Sex ratio and sexual size dimorphism
Adult sex-ratio (males : females = 1.17 : 1, total n = 63) did not differ significantly from equality (binomial test with df = 1: P > 0.1).
Excluding young specimens (< 100 cm total length), we measured the total length of 22 males and 27 females. There was considerable sexual size dimorphism: the males (x_ = 166.4 cm, SD = 25.9) attained much larger sizes than the females (x = 146.9 cm, SD = 20.3) (Student t-test: t = 2.95, df = 47, P = 0.0049). The maximum length attained by males was 211.5 cm, and the maximum length attained by females was 174.7 cm.