Fig. 2
Exponential relationship, as described by Gompertz regression, in male (n = 11) and female (n = 15) walruses between age (y) and weight (kg). Males gained weight at a significantly (χ2 = 34.9, p < 0.0001) faster rate than females, with an absolute growth rate (RG) of 99 kg/year for males compared to 57.6 kg/year for females. Males reached asymptote weight by age 13.5 (95% CI: 1198 to 1564 kg), and females (95% CI: 816 to 1075 kg) by age 12.3 y