| variation in stress and innate immunity in the tree lizard (urosaurus ornatus) across an urban-rural gradient. | the urban environment presents new and different challenges to wildlife, but also potential opportunities depending on the species. as urban encroachment onto native habitats continues, understanding the impact of this expansion on native species is vital to conservation. a key physiological indicator of environmental disturbance is the vertebrate stress response, involving increases in circulating glucocorticoids (i.e. corticosterone), which exert influence on numerous physiological parameters ... | 2008 | 18594834 |