Psammobates oculiferus: Population traits

at T = 21 °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: 2025/02/13
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.232563 0.317805 0.658903 0.658903 1 1 scaled functional response
r 1/d 0 0 0.000217649 2.5688e-05 0.000400769 4.06112e-05 spec pop growth rate
t2 d NaN NaN 3184.7 26983.3 1729.54 17067.9 population doubling time
a_b d 278.039 264.042 234.142 234.142 219.354 219.354 age at birth
t_p d 51111.2 22223 5675.91 5675.91 3475.37 3475.37 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_p - 0.999999 0.812591 0.999999 0.643669 1 0.554905 survival probability at puberty
theta_0b - 0.00392092 0.0179649 0.0496738 0.0979229 0.0841118 0.179221 frac of ind that is embryo
theta_bp - 0.00392799 0.0161951 0.0472491 0.0779894 0.0770856 0.132107 fraction of individuals that is juvenile
theta_pi - 0.992151 0.96584 0.903077 0.824088 0.838803 0.688672 frac of ind that is adult
L_bi cm 1.62646 2.14404 3.09107 3.48636 3.38452 4.0031 mean structural length of post-natals
L2_bi cm^2 2.6545 4.68018 10.7782 14.0677 13.9751 21.7464 mean squared structural length of post-natals
L3_bi cm^3 4.3434 10.3279 40.5466 60.7166 65.8323 135.041 mean cubed structural length of post-natals
Ww_bi g 4.85928 12.0042 54.1908 81.1482 99.4534 204.007 mean wet weight of post-natals
L_pi cm 1.62894 2.16282 3.19517 3.71281 3.58968 4.55275 mean structural length of adults
L2_pi cm^2 2.66106 4.74107 11.2784 15.2854 15.1365 25.6679 mean squared structural length of adults
L3_pi cm^3 4.35665 10.483 42.5972 66.3374 71.7387 160.656 mean cubed structural length of adults
Ww_pi g 4.8741 12.1845 56.9315 88.6604 108.376 242.705 mean wet weight of adults
R 1/d 8.57893e-05 0.000202741 0.000854441 0.00119077 0.00147051 0.00267474 mean reproduction rate of adults
J_X g/d 0.00744693 0.0179423 0.0856687 0.111814 0.16858 0.262326 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 0.103012 0.0139489 0.156504 0.0209059 yield of living structure on food
Y_VX_d mol/mol 0.00863763 0.0176823 0.000156559 0.0305721 4.37139e-05 0.040919 yield of dead structure on food
Y_EX mol/mol 0 0 0.0346644 0.00469391 0.0799281 0.0106768 yield of living reserve on food
Y_EX_d mol/mol 0.00102591 0.00286994 5.26832e-05 0.0102877 2.2325e-05 0.0208977 yield of dead reserve on food
Y_CX mol/mol 0.715781 0.706934 0.611601 0.675287 0.531478 0.647746 yield of CO2 on food
Y_HX mol/mol 0.761053 0.751646 0.650283 0.717997 0.565093 0.688714 yield of H2O on food
Y_OX mol/mol -0.908492 -0.897263 -0.776262 -0.857095 -0.674568 -0.822139 yield of O2 on food
Y_NX mol/mol 0.16518 0.163139 0.141139 0.155835 0.122649 0.14948 yield of N-waste on food
mu_TX J/mol 459556 454119 394934 434395 344268 416927 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