Aldabrachelys gigantea: Population traits

at T = 24 °C with background hazards for embryo, juv, adult: 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 std f_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.383578 0.383578 0.414499 0.414499 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000407998 0.000407998 0.000101328 0.000101328 spec pop growth rate
t2 d NaN NaN NaN NaN 1698.9 1698.9 6840.63 6840.63 population doubling time
a_b d 227.219 221.529 224.389 218.737 193.806 188.752 193.806 188.752 age at birth
t_p d 77960.4 32873.1 43469.8 26975.1 8884.23 7406.47 8884.23 7406.47 time since birth at puberty
S_b - 0.999999 0.999999 0.999999 0.999999 1 1 1 1 survival probability at birth
S_p - 0.999996 0.999997 0.857297 0.836827 0.999998 0.999998 0.725106 0.698067 survival probability at puberty
theta_0b - 0.00294402 0.00272232 0.0436754 0.0513839 0.0758974 0.0740017 0.170902 0.186435 frac of ind that is embryo
theta_bp - 0.00295569 0.00273199 0.040582 0.0471518 0.0702709 0.0686461 0.143023 0.153142 fraction of individuals that is juvenile
theta_pi - 0.9941 0.994546 0.915743 0.901464 0.853832 0.857352 0.686075 0.660424 frac of ind that is adult
L_bi cm 16.9849 19.8929 13.0515 14.4675 10.688 11.8272 9.34302 9.72639 mean structural length of post-natals
L2_bi cm^2 303.161 416.623 213.75 274.301 150.62 189.325 141.207 161.437 mean squared structural length of post-natals
L3_bi cm^3 5551.46 8949.79 3912.06 5881.81 2665.45 3852.43 3256.51 4254.34 mean cubed structural length of post-natals
Ww_bi g 5913.24 9631.78 4187.56 6366.14 3118.3 4617.75 3809.78 5099.51 mean wet weight of post-natals
L_pi cm 17.024 19.937 13.46 15.0225 11.2374 12.4495 10.4572 11.0459 mean structural length of adults
L2_pi cm^2 304.019 417.727 222.571 287.871 161.688 203.164 167.304 195.084 mean squared structural length of adults
L3_pi cm^3 5567.8 8974.22 4082.93 6186.45 2879.47 4155.5 3921.97 5225.49 mean cubed structural length of adults
Ww_pi g 5930.64 9658.07 4370.46 6695.87 3368.68 4981.03 4588.3 6263.58 mean wet weight of adults
R 1/d 0 0.00102214 0 0 0.000112451 0.00158425 0.000273965 0.00146825 mean reproduction rate of adults
J_X g/d 2.38374 3.8305 1.81619 2.72527 3.08755 4.53802 2.8946 3.86956 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 0.109375 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.35222 0.346358 0.113997 0.111404 yield of living structure on food
Y_VX_d mol/mol 0.0403234 0.0381799 0.0850826 0.0823675 0.000225619 0.000189737 0.195044 0.194584 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0598408 0.0688074 0.0193677 0.0221315 yield of living reserve on food
Y_EX_d mol/mol 0.00262781 0.00290936 0.00599167 0.00678248 3.83317e-05 3.76932e-05 0.0331372 0.0386561 yield of dead reserve on food
Y_CX mol/mol 0.688735 0.690248 0.649635 0.651198 0.388619 0.386126 0.429877 0.425627 yield of CO2 on food
Y_HX mol/mol 0.732296 0.733904 0.690723 0.692385 0.413199 0.410548 0.457066 0.452547 yield of H2O on food
Y_OX mol/mol -0.874164 -0.876084 -0.824537 -0.826521 -0.493248 -0.490083 -0.545613 -0.540219 yield of O2 on food
Y_NX mol/mol 0.158939 0.159288 0.149916 0.150277 0.0896814 0.089106 0.0992024 0.0982217 yield of N-waste on food
mu_TX J/mol 443137 444037 419347 420252 258967 257013 284261 281279 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