Potegal M, Myers M M
Department of Developmental Psychobiology, New York State Psychiatric Institute, NY 10032.
Behav Neural Biol. 1989 Mar;51(2):247-61. doi: 10.1016/s0163-1047(89)90887-x.
We compared a group of spontaneously hypertensive rats (SHRs) to a group of Wistar-Kyoto (WKY) rats on each of the three most commonly studied forms of aggressive behavior in rats: muricide, intraspecific aggression, and shock-induced fighting (SIF). A significantly higher proportion of SHRs were muricidal; they also fought more at the lowest shock level. A trend for a higher incidence of intraspecific offense behaviors by SHRs was not significant. SHR flinch and jump thresholds were lower than the respective WKY thresholds. Although there were no significant correlations between shock thresholds and any aspects of SIF, the possibility that strain differences in shock sensitivity may contribute to differences in SIF cannot be ruled out. Within strains, there were no correlations among the different forms of aggression. Several different inherited characteristics may be associated with the accentuation of different forms of aggression in SHRs.
我们将一组自发性高血压大鼠（SHRs）与一组Wistar-Kyoto（WKY）大鼠在大鼠三种最常研究的攻击性行为形式上进行了比较：杀鼠行为、种内攻击行为和电击诱导战斗（SIF）。SHRs中杀鼠行为的比例显著更高；它们在最低电击水平时也打斗得更多。SHRs种内攻击行为发生率较高的趋势并不显著。SHRs的退缩和跳跃阈值低于相应的WKY阈值。尽管电击阈值与SIF的任何方面之间均无显著相关性，但不能排除电击敏感性的品系差异可能导致SIF差异的可能性。在品系内部，不同形式的攻击行为之间没有相关性。几种不同的遗传特征可能与SHRs中不同形式攻击行为的加剧有关。
