Factors affecting incidence of infanticide and discrimination of related and unrelated neonates in male Mus musculus

摘要: Infanticide by males was examined in two strains (C57B1 and DBA) of the house mouse (Mus musculus). Males that had contact with a female within previous 2–3 weeks rarely committed infanticide when introduced to home cage her 1-day-old neonates, even neonates were different strain from colony. In contrast, 90% C57B1 no for more than 7 killed pups placed female's cage, 60% pup male's cage. No difference levels occurred grouped compared isolated males. These results indicate is not dependent upon recognition or female, but depends on exposure females. Infanticidal behavior directly determined genetic relationship, factors inhibit this reduce probability male will kill his own offspring.