When females face adverse environmental conditions, physiological changes, such as elevated corticosterone levels, to cope with the stressors may also impact their offspring. Such maternal effects are often considered adaptive and may "prime" the offspring for the same adverse environment, but maternal corticosterone levels do not always match that of the eggs produced. We examined how diet restriction and increased locomotor activity, via exercise training, affected steroid hormone levels of female green anole lizards, as well as the hormone levels in the yolk of their eggs. Diet restriction did not affect female hormone levels, but training increased corticosterone levels. Despite this, training did not affect yolk steroid levels, but eggs from females with diet restriction had lower corticosterone levels in yolk. This suggests that two common stressors, food shortage and increased locomotor activity, impact female physiology in a way that is not translated to her offspring.

中文翻译：

---

母体饮食限制可降低蜥蜴蛋黄中的皮质酮含量，但母体运动则不会改变。

当雌性面临不利的环境条件时，应对压力源的生理变化（例如皮质酮水平升高）也可能影响其后代。这种母体效应通常被认为是适应性的，并且可以在相同的不利环境下“激发”后代，但是母体皮质类固醇的水平并不总是与所产卵的水平相匹配。我们通过运动训练研究了饮食限制和运动能力的增加如何影响雌性绿green蜥蜴的类固醇激素水平以及卵黄中的激素水平。饮食限制不影响女性激素水平，但训练可增加皮质酮水平。尽管如此，训练并没有影响蛋黄类固醇水平，但是受饮食限制的雌性鸡蛋卵黄中的皮质酮水平较低。