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Artículo

The Ecology of Stress: linking life- history traits with physiological control mechanisms in free-living guanacos

Ovejero Aguilar, Ramiro Jose AntonioIcon ; Jahn, Graciela AlmaIcon ; Soto Gamboa, Mauricio; Novaro, Andres JoseIcon ; Carmanchahi, Pablo DanielIcon
Fecha de publicación: 10/2016
Editorial: PeeJ Inc
Revista: PeerJ
ISSN: 2167-8359
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

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 predicted that a social environment can affect both guanaco axes by increasing the secretion of testosterone (T) and Glucocorticoid (GCs) in response to individual social interactions and the energetic demands of breeding. Assuming that prolonged elevated levels of GCs over time can be harmful to individuals, it is predicted that the HPA axis suppresses the HPG axis and causes T levels to decrease, as GCs increase.
Palabras clave: Stress Ecology , Reproduction , Lama Guanicoe , Sociality , Non-Invasive Methods , Hormonal Profiles in Wildlife
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/44970
DOI: http://dx.doi.org/10.7717/peerj.2640
URL: https://peerj.com/articles/2640/
URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5101617/
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Articulos de INST. ARG DE INVEST. DE LAS ZONAS ARIDAS
Citación
Ovejero Aguilar, Ramiro Jose Antonio; Jahn, Graciela Alma; Soto Gamboa, Mauricio; Novaro, Andres Jose; Carmanchahi, Pablo Daniel; The Ecology of Stress: linking life- history traits with physiological control mechanisms in free-living guanacos; PeeJ Inc; PeerJ; 4; e2640; 10-2016; 1-21
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