Spermophilus xanthoprymnus: Population traits

at T = 37.5 °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_minf f_max date: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.975135 0.999127 0.999564 0.999564 1 1 scaled functional response
r 1/d 0 0 0.00348633 1.59641e-05 0.00352148 3.16734e-05 spec pop growth rate
t2 d NaN NaN 198.819 43419.1 196.834 21884.2 population doubling time
a_b d 13.3065 13.3065 13.3065 13.3065 13.3065 13.3065 age at birth
t_x d 658.291 389.739 388.061 388.061 386.412 386.412 time since birth at weaning
t_p d 47.64 47.0374 47.0269 47.0269 47.0163 47.0163 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_x - 0.999999 0.367378 0.999999 0.367319 0.999999 0.36726 survival probability at weaning
S_p - 0.96381 0.0597886 0.994272 0.0597447 0.994359 0.0597008 survival probability at puberty
theta_0b - 0.00843846 0.109091 0.0461072 0.110336 0.0465383 0.111565 frac of ind that is embryo
theta_bx - 0.00843841 0.0648415 0.0440168 0.0655637 0.0444076 0.0662764 fraction of individuals that is baby
theta_xp - 0.405621 0.250816 0.675435 0.252012 0.676318 0.253176 fraction of individuals that is juvenile
theta_pi - 0.577502 0.575251 0.234441 0.572088 0.232736 0.568983 frac of ind that is adult
L_bi cm 2.02892 1.9308 1.86696 1.9291 1.86552 1.92743 mean structural length of post-natals
L2_bi cm^2 4.15623 3.92319 3.64943 3.91882 3.64516 3.91452 mean squared structural length of post-natals
L3_bi cm^3 8.55609 8.14776 7.31517 8.13916 7.30538 8.13072 mean cubed structural length of post-natals
Ww_bi g 303.276 295.708 265.604 295.522 265.361 295.341 mean wet weight of post-natals
L_pi cm 2.08367 2.13486 2.13559 2.13579 2.13651 2.13672 mean structural length of adults
L2_pi cm^2 4.34167 4.55763 4.56073 4.5616 4.56467 4.56557 mean squared structural length of adults
L3_pi cm^3 9.0466 9.7299 9.73984 9.74262 9.75244 9.75534 mean cubed structural length of adults
Ww_pi g 320.663 353.129 353.64 353.741 354.248 354.353 mean wet weight of adults
R 1/d 0.00110079 0.0142517 0.0144386 0.0144916 0.0146764 0.0147315 mean reproduction rate of adults
J_X g/d 22.113 21.3867 19.903 21.3722 19.8884 21.3581 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 0.00128137 6.0796e-06 0.00129351 1.20576e-05 yield of living structure on food
Y_VX_d mol/mol 0.000261606 0.000631012 3.04662e-05 0.000633209 2.99401e-05 0.00063543 yield of dead structure on food
Y_EX mol/mol 0 0 0.0452434 0.000214662 0.0456918 0.000425924 yield of living reserve on food
Y_EX_d mol/mol 0.00901121 0.0222704 0.00107572 0.0223577 0.00105761 0.022446 yield of dead reserve on food
Y_CX mol/mol 0.815251 0.802644 0.77977 0.802357 0.779361 0.802073 yield of CO2 on food
Y_HX mol/mol 0.695289 0.684537 0.665029 0.684293 0.66468 0.68405 yield of H2O on food
Y_OX mol/mol -0.958471 -0.943649 -0.916756 -0.943312 -0.916275 -0.942977 yield of O2 on food
Y_NX mol/mol 0.0661014 0.0650793 0.0632246 0.065056 0.0631914 0.0650329 yield of N-waste on food
mu_TX J/mol 459349 451996 438655 451829 438417 451663 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