Make an evolutionary trade-off between intelligence and sexual prowess

liver411

Where the females are promiscuous, the males boasting the largest testicles also had the smallest brains. Conversely, where the females were faithful, the males had smaller testes and larger brains.

The study offers evidence that males make an evolutionary trade-off between intelligence and sexual prowess, said David Hoskens, a biologist at the Centre for Ecology and Conservation at the University of Exeter in England and a leading authority on bats' mating behavior.

http://news.yahoo.com/s/ap/20060124/ap_on_sc/bat_brains;_ylt=An3tLVJyCWIMk0cefIgtx74iANEA;_ylu=X3oDMTA3MzV0MTdmBHNlYwM3NTM-

liver411

this demonstrates females' leadership ability: where females lead, males will follow.

whoknows

interesting!

does intelligence prowess has to do with the size of the brain?

liver411

What do you think?

whoknows

maybe i found the answer from the link you provided.

"Large brains, meanwhile, are metabolically costly to develop and maintain. Pitnick's research suggested that in those bat species with promiscuous females, the male's body used more of its energy to enhance the testes — giving it the greater adaptive advantage — and lacked the energy it needed to further develop the brain."

less developed, smaller size?