Now showing items 1-3 of 3
Novelty of the arena impairs the cortisol-related increase in the aggression of matrinxa (Brycon amazonicus)
(Physiology &behavior, 2015-03-15) [Artigo]
The dichotomic effect of a cortisol level rise in vertebrate behavior has been widely observed. Generally, a chronic increase of the hormone level inhibits aggression, while an acute rise increases aggression. However, in ...
Improvement of gamete quality and its short-term storage: an approach for biotechnology in laboratory fish
(Animal, 2015-03-01) [Artigo]
In fish, in vitro fertilization is an important reproductive tool used as first step for application of others biotechniques as chromosome and embryo manipulation. In this study, we aimed to optimize gamete quality and ...
Spermatozoon ultrastructure and semen parameters of Brycon vermelha (Characiformes, Characidae)
(Animal Reproduction Science, 2015-06-01) [Artigo]
This study analyzed semen parameters and the ultrastructure of spermatozoa of Brycon vermelha. The semen was white and viscous, with a mean volume of 5.0 +/- 2.6 mL/kg body weight and mean spermatozoon concentration of 4.3 ...