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Relationship between the chemical distance between pairs of Eulemur species and their (a,b) phylogenetic distance versus (c,d) their geographical distance. Shown are data derived for (a,c) genital secretions and (b,d) perianal secretions. Each dot is the value of a pairwise difference and thus these figures are only graphical approximations of the Mantel tests that we performed. Lines indicate the effect of statistically significant relationships.
