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不久前,在《公共科学图书馆·综合》期刊上发布了一项新研究证实,我们的祖先之所以能繁衍出更多的后代,主要因为他们是“肉食动物”。“吃肉使哺乳的时间缩短了,因此每胎之间的间隔时间也变得更短。”来自瑞典兰德大学的主要研究者Elia Psouni表示,“这一定对人类进化产生过重要的影响。”平均来说,一个人类的宝宝的哺乳过程能持续两年四个月。与我们人类最长的寿命(大概120岁)相比,这并不算很长的时间。如果与我们最近的“亲属”黑猩猩相比,这就更短了。雌性黑猩猩给它们的幼仔哺乳的时间要4-5
Not long ago, a new study published in the journal Public Library of Integrated Sciences confirmed that our ancestors have been able to reproduce more offspring, mainly because they are “carnivores.” “Eating meat reduced the time to breastfeed, so the intervals between births became shorter.” Elia Psouni, principal investigator from the University of Rände, Sweden, said: “This must have been important to human evolution . ”“ On average, a human baby’s breastfeeding process lasts for two years and four months. This is not a long time compared to the longest life expectancy of our humankind (about 120 years old). This is even shorter than our closest ”kin" chimpanzee. Female chimpanzees give young cubs 4 to 5 times to breastfeed