MATERNAL STRESS INFLUENCES OFFSPRING IMMUNE FUNCTION IN A WILD LIZARD | |||
Tess McIntyre; San Jose State University; tess.mcintyre@sjsu.edu; David C. Ensminger | |||
Many wildlife species are experiencing novel stressors due to changing environments such as habitat loss, increased predation, and human interferences. An individual's physiological response to stressors can negatively impact their immune function and wound healing abilities. However, the transgenerational impact of a mother’s hormonal stress levels on her offspring is currently understudied. While prior research indicates that there is a negative correlation between individual lizards’ stress levels and their wound healing, recent research suggests transgenerational impacts of stress may prepare offspring for a stressful environment, therefore increasing wound healing rates. We hypothesize that western fence lizard (Sceloporus occidentalis) neonates born from mothers with elevated glucocorticoids (a key metabolic and stress related hormone) and control mothers will display differing rates of healing from superficial wounds. We collected gravid mothers, applied treatment, raised their hatchlings in the lab, administered a cutaneous wound to the hatchlings, and imaged their rate of wound healing over time. Preliminary results suggest that in the first four days post-wounding, hatchlings from glucocorticoid-treated mothers exhibited faster wound healing. Heightened stress in gravid mothers may prepare their offspring for more physiological challenges – leading to an increased chance of survival in a mutable habitat. | |||
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