ANP 325 Infanticide

ANP 325 Infanticide - Infanticide Thursday, March 10, 2011...

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Killing of infants of conspecific (own species) Uncommon in Lemurs, Lorises/Tarsiers What is Infanticide? Still dependent on mother and unweaned offspring Lactation requires energy and nutrition Infant must be carried Constrains mother's ability to reproduce What is an infant? Hannuman Langur Semnopithecus Entellus Adoption Avoidance Exploitation Resource Competition Elimination of Future Rivals Social Pathology By-product of male aggression Sexual Selection Potential explanations for infanticide Males kills unrelated infants to avoid misdirected care Expected: Species with male parental investment Observed: No infanticide observed (Callitrichids), in all infanticidal species extensive male care is absent Adoption Avoidance Infant is being used as a resource Prediction: Cannibalization of infant and should be observed in females of unrelated infants, expected in social species and more
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ANP 325 Infanticide - Infanticide Thursday, March 10, 2011...

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