Experimental test of the effects of fluctuating incubation temperatures on hatchling phenotype.

Abstract excerpt

In the painted turtle (Chrysemys picta) and red-eared slider turtle (Trachemys scripta), the temperature that eggs are exposed to during incubation determines the sex of the developing embryo. Constant temperature incubation experiments have shown that for each of these species there is a pivotal temperature that produces a 1:1 sex ratio; higher temperatures bias sex ratios toward females, and lower temperatures...

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