The Ecology of Stress: linking life- history traits with physiological control mechanisms in free-living guanacos
- Ovejero Aguilar, Ramiro Jose Antonio
- Jahn, Graciela Alma
- Soto Gamboa, Mauricio
- Novaro, Andres Jose
- Carmanchahi, Pablo Daniel
DOIAbstract
Providing the context for the evolution of life-history traits, habitat features constrain successful ecological and physiological strategies. In vertebrates, a key response to life’s challenges is the activation of the Stress (HPA) and Gonadal (HPG) axes. Much of the interest in stress ecology is motivated by the desire to understand the physiological mechanisms in which the environment affects fitness. As reported in the literature, several intrinsic and extrinsic factors affect variability in hormone levels. In both social and non-social animals, the frequency and type of interaction with conspecifics, as well as the status in social species, can affect HPA axis activity, resulting in changes in the reproductive success of animals. We pr...
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