Figure S5. log-log scatterplot to determine the allometric relationship between horn length and body size (pronotum width) in male O.babirussa from Singapore. Following recommendations by Knell (2009), I fitted (a) linear model (b) quadratic model (c) cubic model and (d) breakpoint model using the R package segmented (Muggeo, 2008) to the pooled data with all four populations to characterise the horn length-body size (n=292).
Table S2. Akaike information criterion (AIC) to compare the four models