A brain aromatase gene was identified from the Nile tilapia Oreochromis niloticus. The cDNA
sequence of this gene differed from that of the ovarian aromatase gene previously reported …

Steroids are known to play a crucial role in gonadal sex differentiation in many non-
mammalian vertebrates, but also in the gonadal sex change of hermaphroditic teleosts. We …

Sequential hermaphroditism is a common reproductive strategy in many teleosts. Steroid
production is known to mediate both the natural and induced sex change, yet beyond this …

Two aromatase genes have been discovered in the brain and ovary of some teleosts.
However, data on native aromatase enzyme kinetics and thus actual catalytic activity are …

Since its use as a model to study metazoan parasite culture and in vitro development, the
plerocercoid of the tapeworm, Ligula intestinalis, has served as a useful scientific tool to …

Abstract P450aromatase (CYP19) is an essential part of the enzyme complex catalyzing the
conversion of androgens into estrogens, which is a key reaction in the sex differentiation in …

Androgen and estrogen metabolism were examined in the period of steroid sensitivity during
sex differentiation in mono-sex populations of Oreochromis niloticus. Fry (XX, XY, and YY …

Pseudolabrus sieboldi, wrasse being a diurnal spawner provides a good opportunity to
study the endocrine mechanism of estrogen formation in brain and gonads. Moreover, an …

This report describes research initiated in response to concerns regarding the potential
endocrine disruption capabilities of herbicides used by the California Dept. of Transportation …

The research reported here was initiated at the request of the North Coast Regional Water
Quality Control Board in response to citizen inquiries about the potential endocrine …