Why big brains? A comparison of models for both primate and carnivore brain size evolution.
Why big brains? A comparison of models for both primate and carnivore brain size evolution.
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DOI：
10.1371/journal.pone.0261185
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
O'Hara SJ
中科院分区：
文献类型：
--
作者：
Chambers HR;Heldstab SA;O'Hara SJ
尽管进行了几十年的研究，但对于导致大脑大小变化的选择压力，仍然存在很大的不确定性。尽管有影响力的社会性大脑假说一度得到广泛支持，但最近的研究未能找到支持大脑大小和社会性之间联系的证据。相反，现在似乎有大量证据表明，生态学可以更好地预测灵长类和食肉动物的大脑大小。在这里，测试了不同的大脑进化模型，并从整体脑化和特定大脑区域评估了社会、生态和生活史特征的相对重要性。在灵长类动物中，有证据表明大脑大小与生态因素，特别是饮食之间存在一致的关联；然而，也有证据表明，社交是驱动大脑大小的选择压力。在食肉动物中，有证据表明，生态变量，尤其是栖息地的大小，正在影响大脑的大小；然而，没有发现支持社会性大脑假说的证据，这可能反映了这样一个事实，即社会性似乎仅限于选定的几个分类群。生活史关联揭示了复杂的选择机制，通过延长发育期、降低生育力和延长最长寿命来平衡与昂贵脑组织相关的成本。未来的研究应该仔细考虑所选择的测量大脑大小的方法，尽可能调查整个大脑和特定的大脑区域，并寻求整合多个变量，从而充分捕捉影响大脑大小的所有潜在因素。
Despite decades of research, much uncertainty remains regarding the selection pressures responsible for brain size variation. Whilst the influential social brain hypothesis once garnered extensive support, more recent studies have failed to find support for a link between brain size and sociality. Instead, it appears there is now substantial evidence suggesting ecology better predicts brain size in both primates and carnivores. Here, different models of brain evolution were tested, and the relative importance of social, ecological, and life-history traits were assessed on both overall encephalisation and specific brain regions. In primates, evidence is found for consistent associations between brain size and ecological factors, particularly diet; however, evidence was also found advocating sociality as a selection pressure driving brain size. In carnivores, evidence suggests ecological variables, most notably home range size, are influencing brain size; whereas, no support is found for the social brain hypothesis, perhaps reflecting the fact sociality appears to be limited to a select few taxa. Life-history associations reveal complex selection mechanisms to be counterbalancing the costs associated with expensive brain tissue through extended developmental periods, reduced fertility, and extended maximum lifespan. Future studies should give careful consideration of the methods chosen for measuring brain size, investigate both whole brain and specific brain regions where possible, and look to integrate multiple variables, thus fully capturing all of the potential factors influencing brain size.
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DOI：
10.1098/rstb.2012.0112
发表时间：
2012-08-05
影响因子：
6.3
作者：
Barton, Robert A.
通讯作者：
Barton, Robert A.
影响因子：
9.2
作者：
Barton, Robert A.;Venditti, Chris
通讯作者：
Venditti, Chris
DOI：
10.1098/rstb.1995.0076
发表时间：
1995-06-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
BARTON, RA;PURVIS, A;HARVEY, PH
通讯作者：
HARVEY, PH
影响因子：
2.4
作者：
Barton, RA
通讯作者：
Barton, RA
影响因子：
1.7
作者：
Deaner, Robert O.;Isler, Karin;van Schaik, Carel
通讯作者：
van Schaik, Carel