Abstract:
:Long-term field studies have revealed considerable behavioural differences among groups of wild Pan troglodytes. Here, we report three sets of cladistic analyses that were designed to shed light on issues relating to this interpopulation variation that are of particular relevance to palaeoanthropology. In the first set of analyses, we focused on the proximate cause of the variation. Some researchers have argued that it is cultural, while others have suggested that it is the result of genetic differences. Because the eastern and western subspecies of P. troglodytes are well differentiated genetically while groups within the subspecies are not, we reasoned that if the genetic hypothesis is correct, the phylogenetic signal should be stronger when data from the eastern and western subspecies are analysed together compared to when data from only the eastern subspecies are analysed. Using randomisation procedures, we found that the phylogenetic signal was substantially stronger with in a single subspecies rather than with two. The results of the first sets of analyses, therefore, were inconsistent with the predictions of the genetic hypothesis. The other two sets of analyses built on the results of the first and assumed that the intergroup behavioural variation is cultural in nature. Recent work has shown that, contrary to what anthropologists and archaeologists have long believed, vertical intergroup transmission is often more important than horizontal intergroup transmission in human cultural evolution. In the second set of analyses, we sought to determine how important vertical transmission has been in the evolution of chimpanzee cultural diversity. The first analysis we carried out indicated that the intergroup similarities and differences in behaviour are consistent with the divergence of the western and eastern subspecies, which is what would be expected if vertical intergroup transmission has been the dominant process. In the second analysis, we found that the chimpanzee cultural data are not only comparable to a series of modern human cultural data sets in terms of how tree-like they are, but are also comparable to a series of genetic, anatomical, and behavioural data sets that can be assumed to have been produced by a branching process. Again, this is what would be expected if vertical inter-group transmission has been the dominant process in chimpanzee cultural evolution. Human culture has long been considered to be adaptive, but recent studies have suggested that this needs to be demonstrated rather than assumed. With this in mind, in the third set of analyses we investigated whether chimpanzee culture is adaptive. We found the hypothesis that chimpanzee culture is adaptive was supported by an analysis of data from the Eastern African subspecies, but not by an analysis of data from the eastern and western subspecies. The results of our analyses have implications for the number of subspecies in Pan troglodytes, the relationship between hominin taxa and Palaeolithic industries, and the evolution of hominin cognition and behaviour.
journal_name
J Hum Evoljournal_title
Journal of human evolutionauthors
Lycett SJ,Collard M,McGrew WCdoi
10.1016/j.jhevol.2009.05.015subject
Has Abstractpub_date
2009-10-01 00:00:00pages
337-49issue
4eissn
0047-2484issn
1095-8606pii
S0047-2484(09)00127-4journal_volume
57pub_type
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
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pub_type: 评论,新闻
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2017.10.014
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2004.08.005
更新日期:2004-11-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2005.02.006
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
pub_type: 历史文章,杂志文章
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2015.04.004
更新日期:2015-12-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2006.04.001
更新日期:2006-09-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
pub_type: 杂志文章
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2013.05.001
更新日期:2013-08-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
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更新日期:2018-06-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2015.02.015
更新日期:2015-05-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2018.05.007
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2007.09.002
更新日期:2008-03-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2013.06.014
更新日期:2013-11-01 00:00:00
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journal_title:Journal of human evolution
pub_type: 杂志文章
doi:10.1016/j.jhevol.2019.04.006
更新日期:2019-07-01 00:00:00