Abstract

Lutjanus synagris is a demersal fish present in the Colombian Caribbean of high value in the market by the quality of their meat. Its fishery generates 800 jobs, direct and indirect, becoming a kind of importance to fishermen in small scale. In order to provide technical and scientific information for fisheries management measures, histomorfologics of ovaries and testes development-related research, stepped forward to establish its macroscopic and histological evolution the gonadal development and maturation. From commercial landings in a collection Center, was collected a total of 63 specimens, of which 30 were males and 33 females. The macroscopic state and the weight of the gonads were recorded. Samples were fixed in formalin 10%, stained with hematoxylin-eosin and 4? histological cuts were made. The study showed that at a macroscopic level L. synagris presents 4 stages of gonadal development: I immature, maturation home II, III in maturation and mature IV. The histological study of the ovaries and testicles, identified 4 microscopic stages in females: oogonia, chromatid nucleolus, cortical alveoli, perinucleolares (in early and late phase) and vitellogenic oocytes. Spermatogonia, primary and secondary spermatocytes, spermatids and spermatozoa were identified in males. It was found to be the repre-sentation of females in stage IV in the months of August, October, March and April. In males was in the months of August, October, April and may. These observations indicate that L. synagris presents a gonadal development of asynchronous, since type observed different oocytes with all states of development.

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