Ceratotherium simum: Population traits

at T = 37.4 °C with background hazards for embryo, baby, juv, adult: 0, 0, 0, 0 1/d

Ln survival probability as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
Ln survivor function of the stable age distribution as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
model stx f_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.988414 0.988414 0.995493 0.995493 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000424805 0.000424805 4.81978e-05 4.81978e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 1631.68 1631.68 14381.3 14381.3 population doubling time
a_b d 91.4302 NaN 91.4302 NaN 91.4303 NaN 91.4303 NaN age at birth
t_x d 3137.77 NaN 2110.98 NaN 1911.91 NaN 1911.91 NaN time since birth at weaning
t_p d 401.154 NaN 397.101 NaN 394.588 NaN 394.588 NaN time since birth at puberty
S_b - 1 NaN 1 NaN 1 NaN 1 NaN survival probability at birth
S_x - 1 NaN 0.510399 NaN 1 NaN 0.50925 NaN survival probability at weaning
S_p - 1 NaN 0.0983978 NaN 1 NaN 0.0982814 NaN survival probability at puberty
theta_0b - 0.00518588 NaN 0.0477288 NaN 0.038128 NaN 0.0675247 NaN frac of ind that is embryo
theta_bx - 0.0051857 NaN 0.0337202 NaN 0.0366742 NaN 0.0474542 NaN fraction of individuals that is baby
theta_xp - 0.172781 NaN 0.151283 NaN 0.498694 NaN 0.190499 NaN fraction of individuals that is juvenile
theta_pi - 0.816848 NaN 0.767268 NaN 0.426504 NaN 0.694522 NaN frac of ind that is adult
L_bi cm 79.5093 NaN 77.1411 NaN 72.6658 NaN 75.612 NaN mean structural length of post-natals
L2_bi cm^2 6359.77 NaN 6100.6 NaN 5479.16 NaN 5922.96 NaN mean squared structural length of post-natals
L3_bi cm^3 510392 NaN 488308 NaN 422314 NaN 472156 NaN mean cubed structural length of post-natals
Ww_bi g 1.73787e+06 NaN 1.67108e+06 NaN 1.44987e+06 NaN 1.62099e+06 NaN mean wet weight of post-natals
L_pi cm 80.9523 NaN 81.5168 NaN 81.7587 NaN 81.8657 NaN mean structural length of adults
L2_pi cm^2 6553.27 NaN 6644.99 NaN 6684.53 NaN 6702.01 NaN mean squared structural length of adults
L3_pi cm^3 530502 NaN 541679 NaN 546527 NaN 548667 NaN mean cubed structural length of adults
Ww_pi g 1.80634e+06 NaN 1.85373e+06 NaN 1.87631e+06 NaN 1.88366e+06 NaN mean wet weight of adults
R 1/d 6.9226e-05 NaN 0.00068015 NaN 0.00095848 NaN 0.00106104 NaN mean reproduction rate of adults
J_X g/d 16692.8 NaN 16127.2 NaN 14550 NaN 15728.5 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.0123299 NaN 0.00144685 NaN yield of living structure on food
Y_VX_d mol/mol 0.00181201 NaN 0.0042499 NaN 1.37004e-05 NaN 0.00475201 NaN yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.0300007 NaN 0.00352042 NaN yield of living reserve on food
Y_EX_d mol/mol 0.00435783 NaN 0.0102941 NaN 3.33351e-05 NaN 0.0115624 NaN yield of dead reserve on food
Y_CX mol/mol 0.818121 NaN 0.810375 NaN 0.784629 NaN 0.804143 NaN yield of CO2 on food
Y_HX mol/mol 0.697737 NaN 0.691131 NaN 0.669173 NaN 0.685815 NaN yield of H2O on food
Y_OX mol/mol -0.961845 NaN -0.952738 NaN -0.922469 NaN -0.945411 NaN yield of O2 on food
Y_NX mol/mol 0.0663341 NaN 0.0657061 NaN 0.0636186 NaN 0.0652008 NaN yield of N-waste on food
mu_TX J/mol 461104 NaN 456697 NaN 442048 NaN 453151 NaN yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female differ.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer