研究表明:吃水果的动物的大脑要比主要以吃叶子为生的动物大25%左右。20世纪90年代中期开始盛行这样一种理论:在复杂的社会群体中,出于生存和繁殖的需要,更大的大脑才得以形成,该研究结果则质疑了这一理论。
Decasien said the challenges of living in a group could be part of getting smarter, but found no link between the complexity of primates' social lives and the size of their grey matter. What did correlate strongly with brain size was eating fruit. Foods such as fruit contain more energy than basic sources like leaves, thus creating the additional fuel needed to evolve a bigger brain.
Decasien说群体生活的挑战可能会使灵长动物更聪明,但却与它们社会生活的复杂性以及大脑灰质大小毫无关系。与大脑大小相关的是吃水果。水果等食物含有的能量多于树叶等基本食物,因此能额外促进大脑进化得更大。
At the same time, remembering which plants produce fruit, where they are, and how to break them open could also help a primate grow a bigger brain. A larger brain also needs more fuel to keep it running. "We've heard that fact saying is two percent of our body weight, but it takes up 25 percent of our energy," Decasien said.
同时,记住哪种植物长水果、位置在哪、如何打开这些水果也可能帮助灵长动物发育更大的大脑。更大的大脑也需要更多的燃料才能运转。"我们已听说过这样的事实:大脑的重量只有我们体重的2%,但其需要的能量却达25%,"Decasien说道。
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