Centrochelys sulcata: 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_minf f_max date: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.49473 0.518293 0.759146 0.759146 1 1 scaled functional response
r 1/d 0 0 0.00108815 0.000164852 0.00141529 0.000209357 spec pop growth rate
t2 d NaN NaN 636.997 4204.65 489.755 3310.84 population doubling time
a_b d 160.447 159.658 154.068 154.068 150.904 150.904 age at birth
t_p d 9566.7 4567.07 1976.74 1976.74 1551.14 1551.14 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_p - 0.999999 0.406034 0.999999 0.359132 0.999999 0.3339 survival probability at puberty
theta_0b - 0.00573353 0.153579 0.15433 0.368638 0.192284 0.417784 frac of ind that is embryo
theta_bp - 0.00573512 0.0971218 0.130537 0.214447 0.155333 0.233275 fraction of individuals that is juvenile
theta_pi - 0.988531 0.7493 0.715133 0.416916 0.652383 0.34894 frac of ind that is adult
L_bi cm 13.4764 11.5436 8.44858 8.21212 8.24573 7.75638 mean structural length of post-natals
L2_bi cm^2 184.965 154.631 91.3655 108.274 90.7847 108.484 mean squared structural length of post-natals
L3_bi cm^3 2559.84 2179.61 1164 1819.09 1226.48 2134.55 mean cubed structural length of post-natals
Ww_bi g 7049.26 6184.22 4296.48 6714.49 5574.28 9701.37 mean wet weight of post-natals
L_pi cm 13.5382 12.6829 9.45364 10.9781 9.49347 11.0142 mean structural length of adults
L2_pi cm^2 185.991 173.673 106.429 159.742 110.198 175.31 mean squared structural length of adults
L3_pi cm^3 2574.56 2459.27 1371.53 2742.27 1511.58 3544.28 mean cubed structural length of adults
Ww_pi g 7089.77 6977.72 5062.49 10122 6870.02 16108.5 mean wet weight of adults
R 1/d 0 0 0 0.000607846 0 0.00339977 mean reproduction rate of adults
J_X g/d 20.3527 17.8252 15.4266 18.2815 20.1918 24.1284 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 yield of faeces on food
Y_VX mol/mol 0 0 0.0821053 0.0164035 0.0859671 0.018521 yield of living structure on food
Y_VX_d mol/mol 0.00495417 0.0124115 1.94295e-05 0.0300769 9.74323e-06 0.033781 yield of dead structure on food
Y_EX mol/mol 0 0 0.220955 0.0441439 0.304747 0.0656556 yield of living reserve on food
Y_EX_d mol/mol 0.00868855 0.0228038 5.22871e-05 0.0809406 3.45391e-05 0.119751 yield of dead reserve on food
Y_CX mol/mol 0.712548 0.69502 0.477338 0.584236 0.406141 0.530494 yield of CO2 on food
Y_HX mol/mol 0.757615 0.738979 0.507528 0.621188 0.431829 0.564047 yield of H2O on food
Y_OX mol/mol -0.904388 -0.882141 -0.605852 -0.741531 -0.515487 -0.67332 yield of O2 on food
Y_NX mol/mol 0.164434 0.160389 0.110155 0.134824 0.0937249 0.122422 yield of N-waste on food
mu_TX J/mol 457220 445925 304508 373884 257308 338401 yield of heat on food

Remarks

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