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 …

Hormonal induction of sex reversal is possible in 47 species (15 families) of gonochores (34
species, nine families) and hermaphrodites using one of the 31 (16 androgens, 15 …

In fish, pre-embryonic events such as insemination, second polar body extrusion and first
mitotic cleavage are manipulable and render 37 different types of ploidy induction possible …

This paper reports the effects of environmental conditions during the period of sex
differentiation on the sex ratio of the Nile tilapia (Oreochromis niloticus). Different sex …

Under culture conditions, sex ratios in the European sea bass (Dicentrarchus labrax L.) are
consistently skewed in favor of males. Moreover, no heteromorphic sex chromosomes have …

ABSTRACT A neuroendocrine peptide can induce sex-reversal in pro-togynous labrid
teleosts, similar to androgenic and antiestrogenic steroids. Culture water containing …

Tilapia production from aquaculture worldwide has grown rapidly, increasing from 241,681
metric tons (MT) in 1986 to 472,969 MT in 1992 (FAO, 1994). This growth has been …

Indications of effects on fish endocrine system have been noted when exposed to effluents
of sewage treatment plants and subsequently in the receiving surface waters. For screening …

The present study aims at developing a production of monosex population of all male Nile
tilapia (Oreochromis niloticus) using 17α-methyltestosterone (17α-MT). Three treatments …

Sex reversal of early life stage tilapia (approximately 7–12 d post‐hatch, total length
averaging 9–11 mm, and total weight averaging 10–15 mg) is used commonly to produce …