Why isn't the world covered in poop? - Eleanor Slade and Paul Manning
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Because dung beetles feed on the dung of animals, they are often used as indicators of an ecosystem’s quality—like a “canary in the coal mine.” For example, if the mammal community living in a rainforest is intact, it will host a rich diversity of dung beetles in high abundance. If mammal communities become impoverished by poaching, or indirectly though habitat loss caused by logging, the associated dung beetle community will likewise become impoverished. By sampling the dung beetle community, scientists can indirectly learn about the quality of the overall habitat.
Dung beetles were revered by the ancient Egyptians, who saw the life cycle of the dung beetle as the cycle of life and the resurrection of the dead, and associated the rolling of their balls of dung with the sun rolling across the sky. It is also thought that the pupae of the dung beetle gave the ancient Egyptians the idea of mummification. Now, scientists have uncovered the secrets of how dung beetles navigate and why they dance on their dung balls. Humans, birds, and seals are known to use the stars to navigate. But by putting blindfolds on dung beetles in a planetarium, scientists have discovered that dung beetles also use the Milky Way to navigate. They dance on their dung balls to help orient themselves. By putting tiny boots on dung beetles and using thermal imaging cameras, scientists were able to show that desert dung beetles use the cooler surface of the dung ball as a thermal refuge to help regulate their temperature from the hot temperatures of the ground.
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