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.
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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USA: missing sulcata tortoise in Panola County, TX
USA: missing sulcata tortoise in Gasconade County, MO
UK: missing tortoise (incorrect info in article- not sulcata) in Ottershaw
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Photo from Ye et al./Current Biology.