ajpa24443-sup-0001-FigureS1.pdfPDF document, 992.6 KB

FIGURE S1: Geographic distribution of extant gorilla taxa, with elevational zones. Country borders in white, major rivers in blue. Inset shows details of G.b. graueri (green) and G.b. beringei (blue) distributions. From Ruff et al., 2018; originally modified from Tocheri et al., 2016.

ajpa24443-sup-0002-FigureS2.pdfPDF document, 1,013.2 KB

FIGURE S2: Prediction of known log-transformed body mass from femoral distal articular mediolateral breadth in adults with fully fused long bone epiphyses. Red filled circles: G. gorilla gorilla; orange x: low elevation G. beringei graueri; blue squares: G. b. beringei. Least squares regression line through all points plotted. See Table 3 for regression statistics.

ajpa24443-sup-0003-FigureS3.pdfPDF document, 1.1 MB

FIGURE S3: Prediction of known log-transformed body mass from humeral distal articular mediolateral breadth in adults with fully fused long bone epiphyses. Red filled circles: G. gorilla gorilla; orange x: low elevation G. beringei graueri; blue squares: G. b. beringei. Least squares regression line through all points plotted. See Table 3 for regression statistics.

ajpa24443-sup-0004-FigureS4.pdfPDF document, 1.1 MB

FIGURE S4: Prediction of known log-transformed body mass from femoral head superoinferior breadth in individuals 10+ years of age. Red filled circles: G. gorilla gorilla; orange x: low elevation G. beringei graueri; blue squares: G. b. beringei. Least squares regression line through all points plotted. See Table 3 for regression statistics.

ajpa24443-sup-0005-FigureS5.pdfPDF document, 1.1 MB

FIGURE S5: Prediction of known log-transformed body mass from femoral distal metaphyseal mediolateral breadth in infants and juveniles. Red filled circles: G. gorilla gorilla; blue squares: G. b. beringei. Least squares regression line through all points plotted. See Table 3 for regression statistics.

ajpa24443-sup-0006-FigureS6.pdfPDF document, 1.1 MB

FIGURE S6: Prediction of known log-transformed body mass from tibial plateau metaphyseal mediolateral breadth in infants and juveniles. Red filled circles: G. gorilla gorilla; blue squares: G. b. beringei. Least squares regression line through all points plotted. See Table 3 for regression statistics.

ajpa24443-sup-0007-FigureS7.pdfPDF document, 1.2 MB

FIGURE S7: Log-transformed bi-iliac breadth relative to body mass in adult G. gorilla gorilla (filled red circles); high elevation G. beringei graueri (green crosses); and G. b. beringei (blue squares). RMA regression lines fit through G. g. gorilla and G. b. beringei. Data from Boyle, 2019 and Boyle, pers. comm.

ajpa24443-sup-0008-TableS1.xlsxPDF document, 86.9 KB

TABLE S1: Supporting information.

ajpa24443-sup-0009-TableS2.xlsxPDF document, 13.6 KB

TABLE S2: Supporting information.

ajpa24443-sup-0010-TextS1.docxWord 2007 document , 18.7 KB

Appendix S1: Text S1: Description of variables in Table S1.

ajpa24443-sup-0011-TextS2.docxWord 2007 document , 16.8 KB

Appendix S2: Text S2: Data on bi-iliac breadth were obtained from Boyle (2019 and Boyle, pers. comm.) for 25 adult gorillas—17 G. g. gorilla, 6 G. b. beringei, and 2 high elevation G. b. graueri. Femoral head S-I breadths were available for 14 individuals. For the other 11 individuals, femoral head breadth was estimated from acetabular breadth using a least squares equation derived from the 14 individuals with both dimensions (r = 0.98, %SEE = 2.8%). Femoral head breadth was then used to estimate body mass using a least squares equation generated from our adult age group: log(body mass) = 3.195 × log(femoral head breadth) – 7.561 (n = 14, r = 0.914, %PE = 16.1%, QMLE = 1.019). A bivariate plot of log(bi-iliac breadth) on log(body mass) is given in Figure S7, with RMA regression lines for G. g. gorilla and G. b. beringei. Slopes were nonsignificantly different between these groups, but elevations were highly significantly different (p < 0.0001), with G. b. beringei higher. No statistics were calculated for G. b. graueri, but they group more closely with G. b. beringei.