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Sunday, October 28, 2012

Dung beetles like to chill out - Nature Ramble...


Dung beetles eat feces. Everyone knows this. But here’s something you didn’t know: newly published research reveals that dung beetles can use spheres of rollable poop-meals as portable AC units — and they’re damn effective ones, at that.
The sands of the South African desert can exceed temperatures of 60 degrees Celsius, or 140 degrees Fahrenheit. That’s ridiculously hot. In fact, for a dung beetle like Scarabaeus lamarcki — which transports its meal by rolling it into a ball and pushing it across the scorching desert landscape with its hind legs — it’s too hot, as demonstrated in a study by functional zoologist Jochen Smolka in the latest issue of Current Biology. Using infrared thermography and behavioral experiments, Smolka and his colleagues have shown that dung beetles use their poo-ball as “a mobile thermal refuge” — a portable evaporative unit that cools the beetle slightly as it rolls, and dramatically when it clambers on top of it….Dung beatles like to chill out.

http://ecocrap.wordpress.com/2012/10/28/nature-ramble-22/








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