Fatores que influenciam na reprodução do Danio rerio em biotério

Abstract

Danio rerio has become an important animal model used in various types of research, thus the need arose to create and maintain healthy colonies in vivariums and has become fundamental to learn about the factors that influence the reproduction of these species. D. rerio is a gregarious fish that has sexual dimorphism, smell plays a number of roles in the mating process. Visual stimuli affect the choice of mates for mating. The reproduction of D. rerio is complex and can be influenced by a number of factors. Water salinity affects fertilization rates, survival and development of embryos and larvae. When the pH moves away from the neutral pH (pH = 7) it can cause changes in the mortality rate and hatching time as well as cause malformation. Photoperiod is crucial for successful spawning because it modulates the internal clock of this species. Another important factor is the temperature, which influences the proportion of females and males. Diet is also something that must be considered in the reproduction of D. rerio, since it is known that the composition of the feed given to the animals affects the reproductive performance of the animals. The knowledge we have about the reproduction of D. rerio is of great relevance, we must continue studying this topic so that we will be able to continue the process of improving the techniques and methods of rearing D. rerio in vivariums.