Glicoconjugados del ovario de Genypterus blacodes y su importancia en la biología reproductiva

COHEN, S.; FREIJO, R.; PETCOFF, G.; PORTIANSKY, C.; BARBEITO, G.; MACCHI, G.J.; DIAZ, A.

Revista de Ciencias Morfológicas

Universidad Nacional de La Plata

Lugar: La Plata; Año: 2016 vol. 18 p. 1 - 9

The pink cuskeel, Genypterus blacodes, is a widely distributed ophidiiform inhabiting waters from 22° 35' S (Rio de Janeiro, Brazil) to about 43° 00' S(Argentina). This species is one of the most valuable demersal fish resources in the Argentine Sea, mainly due its large size and flesh quality. The ovaries of G. blacodes present an elongated shape and are suspended by mesenteries from the dorsal body wall. When fish are in reproductive condition, the lamellae contain oocytes at different developmental stages: previtellogenic, primary growth and vitellogenic oocytes. A single layer flat epithelium lines the lamellae, and the epitelial cells present variations in size and morphology depending on the gonad maturity stage. In most teleost fishes this epithelium is involved in the formation of ovarian fluid. Particularly, the ovary of G. blacodes secretes large quantities of glycoconjugates, not only at the epithelium of the lamellae, but also in different oocyte structures. The aim of this research is to review literature of the ovary of G. blacodes in relation to the synthesis of glycoconjugates and their importance in the reproductive biology of this species