Fig. 90 in A Systematic Review Of Sulawesi Bunomys (Muridae, Murinae) With The Description Of Two New Species

Fig. 90. Specimen scores representing samples of Bunomys karokophilus (empty triangles) from Sungai Sadaunta (823–1006 m), Tomado (1000 m), and Sungai Tokararu (1150 m), and samples of Bunomys chrysocomus (filled triangles) from Sungai Sadaunta (823–960 m), Tomado (1000 m), and Sungai Tokararu (1150 m) projected onto first and second principal components extracted from principal-components analysis. Ellipses outline 95% confidence limits for each cluster centroid in both ordinations. Upper graph: derived from a covariance matrix of log-transformed values for lengths of head and body, tail, hind foot, and ear (N 5 22 for B. karokophilus; N 5 71 for B. chrysocomus). Lower graph: based on a covariance matrix of log-transformed values for 16 cranial and 2 dental variables (N 5 17 for B. karokophilus; N 5 77 for B. chrysocomus). Equations for the regression lines are: B. karokophilus, Y 5 0.867× ‾2.254 (F 5 9.02, P 5 0.009); B. chrysocomus, Y 5 0.873× 0.500 (F 5 28.52, P 5 0.000). See table 69 for correlations (loadings) of variables with extracted components and for percent variance explained for both ordinations. The results illustrated here focus on samples of each species collected at Tomado, Sungai Tokararu, and within the same elevational range along the Sungai Sadaunta. The pattern of scores in the lower scatter plot, and degree of significance of the Y-intercepts of the regression lines and their slopes, is closely similar to the pattern derived from comparing the sample of B. karokophilus with all samples of B. chrysocomus from my transect (N 5 186) and all 10 population samples (N 5 232; table 2) of that species (neither is illustrated).