The results of a recent study comparing primate brains…
Primate brains may have grown larger and more complex thanks to a fruit-filled diet, a new study suggests.
The researchers analyzed the brain sizes and diets of over 140 primate species spanning apes, monkeys, lemurs and lorises and found that those who munched on fruit instead of leaves had 25 percent more brain tissue, even when controlling for body size and species relatedness. Take spider monkeys and howler monkeys, for example. They both live in the rain forests of South America in groups of about 10. But where howler monkeys leisurely munch on trumpet tree leaves all day, spider monkeys venture out in small groups shortly after sunrise to forage for passion fruit and other ripe morsels. Despite their similar environments and social setting, spider monkeys have bigger brains than howlers.
Read on at The Salt.