract

Given the lack of biological information on the snapper - Lutjanus purpureus - that can support practical management strategies along the Amazon continental shelf, this study aimed to identify periods of cell formations indicative of spawning and, to this end, gonads from specimens captured by commercial fishing between 2016 and 2017 were used and the reproductive cells were identified and counted using histological techniques. The periods of higher frequency of post ovulatory follicles (POF) were translated as of intense spawning and had the peak observed in the month of April, judging by the collection limitations in the spawning period of the species. Besides POF, hydrated oocytes and had a peak occurrence in July, suggesting reproductive continuity or a second peak in this period because atresic follicles and atresia tissues were also identified in this same period. Given the characteristics of the fishery, which preferentially acts on very young individuals, it is suggested that the closed season be extended to July of each year, to ensure an effective increase in reproduction of the spawning stock.