Anguis fragilis: 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_minf f_max date: 2025/05/19
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.441265 0.452362 0.726181 0.726181 1 1 scaled functional response
r 1/d 0 0 0.00335603 0.00122274 0.00538216 0.00179705 spec pop growth rate
t2 d NaN NaN 206.538 566.881 128.786 385.713 population doubling time
a_b d 60.5674 60.3075 55.6594 55.6594 52.8789 52.8789 age at birth
t_p d 2076.1 1488.61 393.816 393.816 260.122 260.122 time since birth at puberty
S_b - 0.999999 0.999999 0.999999 0.999999 0.999999 0.999999 survival probability at birth
S_p - 0.999991 0.783174 0.999994 0.653061 0.999995 0.575152 survival probability at puberty
theta_0b - 0.00883544 0.0321502 0.170316 0.225159 0.247599 0.310027 frac of ind that is embryo
theta_bp - 0.00884741 0.028413 0.141403 0.169866 0.186372 0.213927 fraction of individuals that is juvenile
theta_pi - 0.982317 0.939437 0.688281 0.604976 0.566029 0.476046 frac of ind that is adult
L_bi cm 1.19822 1.19104 1.15009 1.18645 1.17537 1.21088 mean structural length of post-natals
L2_bi cm^2 1.44683 1.44422 1.4495 1.59932 1.56203 1.76369 mean squared structural length of post-natals
L3_bi cm^3 1.75635 1.77237 1.97834 2.39514 2.32588 3.03401 mean cubed structural length of post-natals
Ww_bi g 2.40613 2.44457 3.18284 3.85339 4.27592 5.57777 mean wet weight of post-natals
L_pi cm 1.20307 1.2071 1.24316 1.32492 1.32453 1.43313 mean structural length of adults
L2_pi cm^2 1.45593 1.4747 1.64709 1.91292 1.90346 2.32422 mean squared structural length of adults
L3_pi cm^3 1.76957 1.81723 2.31441 2.97303 2.96525 4.2291 mean cubed structural length of adults
Ww_pi g 2.42424 2.50645 3.72352 4.78312 5.45134 7.77483 mean wet weight of adults
R 1/d 0 0.000109128 0.00924646 0.0135049 0.0187747 0.0270798 mean reproduction rate of adults
J_X g/d 0.0332975 0.0340735 0.0548985 0.0605728 0.0814676 0.0919856 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 0.120939 0.0483488 0.153659 0.0592732 yield of living structure on food
Y_VX_d mol/mol 0.00841594 0.0160178 7.31624e-05 0.0571799 2.66709e-05 0.0757259 yield of dead structure on food
Y_EX mol/mol 0 0 0.0736325 0.0294366 0.128829 0.0496954 yield of living reserve on food
Y_EX_d mol/mol 0.00311357 0.00607501 4.45441e-05 0.0348133 2.23612e-05 0.0634895 yield of dead reserve on food
Y_CX mol/mol 0.714265 0.705682 0.565448 0.585688 0.494071 0.521983 yield of CO2 on food
Y_HX mol/mol 0.759441 0.750315 0.601211 0.622731 0.52532 0.554998 yield of H2O on food
Y_OX mol/mol -0.906567 -0.895674 -0.717683 -0.743373 -0.62709 -0.662517 yield of O2 on food
Y_NX mol/mol 0.16483 0.16285 0.130488 0.135159 0.114016 0.120458 yield of N-waste on food
mu_TX J/mol 458536 453203 365104 377802 319225 336870 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