Thamnophis sirtalis: 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: 2022/12/25
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.543936 0.543936 0.586611 0.586611 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00313275 0.00313275 0.000621237 0.000621237 spec pop growth rate
t2 d NaN NaN NaN NaN 221.259 221.259 1115.75 1115.75 population doubling time
a_b d 91.4873 93.3729 90.9121 92.6994 87.6733 88.8611 87.6733 88.8611 age at birth
t_p d 2660.55 4.85563e+21 1459.97 4.85563e+21 667.679 814.881 667.679 814.881 time since birth at puberty
S_b - 0.999997 0.999996 0.999997 0.999996 0.999997 0.999997 0.999997 0.999997 survival probability at birth
S_p - 0.999983 0.999976 0.40491 0.44442 0.999986 0.999982 0.339977 0.36283 survival probability at puberty
theta_0b - 0.0170167 0.018956 0.188273 0.154852 0.240223 0.243074 0.418643 0.388695 frac of ind that is embryo
theta_bp - 0.0170205 0.0189607 0.11823 0.101786 0.182552 0.184034 0.229944 0.220035 fraction of individuals that is juvenile
theta_pi - 0.965963 0.962083 0.693496 0.743362 0.577225 0.572892 0.351413 0.39127 frac of ind that is adult
L_bi cm 3.66581 2.96278 3.29513 2.814 2.81593 2.56951 2.7772 2.66273 mean structural length of post-natals
L2_bi cm^2 13.7699 8.95084 12.2495 8.58479 9.80339 7.90347 11.1816 9.53591 mean squared structural length of post-natals
L3_bi cm^3 52.3923 27.3409 48.1784 27.3008 39.9409 27.8299 57.2053 41.2586 mean cubed structural length of post-natals
Ww_bi g 196.839 87.6834 191.429 92.2822 242.388 140.751 347.159 208.667 mean wet weight of post-natals
L_pi cm 3.70898 2.99802 3.65435 3.04087 3.29804 2.98926 3.78113 3.47318 mean structural length of adults
L2_pi cm^2 13.9861 9.09972 14.0931 9.5744 12.3639 9.91944 17.4625 14.0412 mean squared structural length of adults
L3_pi cm^3 53.2824 27.8466 56.0913 30.818 51.8433 36.0826 93.2865 63.3681 mean cubed structural length of adults
Ww_pi g 200.183 89.3053 222.869 104.171 314.619 182.49 566.124 320.487 mean wet weight of adults
R 1/d 0 0 0 0 0 0 0.00897867 0.00203619 mean reproduction rate of adults
J_X g/d 1.76014 0.915903 1.68863 0.947366 2.30379 1.48681 2.62768 1.79391 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 0.0543125 0.0586383 0.0135245 0.014288 yield of living structure on food
Y_VX_d mol/mol 0.00653017 0.00704631 0.0147295 0.0154355 8.46513e-05 0.000113995 0.0248257 0.0258292 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.275292 0.237928 0.0685511 0.0579743 yield of living reserve on food
Y_EX_d mol/mol 0.0180039 0.0155515 0.0437956 0.0367396 0.000429069 0.000462541 0.125833 0.104803 yield of dead reserve on food
Y_CX mol/mol 0.703699 0.705272 0.676081 0.681241 0.455412 0.482204 0.534536 0.558781 yield of CO2 on food
Y_HX mol/mol 0.748206 0.749879 0.718842 0.724328 0.484216 0.512703 0.568345 0.594122 yield of H2O on food
Y_OX mol/mol -0.893156 -0.895153 -0.858103 -0.864651 -0.578023 -0.612029 -0.67845 -0.709222 yield of O2 on food
Y_NX mol/mol 0.162392 0.162755 0.156019 0.157209 0.105095 0.111278 0.123355 0.128949 yield of N-waste on food
mu_TX J/mol 451408 452481 433434 436904 288526 306579 340394 356621 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