From a biological point of view, yes, according to a study published in the journal BMC Evolutionary Biology . Its authors, from the Center for Evolutionary Biology at the University of Western Australia, demonstrated through a series of experiments with domestic mice that the sperm of polygamous rodents competes better in the "race" for fertilization than that of monogamous rodents. .
Specifically, Renée Firman and her colleagues studied 12 generations of mice in which females mated twice, successively, with polygamous and monogamous males. The result was that 53% of the litters were mixed, 33% only from polygamous parents and 14% only from monogamous parents . The authors conclude that, at least in male mice, "the more pairs you have, the more fertile their offspring are."
