[Intraspecific intermale aggression in tame and aggressive Norway rats].
We studied intermale aggression in Norway rats selected for elimination (tame) and enhancement (aggressive) of aggressiveness towards a human. Tests resident-intruder and intermale aggression in an unknown cage were used. The attenuation of intraspecific aggressive behavior and the maintenance of all agonistic patterns were shown in tame rats. The latency of aggressive interaction was significantly higher and total time of "direct" aggression was significantly lower in tame then in aggressive males in both tests. Territorial aggression in tame rats was mainly characterized by a display of lateral threats which are considered as a demonstration of aggressive intention.
Pliusnina
I Z
IZ
Solov'eva
M Iu
MIu
D000374:Aggression / Q000502:physiology*; D000818:Animals; D004291:Dominance-Subordination; D008297:Male; D051381:Rats; D011914:Rats, Inbred BN; D017208:Rats, Wistar; D012726:Sexual Behavior, Animal / Q000502:physiology*; D013045:Species Specificity