关键词: 哺乳动物, 应激, 适应, 自然选择

Abstract: Stress response is an evolved suite of physiological,hormonal and behavioral responses exhibited by individuals that are highly conserved across vertebrate taxa. Most of what is known about stress comes from the biomedical and neuroendocrinological research community. Although Hans Selye’s original work addressed how individuals adapt to stressor,many recent studies have mainly focused on negative effects of stress on fitness of individuals and diseases related aspects of stress. However,it is very difficult to imagine that stress has evolved simply to make animals sick over millions of years.
From the point of view of evolution,we summarizes the relationships between stress responses and reproductive strategies,as well as different coping styles when animals were exposed to stressors. We also analyze the adaptive roles of stress responses and the coping styles in mammals.

Key words: Adaptation, Mammal, Nature selection, Stress