?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Maintenance+and+decline+of+the+suppression+of+infanticide+in+mother+rats&rft.creator=Peters%2C+L.+C.&rft.creator=Sist%2C+T.+C.&rft.creator=Kristal%2C+M.+B.&rft.subject=Behavioral+Neuroscience&rft.subject=Animal+Behavior&rft.subject=Behavioral+Biology&rft.subject=Comparative+Psychology&rft.subject=Physiological+Psychology&rft.subject=Psychobiology&rft.description=Virgin+female+rats+kill+foster+neonates%2C+whereas+newly+parturient+mothers+do+not.+We+demonstrated+previously+that+this+tendency+to+kill+is+suppressed+shortly+prepartum%2C+presumably+by+physiological+factors.+In+this+study%2C+we+show+that+a)+suppression+of+infanticide+is+maintained+through+the+first+two+weeks+of+lactation%3B+b)+the+mothers+that+do+not+kill+foster+neonates+are+not+necessarily+the+same+mothers+that+respond+maternally+toward+older+foster+pups%2C+and+those+that+kill+neonates+are+not+necessarily+the+same+ones+that+are+nonmaternal+to+older+pups%2C+the+two+behaviors+being+somewhat+independent%3B+and+c)+some+virgins+can+be+induced+to+be+noninfanticides+by+prolonged+exposure+to+young%2C+but+only+under+special+testing+conditions+not+required+by+actual+mothers%2C+which+are+nonkillers+of+foster+young.+This+suggests+that+the+maintenance+of+the+suppression+of+infanticide+in+mothers+owes+something+so+the+special+circumstances+of+lactation+other+than+continued+exposure+to+young.&rft.date=1991&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F759%2F1%2Finfant.htm&rft.identifier=++Peters%2C+L.+C.+and+Sist%2C+T.+C.+and+Kristal%2C+M.+B.++(1991)+Maintenance+and+decline+of+the+suppression+of+infanticide+in+mother+rats.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F759%2F