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Post by Naught on Sept 13, 2010 16:26:40 GMT 10
Things evolve Along the warm coastal lowlands of New South Wales (map), the yellow-bellied three-toed skink lays eggs to reproduce. But individuals of the same species living in the state's higher, colder mountains are almost all giving birth to live young. Both birthing styles come with evolutionary tradeoffs: Eggs are more vulnerable to external threats, such as extreme weather and predators, but internal fetuses can be more taxing for the mother. news.nationalgeographic.com/news/2010/09/100901-science-animals-evolution-australia-lizard-skink-live-birth-eggs/Good way to survive cold I guess?
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Post by Wes on Sept 13, 2010 16:42:24 GMT 10
Interesting stuff Naught. Never heard of this. I thought all reptiles laid eggs.
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Post by concrete on Sept 13, 2010 20:55:30 GMT 10
Below is a list of some of the more common species of reptiles and the method of reproduction they employ. Egg LayersAll turtles All tortoises All crocodilians Some lizards Iguanas Water dragons Geckos Veiled chameleons Panther chameleons Monitors Snakes All pythons Kingsnakes Milksnakes Rat snakes Corn snakes LivebearersSome lizards Solomon Island skink Blue-tongue skink Shingle-backed skink Some chameleons Jackson's chameleon Some snakes All boas All vipers Garter snakes www.exoticpetvet.net/reptile/rerepro.htmlSeems skinks might be quite adept at choosing how to birth their sprogs. I'll worry once they start growing feathers.
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Post by Wes on Sept 13, 2010 21:19:46 GMT 10
Thanks Concrete, I just learnt something I didn't know, cheers.
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Post by brillbilly on Sept 14, 2010 0:29:40 GMT 10
evolution has many strange twists n turns,bloody fascinating
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Post by Raindrop on Oct 15, 2010 10:25:03 GMT 10
Very informative.............
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