Zerani M, Amabili F, Gobbetti A
Department of Molecular, Cellular, and Animal Biology, University of Camerino, Italy.
Horm Behav. 1992 Mar;26(1):56-61. doi: 10.1016/0018-506x(92)90031-p.
Plasma testosterone and 17 beta-estradiol were monitored during the main phases of male Triturus carnifex courtship. "Inactive" males showed higher levels of testosterone with respect to those found during the various courtship phases. Estradiol was low in "inactive" males, and it reached the highest values at the beginning of the courtship. In addition aromatase activity was higher in the brain of the newts at the beginning of the courtship. These findings seem to support the "aromatization hypothesis" in Triturus carnifex.
