Science. 1984 Aug 17;225(4663):739-41. doi: 10.1126/science.225.4663.739.
Sex ratios of hatchling loggerhead turtles Caretta caretta taken from South Carolina and Georgia ranged from no females in nests laid in late May to 80 percent females in those laid in early July; the sex ratio decreased to 10 percent females in nests laid in early August. These seasonal changes are consistent with the role of temperature in directing sexual differentiation in various reptiles. The data have implications for understanding the demography of sea turtles and for their conservation.
南卡罗来纳州和佐治亚州孵化出的红海龟（Caretta caretta）幼龟的性别比例从 5 月下旬产卵的巢穴中没有雌性到 7 月初产卵的巢穴中 80%为雌性不等；8 月初产卵的巢穴中雌性比例降至 10%。这些季节性变化与温度在指导各种爬行动物的性别分化中的作用一致。这些数据对了解海龟的种群动态及其保护具有重要意义。
