A great deal of information is known regarding the process of sex differentiation in fish, and
the mechanisms involved in primary sex determination are now beginning to be defined. A …

Most research on the control of oocyte maturation by luteinizing hormone (LH) in teleosts
and amphibians has focused on the production and action of maturation-inducing hormone …

The gonadotropic regulation of spermatogenesis and spermiogenesis is apparently
mediated by 11-ketotestosterone (11-KT) secreted by Leydig cells. However, the acquisition …

This review summarizes the major neuroendocrine mechanisms regulating ovulation, thus
providing a basis for understanding the various environmental and hormonal techniques for …

Spawning experiments under routine hatchery conditions on Israeli farms showed that
successful ovulation in the common carp (Dor 70× Yugoslavian lines) can be achieved by a …

A dot-blot immunoassay for the detection of vitellogenin (Vtg) in plasma of adult grey mullet
(Mugil cephalus) was developed. The assay identified the sex of the tested fish prior to …

We recently produced Oreochromis niloticus recombinant LH and FSH as single-chain
polypeptides in the methylotrophic yeast Pichia pastoris. Glycoprotein subunit α was joined …

This study describes the identification of 17α, 20β, 21-trihydroxy-4-pregnen-3-one (20β-
dihydro-11-deoxycortisol, 20β-S) as a major steroid product of the ovary of Atlantic croaker …

Although molecular mechanisms underlying steroid effects on GnRH and dopamine
receptors are well documented in mammals, little is known in fish. Herein, we describe the …

In the reproduction process of male and female fish, pituitary derived gonadotropins (GTHs)
play a key role. To be able to specifically investigate certain functions of Luteinizing (LH) and …