World Turtle News, 08/02/2019

Turtle embryos play a role in determining their own sex

By moving around the egg to find what Richard Shine, a professor at Macquarie University of Australia and one of the co-authors, calls the “Goldilocks Zone”—where the temperature is not too hot and not too cold—the turtles can shield against extreme thermal conditions imposed by changing temperatures and produce a relatively balanced sex ratio. “This could explain how reptile species with temperature-dependent sex determination have managed to survive previous periods in Earth history when temperatures were far hotter than at present,” he says.

ALSO:

Missing sulcata tortoise in Panola County, TX

Missing sulcata tortoise in Gasconade County, MO

Missing tortoise (incorrect info in article- not sulcata) in Ottershaw, UK

Details in Miscellany section

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Photo from Ye et al./Current Biology.

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WTN Editor

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