Psammobates geometricus: Population traits

at T = 24 °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 - 0.610258 NaN 0.619842 0.619842 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000491414 0.000491414 0.000162662 0.000162662 spec pop growth rate
t2 d NaN NaN NaN NaN 1410.52 1410.52 4261.27 4261.27 population doubling time
a_b d 345.813 NaN 344.904 NaN 318.692 330.119 318.692 330.119 age at birth
t_p d 29691.4 NaN 20057.3 NaN 5012.48 7275.07 5012.48 7275.07 time since birth at puberty
S_b - 1 NaN 1 NaN 1 1 1 1 survival probability at birth
S_p - 0.999998 NaN 0.726389 NaN 0.999999 0.999998 0.61486 0.664148 survival probability at puberty
theta_0b - 0.00470475 NaN 0.0378025 NaN 0.144872 0.149652 0.24407 0.214377 frac of ind that is embryo
theta_bp - 0.00471032 NaN 0.0321838 NaN 0.123969 0.12735 0.181729 0.165593 fraction of individuals that is juvenile
theta_pi - 0.990585 NaN 0.930014 NaN 0.731159 0.722997 0.5742 0.620031 frac of ind that is adult
L_bi cm 4.40162 NaN 4.17625 NaN 3.34982 2.94553 3.25824 3.01726 mean structural length of post-natals
L2_bi cm^2 19.6117 NaN 18.2365 NaN 13.0515 9.77581 13.3739 10.8574 mean squared structural length of post-natals
L3_bi cm^3 87.9899 NaN 81.5004 NaN 57.5806 35.9737 66.1181 45.1569 mean cubed structural length of post-natals
Ww_bi g 121.306 NaN 112.844 NaN 93.3067 53.9527 107.141 67.7255 mean wet weight of post-natals
L_pi cm 4.41491 NaN 4.26534 NaN 3.63181 3.17401 3.75974 3.38509 mean structural length of adults
L2_pi cm^2 19.6926 NaN 18.7786 NaN 14.7798 11.0175 16.7157 13.0363 mean squared structural length of adults
L3_pi cm^3 88.3885 NaN 84.1776 NaN 66.518 41.513 85.538 56.0267 mean cubed structural length of adults
Ww_pi g 121.856 NaN 116.551 NaN 107.789 62.2605 138.61 84.0278 mean wet weight of adults
R 1/d 0 NaN 0 NaN 0.000294446 0 0.00132583 0 mean reproduction rate of adults
J_X g/d 0.190253 NaN 0.17969 NaN 0.207474 0.125177 0.212599 0.139026 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 0.136383 0.141223 0.0505878 0.0528339 yield of living structure on food
Y_VX_d mol/mol 0.00687762 NaN 0.0152349 NaN 2.35425e-05 3.03356e-05 0.0710857 0.0683906 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.0846192 0.0705809 0.0313874 0.0264054 yield of living reserve on food
Y_EX_d mol/mol 0.00260412 NaN 0.00585908 NaN 1.46071e-05 1.51612e-05 0.0441054 0.0341804 yield of dead reserve on food
Y_CX mol/mol 0.715929 NaN 0.706494 NaN 0.544038 0.551505 0.563435 0.575912 yield of CO2 on food
Y_HX mol/mol 0.76121 NaN 0.751178 NaN 0.578447 0.586387 0.599071 0.612337 yield of H2O on food
Y_OX mol/mol -0.908679 NaN -0.896704 NaN -0.69051 -0.699987 -0.715129 -0.730965 yield of O2 on food
Y_NX mol/mol 0.165214 NaN 0.163037 NaN 0.125547 0.12727 0.130024 0.132903 yield of N-waste on food
mu_TX J/mol 459566 NaN 453704 NaN 351622 356835 363797 372080 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