Wyneken Jeanette, Lolavar Alexandra
Department of Biological Sciences, Florida Atlantic University, Boca Raton, Florida.
J Exp Zool B Mol Dev Evol. 2015 May;324(3):295-314. doi: 10.1002/jez.b.22620.
It has been proposed that because marine turtles have environmentally determined sex by incubation temperature, elevated temperatures might skew sex ratios to unsustainable levels, leading to extinction. Elevated temperatures may also reduce availability of suitable nesting sites via sea level rise. Increased tropical storm activity can directly affect nest site moisture, embryonic development, and the probability that nests will survive. Here, we question some of these assumptions and review the limits of sex ratio estimates. Sea turtles may be more resilient to climate change than previously thought, in part because of hitherto unappreciated mechanisms for coping with variable incubation conditions.
有人提出，由于海龟的性别由孵化温度决定，气温升高可能会使性别比例失衡至不可持续的水平，从而导致灭绝。气温升高还可能因海平面上升而减少合适筑巢地点的数量。热带风暴活动增加会直接影响巢穴的湿度、胚胎发育以及巢穴存活的概率。在此，我们对其中一些假设提出质疑，并审视性别比例估计的局限性。海龟对气候变化的适应能力可能比之前认为的更强，部分原因是存在一些迄今未被认识到的应对孵化条件变化的机制。
