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Glucocorticoids, Energy Metabolites, And Immunity Vary Across Allostatic States For Plateau Side-Blotched Lizards (Uta Stansburiana Uniformis) Residing In A Heterogeneous Thermal Environment, Susannah S. French, Spencer B. Hudson

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Reptiles rely on thermal heat exchange to achieve body temperatures (Tbody) conducive to maintaining homeostasis. Diurnal changes in the thermal environment are therefore liable to influence allostatic mediation of survival processes (e.g., immunity) during environmental challenges or stressors. However, the extent to which Tbody prompts individual variation in physiology remains largely unexplored in reptiles. Our study tested how circulating energy-mobilizing hormone, energy metabolites, and immunity can vary across basal and stress-induced allostatic states for plateau side-blotched lizards (Uta stansburiana uniformis) residing in a heterogeneous thermal environment. We collected baseline and acute stress blood samples from male lizards to compare changes …