Thamnophis saurita: Population traits

at T = 26 °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 - 0.499777 NaN 0.629419 0.629419 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00262938 0.00262938 0.000335197 0.000335197 spec pop growth rate
t2 d NaN NaN NaN NaN 263.616 263.616 2067.88 2067.88 population doubling time
a_b d 93.9025 NaN 91.2905 NaN 87.0496 89.0617 87.0496 89.0617 age at birth
t_p d 2189.73 NaN 996.807 NaN 580.449 725.91 580.449 725.91 time since birth at puberty
S_b - 0.999987 NaN 0.999988 NaN 0.999989 0.999986 0.999989 0.999986 survival probability at birth
S_p - 0.999922 NaN 0.455649 NaN 0.999945 0.999923 0.383626 0.416947 survival probability at puberty
theta_0b - 0.0221709 NaN 0.206457 NaN 0.204863 0.209185 0.353981 0.318855 frac of ind that is embryo
theta_bp - 0.0221784 NaN 0.138128 NaN 0.162978 0.165541 0.211767 0.198569 fraction of individuals that is juvenile
theta_pi - 0.955651 NaN 0.655415 NaN 0.632159 0.625275 0.434251 0.482576 frac of ind that is adult
L_bi cm 2.21592 NaN 2.14033 NaN 1.97712 1.76137 2.09551 1.94549 mean structural length of post-natals
L2_bi cm^2 5.07277 NaN 5.38713 NaN 4.81163 3.68893 6.25897 4.97022 mean squared structural length of post-natals
L3_bi cm^3 11.8282 NaN 14.7359 NaN 13.6417 8.80568 23.0245 14.9604 mean cubed structural length of post-natals
Ww_bi g 25.8709 NaN 36.7687 NaN 46.0474 25.307 77.7191 42.9953 mean wet weight of post-natals
L_pi cm 2.24868 NaN 2.4207 NaN 2.26203 2.00303 2.70478 2.40523 mean structural length of adults
L2_pi cm^2 5.17534 NaN 6.38241 NaN 5.85246 4.47194 8.95536 6.72857 mean squared structural length of adults
L3_pi cm^3 12.0903 NaN 17.7251 NaN 16.9782 10.9676 33.9399 20.8711 mean cubed structural length of adults
Ww_pi g 26.4442 NaN 44.2273 NaN 57.3098 31.5203 114.564 59.9824 mean wet weight of adults
R 1/d 0 NaN 0.00443942 NaN 0.0050892 0 0.0166971 0.00744092 mean reproduction rate of adults
J_X g/d 0.206203 NaN 0.275785 NaN 0.39135 0.236687 0.509068 0.318897 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 0.0916547 0.0978232 0.0151605 0.0157251 yield of living structure on food
Y_VX_d mol/mol 0.0171989 NaN 0.0362611 NaN 0.000594245 0.000797964 0.0423546 0.0448401 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.217726 0.183315 0.0360137 0.0294679 yield of living reserve on food
Y_EX_d mol/mol 0.0204189 NaN 0.0542169 NaN 0.00141163 0.00149534 0.100613 0.0840276 yield of dead reserve on food
Y_CX mol/mol 0.693068 NaN 0.650119 NaN 0.470632 0.493345 0.565892 0.582209 yield of CO2 on food
Y_HX mol/mol 0.736903 NaN 0.691238 NaN 0.500398 0.524548 0.601684 0.619032 yield of H2O on food
Y_OX mol/mol -0.879664 NaN -0.825152 NaN -0.59734 -0.626169 -0.718248 -0.738957 yield of O2 on food
Y_NX mol/mol 0.159939 NaN 0.150028 NaN 0.108607 0.113849 0.130591 0.134356 yield of N-waste on food
mu_TX J/mol 444865 NaN 417229 NaN 300550 315988 362225 373238 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