Wish you were a Sheephead?
Posted: Mon Dec 16, 2013 3:57 pm
I'm not sure if this is the best place for this article, but the administrator can switch it or put it where he wants if he's so inclined. California sheephead can transition from a reproductive functional female to a functional male during the course of a lifespan in response to social factors. Protogynous sex change typically follows the size-advantage model, where gonadal transformation occurs once the reproductive potential of an individual would be greater as a male than as a female. The transitional phase takes between 2-3 weeks to several months, and it is hypothesized that steroid hormone concentrations are related to sex change due to the total degradation of the ovaries and the appearance of testes. The exact timing of the sexual morphogenesis is suppressed by aggressive interactions with dominant males and triggered by the removal of alpha males. There is a period of reproductive inactivity during gonadal remodeling, and the sex change in this species is unidirectional. It is possible that in later stages of the transition, fish are functionally male but maintain an intersexual gonadal appearance. All sheephead are born female. Most of them change to males following environmental clues we don’t fully understand. http://www.montereybayaquarium.org/anim ... p/cHd0/Q==
Kind of a cool looking fish and supposed to be good eating. Also kind of cool: Parrotfish start out as male or female but have sex organs of both sexes; they are protogynous hermaphrodites, meaning they can change from female to male. Some females will become supermales: larger males with brilliant, lively coloring.
Kind of a cool looking fish and supposed to be good eating. Also kind of cool: Parrotfish start out as male or female but have sex organs of both sexes; they are protogynous hermaphrodites, meaning they can change from female to male. Some females will become supermales: larger males with brilliant, lively coloring.