TY - JOUR
T1 - Aggressive behaviors in adult rats deprived of playfighting experience as juveniles
AU - Potegal, Michael
AU - Einon, Dorothy
PY - 1989/3
Y1 - 1989/3
N2 - Matched litter mates were reared in one of three conditions: in pairs or in isolation with or without one hour of daily playfighting experience from 20 to 50 days of age. The rats were then regrouped within condition so that they lived with identically reared cagemates for a month. This regrouping eliminated the transient effects of isolation such as increased fearfulness. When tested as adults, there was no effect of early rearing condition on the probability of intraspecific aggression or muricide, although isolation‐reared rats were less likely to retrieve the mice. However, isolation rearing reduced the latency to initiate shock‐induced defensive aggression and increased both its frequency and intensity. Isolated animals which had been given daily playfighting during development did not show the effects of early social deprivation. The mechanisms through which playfighting experience shapes later defensive behavior remain to be determined.
AB - Matched litter mates were reared in one of three conditions: in pairs or in isolation with or without one hour of daily playfighting experience from 20 to 50 days of age. The rats were then regrouped within condition so that they lived with identically reared cagemates for a month. This regrouping eliminated the transient effects of isolation such as increased fearfulness. When tested as adults, there was no effect of early rearing condition on the probability of intraspecific aggression or muricide, although isolation‐reared rats were less likely to retrieve the mice. However, isolation rearing reduced the latency to initiate shock‐induced defensive aggression and increased both its frequency and intensity. Isolated animals which had been given daily playfighting during development did not show the effects of early social deprivation. The mechanisms through which playfighting experience shapes later defensive behavior remain to be determined.
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U2 - 10.1002/dev.420220206
DO - 10.1002/dev.420220206
M3 - Article
C2 - 2925003
AN - SCOPUS:0024636414
SN - 0012-1630
VL - 22
SP - 159
EP - 172
JO - Developmental psychobiology
JF - Developmental psychobiology
IS - 2
ER -