Elephants Better Beat the Heat--or Else

May 13 [Mon], 2013, 23:27

When summer hits, I dread jogging outside. But a study finds that elephants can be in true danger in the heat.

. Fully grown Asian elephants thus pack a lot of mass into a body with a relatively small surface area. And .

For the study, two female elephants in the Audubon Zoo in New Orleans walked around a half-mile track under various conditions. The outdoor temperature during these sessions ranged from a chilly 8 degrees Celsius to a scorching 35 degrees.

Clear, hot days were the worst. The already limited hide is now itself heated by the sun. With the equivalent of a busted radiator, the elephants retained 56 to 100 percent of their body heat internally. Which could make a mere four hours of exercise fatal. The research on elephant exertion is in the Journal of Experimental Biology. [M.F. Rowe et al., ]

Fortunately, elephants have ways to beat the heat: shift activity to after dark and, of course, go for a dip.

Sophie Bushwick

[The above text is a transcript of this podcast.]

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