Mice reared with rats: Relations between mothers' activity level and offspring's behavior.

1 January 1967

journal article
Published by American Psychological Association (APA) in Journal of Comparative and Physiological Psychology

Vol. 63 (2) , 304-308
https://doi.org/10.1037/h0024366

Abstract

AFTER ACTIVITY LEVEL HAD BEEN DETERMINED IN AN OPEN-FIELD TEST, PURDUE-WISTAR FEMALE RATS AND C57BL/10 JAX FEMALE MICE WERE BRED. 4-DAY-OLD MALE PUPS WERE SUBSTITUTED FOR LIKE-AGE OFFSPRING OF SELECTED MOTHERS. DURING 4 DAYS IN THE OPEN FIELD AT WEANING TIME, MOTHERS FOSTERING RATS BECAME LESS ACTIVE DAY BY DAY WHILE THE DAILY ACTIVITY SCORES INCREASED FOR MOTHERS FOSTERING MICE. MICE REARED BY RAT MOTHERS WEIGHED MORE AND DID NOT FIGHT AMONG THEMSELVES. 39% OF THE MOUSE-REARED MICE FOUGHT AMONG THEMSELVES; WHEN PAIRED WITH SS FROM DIFFERENT EXPERIMENTAL GROUPS, 44% FOUGHT, FIGHTS BEING STARTED BY MOUSE-REARED MICE. FIGHTS WERE MORE LIKELY IF S HAD A HIGH-ACTIVITY, MOUSE FOSTER MOTHER. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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