Dan and Jen's Animal Friends

Monday, April 23, 2007

Once again, now it's personal!

Unless you are in serious denial or unfamiliar with the data that has been recorded, you know that the planet is experiencing a worldwide climate shift, and all of the science points towards human causes and responsibility. The last direct effect that climate change was when that poor little hedgie lost his spikes and almost died.
Now it's the poor little beardies that face the trauma.

Scientific American has an article on a study being done in Australia on Bearded Dragons. The results show that increased temperature while beardies are developing inside the egg results in changing of sex.
Between temperatures of 22 degrees C (72 degrees F) and 32 degrees C (90 degrees F), the eggs hatched an equivalent number of males and females. But once temperatures climbed above 34 degrees C (93 degrees F), the majority of hatchlings were female.
At high temperatures, only two males were born out of 35 eggs that hatched. Furthermore, 17 would-be males had been transformed by heat into females.
So what does this mean? Basically this study shows that prolonged exposure to above-average temperatures during prenatal development will affect a Bearded Dragon's sex if they are male. Application? If the Earth's climate continues to increase, beardies will lose sexual diversity in the wild and will face some serious endangerment issues.

Let's all stop for a minute and hope for Godzilla's sake that this doesn't happen. Godzilla's not actually in any danger. He lives in a controlled environment, he's already hatched, and he's not making baby lizards, but I'm sure that he'd be sad to find out that some of his wild siblings are affected by global warming.

Repost: This is a repost from Reeding and Writing.

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