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An autocorrelation analysis of genetic variation due to lineal fission in social groups of rhesus macaques
Author(s) -
Cheverud James M.,
Dow Malcolm M.
Publication year - 1985
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.1330670206
Subject(s) - fission , variation (astronomy) , autocorrelation , fission track dating , evolutionary biology , genetic variation , fission products , biology , statistics , physics , genetics , mathematics , nuclear physics , paleontology , astrophysics , gene , neutron , zircon
Empirical analyses and models of the lineal effects of fission indicate that considerable genetic differentiation may occur at the time of group formation, thus confusing the usual positive relationship between historical affiliation and genetic differentiation. We analyze the effects of fission pattern on variation in highly heritable morphological traits among eight social groups on Cayo Santiago. The analysis is performed using general network autocorrelation methods that quantitatively and directly measure the amount of variation in social group mean morphology that can be explained by fission. All of the fission autocorrelation coefficients are strongly negative, indicating that groups most recently formed by fission are most dissimilar. Also, most of the variation between groups can be explained by the fission pattern, indicating that lineal fission is the most important process generating between‐group variation on Cayo Santiago.