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A study of intragroup biological change induced by social group fission in Macaca mulatta using discrete cranial traits
Author(s) -
Cheverud James M.,
Buikstra Jane E.
Publication year - 1978
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330480108
Subject(s) - fission , trait , population , mating , biology , evolutionary biology , genetics , demography , physics , nuclear physics , computer science , sociology , neutron , programming language
Eight discrete cranial traits are used as biological indicators to investigate the effect of social group fission on intragroup genetic change leading to intergroup differentiation in Macaca mulatta . The timing of discrete cranial trait frequency change and group fission coincide, indicating a possible causal relationship between fission and genetic change. A significant change in the male mating population during and after fission is proposed as the mechanism causing intragroup genetic change, along with the effects of fluctuations in segregation ratios.