In vitro steroid metabolism during final oocyte maturation in the white croaker, Micropogonias furnieri (Sciaenidae)

JAVIER GARCÍA ALONSO; A NAPPA; A REY; DENISE VIZZIANO,; GUSTAVO M SOMOZA

FISH PHYSIOLOGY AND BIOCHEMISTRY

Kluwer

Año: 2003 vol. 28 p. 337 - 338

0920-1742

The main steroids produced by three stages ovarian fragments (post-vitellogenic PV, oocytes in GV migration phase Mtg and mature oocytes M) of white croaker were compared. In Mtg and M stages 17,20â-dihydroxy-4-pregnen-3-one (17,20âP), 17,21-dihydroxy-4-pregnene-3,20-dione (17,21P) and 17,20â,21-trihydroxy-4-pregnen-3-one (20â-S) were synthesised. The specific synthesis of 20âS in Mtg oocytes suggests a MIS role for this steroid.â-dihydroxy-4-pregnen-3-one (17,20âP), 17,21-dihydroxy-4-pregnene-3,20-dione (17,21P) and 17,20â,21-trihydroxy-4-pregnen-3-one (20â-S) were synthesised. The specific synthesis of 20âS in Mtg oocytes suggests a MIS role for this steroid.