Thamnophis butleri: Population traits

at T = 15 °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: 2025/06/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.631817 NaN 0.664341 0.664341 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.0023109 0.0023109 0.000739475 0.000739475 spec pop growth rate
t2 d NaN NaN NaN NaN 299.947 299.947 937.35 937.35 population doubling time
a_b d 104.959 NaN 104.292 NaN 99.4899 98.506 99.4899 98.506 age at birth
t_p d 2864.71 NaN 1893.65 NaN 720.174 779.579 720.174 779.579 time since birth at puberty
S_b - 0.999996 NaN 0.999996 NaN 0.999997 0.999997 0.999997 0.999997 survival probability at birth
S_p - 0.999972 NaN 0.585981 NaN 0.999979 0.999982 0.475688 0.455043 survival probability at puberty
theta_0b - 0.0188456 NaN 0.0793348 NaN 0.205563 0.203727 0.301636 0.319646 frac of ind that is embryo
theta_bp - 0.0188535 NaN 0.0600228 NaN 0.163382 0.162289 0.191736 0.19894 fraction of individuals that is juvenile
theta_pi - 0.962301 NaN 0.860642 NaN 0.631055 0.633984 0.506627 0.481414 frac of ind that is adult
L_bi cm 2.07401 NaN 2.08834 NaN 2.14829 2.27546 2.19853 2.2886 mean structural length of post-natals
L2_bi cm^2 4.34119 NaN 4.4719 NaN 5.07808 5.76893 5.52087 6.12288 mean squared structural length of post-natals
L3_bi cm^3 9.14263 NaN 9.72931 NaN 12.9243 15.878 15.2314 18.2735 mean cubed structural length of post-natals
Ww_bi g 21.5171 NaN 23.5758 NaN 40.611 53.3781 47.8606 61.4313 mean wet weight of post-natals
L_pi cm 2.09229 NaN 2.15458 NaN 2.38552 2.53767 2.57269 2.72791 mean structural length of adults
L2_pi cm^2 4.40062 NaN 4.69281 NaN 5.99542 6.83993 7.04987 8.0244 mean squared structural length of adults
L3_pi cm^3 9.29221 NaN 10.303 NaN 15.7699 19.4222 20.3021 25.0343 mean cubed structural length of adults
Ww_pi g 21.8692 NaN 24.966 NaN 49.5527 65.2928 63.7939 84.1597 mean wet weight of adults
R 1/d 0 NaN 0.00137973 NaN 0.00899084 0.00913357 0.0135259 0.0144855 mean reproduction rate of adults
J_X g/d 0.277666 NaN 0.300749 NaN 0.514069 0.643855 0.558894 0.683359 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.0580987 0.0569886 0.0201528 0.0197741 yield of living structure on food
Y_VX_d mol/mol 0.00656989 NaN 0.013015 NaN 0.00017035 0.000151649 0.0278565 0.028238 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.124461 0.134594 0.0431719 0.0467018 yield of living reserve on food
Y_EX_d mol/mol 0.00889232 NaN 0.0185226 NaN 0.000364928 0.000358159 0.0596749 0.0666915 yield of dead reserve on food
Y_CX mol/mol 0.71107 NaN 0.698009 NaN 0.574868 0.567558 0.601062 0.592491 yield of CO2 on food
Y_HX mol/mol 0.756043 NaN 0.742156 NaN 0.611228 0.603455 0.639078 0.629965 yield of H2O on food
Y_OX mol/mol -0.902512 NaN -0.885934 NaN -0.729641 -0.720362 -0.762887 -0.752008 yield of O2 on food
Y_NX mol/mol 0.164093 NaN 0.161079 NaN 0.132662 0.130975 0.138707 0.136729 yield of N-waste on food
mu_TX J/mol 456317 NaN 447944 NaN 368237 363315 385161 379455 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