Male house mice do not adjust sperm allocation in response to odours from related or unrelated rivals
Sperm competition theory predicts that males should adjust the number of sperm they ejaculate adaptively, according to sociosexual cues of sperm competition at the time of mating. Specifically, it is predicted that (1) males will respond to an increased risk of sperm competition from rivals by increasing sperm allocation, and (2) the increase in allocation […]
Deficits in male sexual behavior in adulthood after social instability stress in adolescence in rats
Abstract There is increasing evidence that exposure to stressors in adolescence has long-lasting effects on emotional and cognitive behavior, but little is known as to whether reproductive functions are affected. We investigated appetitive and consummatory aspects of sexual behavior in male rats that were exposed to chronic social instability stress (SS, n = 24) for […]