Sex reversal in wrasses. I. Uptake of testosterone by the gonads and the central nervous system and its aromatization in the CNS of Thalassoma duperrey (Teleostei: Labridae).

3H-Labelled testosterone, injected into the peritoneal cavity of T. duperrey is taken up by the central nervous system and the gonads. In the brain maximal uptake occurs within 1 to 2 h whereas maximal uptake in the gonads takes place within 1/2 to 1 h.