Overall, female goldfish tend to be more energetic than the males, who are usually less active. However, this changes during the breeding season. It is a very strong indicator that you have a male goldfish on your hands when you see it chasing another fish during spawning season. Males will...
In the first series of experiments, male goldfish were shown to retain their ability to perform male-typical sex behavior within a week after being induced to perform female-typical behavior. Likewise, female goldfish were also shown to retain their female-typical sex behavior a week after being...
The effectiveness of testosterone (T) and 11-ketotestosterone (K) in inducing male-typical sex behaviors in goldfish was examined by implanting intact adult females with one empty (blank) Silastic implant (B females), one implant containing T or K, or one T and one K implant (T + K femal...
In this study, clonidine inhibited PG-induced spawning behavior of nonovulated female goldfish in a dose-dependent manner and also inhibited spawning of ovulated goldfish. In male goldfish, clonidine also inhibited PG-induced female spawning behavior but did not affect male spawning behavior. The ...
Hypothalamic control of thyroid gland activity and gonadal activity in the goldfish, Carassius auratus A stereotaxic method for placement of electrodes in the goldfish hypothalamus was described. Electrolytic lesions in the nucleus preopticus (NP), or bilate... RE Peter - 《General & Comparative Endo...
grouami. Maybe male honey gouramis use the brown line and lack of yellow to distinguish females from rival males. At least to me, she looks more like a male than the females he's evolved to recognize. He might be mistaking her for a male and her manish good looks are making him ...
Differential binding of endogenous steroids and chemicals to androgen receptors in rainbow trout and goldfish Androgen receptors (ARs) from fish were characterized in order to evaluate differences in the binding affinities of steroids and environmental chemicals be... K Wells,GVD Kraak - 《Environmental...
(Hannibal et al, 1995; Masuo et al, 1993; Piggins et al, 1996; Shioda et al, 1997), and central PACAP administration reduces food intake and weight gain in many species, including rats, mice, chicks, and goldfish (Chance et al, 1995; Dore et al, 2013; Matsuda et al, 2005a; ...
Linking hormone and pheromone production During the time when the offspring are still needy, not only egg production but also costly male mating attempts distracting both parents from caring for offspring should be avoided. Copulations, for example, might divert the attention from protecting the offsp...
The content of sex pheromone, Bombykol, in the silkworm female moths and its periodic change were compared among 3 strains having different pheromone response in the male moth. The pheromone content of the female moth showed the periodic change; the pheromone increased in photophase period and de...