Stigmochelys pardalis: 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 - 0.689424 0.700575 0.850288 0.850288 1 1 scaled functional response
r 1/d 0 0 0.000525826 0.000160486 0.000690384 0.000215041 spec pop growth rate
t2 d NaN NaN 1318.21 4319.05 1004 3223.32 population doubling time
a_b d 453.535 452.979 446.794 446.794 442.308 442.308 age at birth
t_p d 20906.4 12540.9 5928.15 5928.15 4722.94 4722.94 time since birth at puberty
S_b - 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_p - 0.99999 0.378207 0.99999 0.355355 0.999991 0.339397 survival probability at puberty
theta_0b - 0.0142269 0.214895 0.209438 0.42215 0.263162 0.465461 frac of ind that is embryo
theta_bp - 0.0142293 0.130606 0.165606 0.233168 0.193933 0.246253 fraction of individuals that is juvenile
theta_pi - 0.971544 0.654498 0.624956 0.344683 0.542905 0.288286 frac of ind that is adult
L_bi cm 12.2635 9.83451 7.34689 6.47515 6.93497 6.06363 mean structural length of post-natals
L2_bi cm^2 154.943 114.11 65.4668 58.0923 59.6998 52.425 mean squared structural length of post-natals
L3_bi cm^3 1986.31 1420.38 669.476 654.778 606.702 600.511 mean cubed structural length of post-natals
Ww_bi g 10502.5 7608.72 4209.56 4117.15 4379.72 4335.02 mean wet weight of post-natals
L_pi cm 12.3958 11.1762 8.42652 8.72262 8.22872 8.52109 mean structural length of adults
L2_pi cm^2 157.057 134.911 79.9156 90.5144 77.012 88.3186 mean squared structural length of adults
L3_pi cm^3 2014.88 1697.45 836.99 1075.06 809.511 1083.75 mean cubed structural length of adults
Ww_pi g 10653.6 9092.92 5262.87 6759.81 5843.78 7823.45 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 15.6875 11.7401 8.17488 7.25402 8.76733 7.69896 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 0.0430621 0.0144861 0.0477748 0.016773 yield of living structure on food
Y_VX_d mol/mol 0.00474548 0.0109812 6.9611e-05 0.0237721 3.56285e-05 0.0268906 yield of dead structure on food
Y_EX mol/mol 0 0 0.227706 0.0766005 0.297106 0.10431 yield of living reserve on food
Y_EX_d mol/mol 0.020346 0.0478428 0.000368092 0.125703 0.00022157 0.16723 yield of dead reserve on food
Y_CX mol/mol 0.703246 0.675838 0.503278 0.528176 0.443208 0.467531 yield of CO2 on food
Y_HX mol/mol 0.747725 0.718584 0.535109 0.561582 0.47124 0.497101 yield of H2O on food
Y_OX mol/mol -0.892581 -0.857795 -0.638776 -0.670377 -0.562533 -0.593404 yield of O2 on food
Y_NX mol/mol 0.162288 0.155963 0.116141 0.121887 0.102279 0.107892 yield of N-waste on food
mu_TX J/mol 451017 433085 319826 336156 280073 296057 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