Following, on reaching sexual maturity (seven to eight days), that they had its final make sure tasked a complete tameness rating
Belyaev questioned if the selecting to have tameness and you will against hostility perform result for the hormone and you can neurochemical transform, since the behavior eventually emerged from biology. Those hormone and you may agents alter you are going to next feel accused from inside the structure and you may structure. It could be that new the brand new anatomical variations in domesticated dogs have been regarding the fresh hereditary change root the behavioral demeanor getting which they chose (tameness and you can reduced hostility). He thought that he could read the this type of questions about domestication by the attempting to domesticate insane foxes. Belyaev along with his colleagues took wild silver foxes (a variant of the reddish fox) and you may bred them, which have a robust selection standards to possess inherent tameness.
So it shows you brand new foxes’ tameness, it cannot account fully for their altered fur coloration activities
Doing from the a month of age, and ongoing monthly during infancy, the latest foxes was in fact tested for their reactions to help you an experimenter. The latest experimenter do attempt to dogs and you will manage the brand new fox when you are giving it eating. Simultaneously, the brand new experimenters detailed perhaps the foxes prominent to hold out which have almost every other foxes, or that have people.
It ranked for every single fox’s habit of method an experimenter standing within the front of their household pen, including per fox’s tendency to chew the new experimenters whenever it tried to reach it.Leggi tutto »Following, on reaching sexual maturity (seven to eight days), that they had its final make sure tasked a complete tameness rating