Gopherus polyphemus: 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 - 0.748354 0.748354 0.753307 0.753307 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00062036 0.00062036 0.000212456 0.000212456 spec pop growth rate
t2 d NaN NaN NaN NaN 1117.33 1117.33 3262.55 3262.55 population doubling time
a_b d 325.049 327.193 324.738 326.876 312.21 314.085 312.21 314.085 age at birth
t_p d 21667.9 5.47454e+22 14588 5.47454e+22 4679.38 5184.88 4679.38 5184.88 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_p - 0.999999 0.999999 0.550103 0.5607 0.999999 0.999999 0.489347 0.498282 survival probability at puberty
theta_0b - 0.0050828 0.0051973 0.0650772 0.0616164 0.176031 0.176987 0.32567 0.318821 frac of ind that is embryo
theta_bp - 0.00508551 0.00520017 0.0479998 0.0458861 0.145091 0.145711 0.212797 0.210117 fraction of individuals that is juvenile
theta_pi - 0.989832 0.989603 0.886923 0.892498 0.678878 0.677302 0.461533 0.471062 frac of ind that is adult
L_bi cm 9.6679 9.24822 8.97813 8.63615 6.31025 6.15036 5.8673 5.79086 mean structural length of post-natals
L2_bi cm^2 94.5337 86.4733 85.2455 78.5395 46.7589 44.1339 44.2851 42.6071 mean squared structural length of post-natals
L3_bi cm^3 929.772 813.202 829.481 731.053 391.867 356.766 404.531 375.961 mean cubed structural length of post-natals
Ww_bi g 1796.53 1538.01 1607.87 1386.95 880.018 781.679 908.457 823.737 mean wet weight of post-natals
L_pi cm 9.70246 9.28145 9.30704 8.93179 7.00931 6.82338 7.1954 7.0479 mean structural length of adults
L2_pi cm^2 94.9746 86.8825 89.4002 82.1463 54.7574 51.6443 60.5463 57.6303 mean squared structural length of adults
L3_pi cm^3 934.415 817.341 873.022 767.378 469.428 427.403 578.363 531.582 mean cubed structural length of adults
Ww_pi g 1805.5 1545.84 1692.26 1455.87 1054.2 936.447 1298.83 1164.7 mean wet weight of adults
R 1/d 0 0 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 3.45648 3.02295 3.1375 2.76377 2.28457 2.06165 2.1637 1.99033 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 0.106409 0.107353 0.0397212 0.0401316 yield of living structure on food
Y_VX_d mol/mol 0.00451857 0.00458762 0.0107344 0.0108075 1.16703e-05 1.23179e-05 0.0577835 0.0576232 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.132554 0.127859 0.0494809 0.0477974 yield of living reserve on food
Y_EX_d mol/mol 0.00421234 0.00408895 0.0100731 0.00969649 1.45378e-05 1.46708e-05 0.0719812 0.0686301 yield of dead reserve on food
Y_CX mol/mol 0.716539 0.716583 0.706727 0.706973 0.529454 0.532502 0.545722 0.54961 yield of CO2 on food
Y_HX mol/mol 0.761859 0.761905 0.751426 0.751688 0.562941 0.566181 0.580238 0.584371 yield of H2O on food
Y_OX mol/mol -0.909453 -0.909509 -0.896999 -0.897312 -0.671999 -0.675868 -0.692647 -0.697581 yield of O2 on food
Y_NX mol/mol 0.165355 0.165365 0.163091 0.163148 0.122182 0.122885 0.125936 0.126833 yield of N-waste on food
mu_TX J/mol 459855 459887 453634 453802 340415 342490 350798 353398 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