The wrasse, Pseudolabrus sieboldi, is a diandric protogynous labrid fish. Spawning is
performed by a terminal phase (TP) male and an initial phase (IP) female between 6: 00 and …

The gilthead seabream is a protandrous hermaphrodite seasonal breeding teleost with a
bisexual gonad that offers an interesting model for studying the two first reproductive cycles …

Testicular and ovarian fragments of the protogynous Pacific wrasse Haliochoeres
trimaculatus were incubated in vitro with [3H] pregnenolone ([3H] P5),[3H] 17 …

The metabolism in vitro of pregnenolone-4-14 C by the gonads of Sparus auratus L., a
protandrous hermaphroditic teleost, was studied during sexual maturity in the male and …

Levels of plasma testosterone (T) and 11-ketotestosterone (11-KT) in males and plasma 17β-
estradiol (E 2), 17α-20β-dihydroxy-4-pregnen-3-one (17α, 20β-diOH-P), and T in females …

Tests made on the ovarian tissue at different stages of the reproductive cycle showed that
steroid metabolism in Zoarces viviparus follows the same pathways as in oviparous teleosts …

Steroid hormone biosynthesis by the gonads of the teleost Dicentrarchus labrax was studied
in vitro. The testicular tissue at maturity metabolized [4-14C] pregnenolone into the following …

Steroid hormone biosynthesis and catabolism in teleost fishes present numerous distinctive
features when compared with the biochemical systems operating in tetrapods. The fish …

Sex steroids are involved in all aspects of the regulation of reproductive processes in
vertebrates. Teleost fish produce several types of bioactive gonadal steroids, including …

The process of sex change in the protogynous wrasse, Thalassoma duperrey, was
investigated through histological and ultrastructural observations on the gonads of females …