Lucion A, Vogel W H
Department of Physiology, Institute of Biological Sciences, Federal University of Rico Grande do Sul, Brazil.
Integr Physiol Behav Sci. 1994 Oct-Dec;29(4):415-22. doi: 10.1007/BF02691361.
Water-deprived rats in a pair competing for a single source of water quickly establish a firm relationship during which one rat drinks consistently more (dominant) than the other (submissive) animal. This relationship is formed during the first competition and is very stable during subsequent tests. Exposure of dominant rats to a severe (18 hrs immobilization), but not a mild (2 hrs immobilization), stressor reduced markedly aggressive behavior and inverted transiently the dominant submissive relationship of the pairs. Exposure of submissive rats to the severe stressor resulted in only minor reductions of aggressive behavior in these animals. Prestress anxiety predicted stress effects in the dominant animals in that high-anxious animals lost more dominant behavior and weight during stress as compared with low-anxious rats. Thus, severe stress can transiently reduce dominant but not submissive behavior during water competition and high-anxious rats are more prone to lose their aggressive behavior.
在一对争夺单一水源的缺水大鼠中，它们会迅速建立起一种稳固的关系，在此期间，一只大鼠（占主导地位）始终比另一只（顺从）大鼠喝得多。这种关系在首次竞争时形成，并且在后续测试中非常稳定。将占主导地位的大鼠暴露于严重（18小时固定）而非轻度（2小时固定）应激源下，会显著降低攻击行为，并使配对中的主导-顺从关系暂时颠倒。将顺从的大鼠暴露于严重应激源下，只会使这些动物的攻击行为略有减少。应激前焦虑可预测占主导地位动物的应激效应，因为与低焦虑大鼠相比，高焦虑动物在应激期间失去了更多的主导行为和体重。因此，严重应激会在水竞争期间暂时降低占主导地位但非顺从的行为，并且高焦虑大鼠更容易失去攻击行为。
