Friday, December 09, 2005

Of Bats' Balls and Brains

Bats, like people, are caught in the eternal struggle between maximizing the capacity of their brains and maximizing that of their testicles:
For male bats, intelligence comes at a steep price. A new study found that bat species with large brains have smaller testicles.

. . . .

"The male who ejaculates the greatest number of sperm may win at this game, and hence many bats have evolved outrageously big testes," [biologist Scott] Pitnick said. "Because they live on an energetic knife-edge, bats may not be able to evolutionarily afford both big testes and big brains."
Link. You may or may not want to click here to get a look at what we're talking about. Don't say I didn't warn you. I'm sure as bat testicles not going to print that image on the front page.

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