Psammechinus miliaris: Population traits

at T = 10 °C with background hazards for embryo, larva, juv, adult: 0, 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 abj f_minf f_max date: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.123749 0.245344 0.622672 0.622672 1 1 scaled functional response
r 1/d 0 0 0.0180279 0.000434689 0.0287327 0.000215545 spec pop growth rate
t2 d NaN NaN 38.4485 1594.58 24.124 3215.8 population doubling time
a_b d 6.74775 6.0883 5.23594 5.23594 4.8355 4.8355 age at birth
t_j d 449.31 214.604 85.4014 85.4014 55.288 55.288 time since birth at metam
t_p d 7878.45 1348.81 457.051 457.051 287.086 287.086 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999998 0.826824 0.999999 0.661783 0.999999 0.554598 survival probability at metam
S_p - 0.998969 0.00122706 0.999966 0.0011906 0.999986 0.00118223 survival probability at puberty
theta_0b - 0.00132764 0.158391 0.0897163 0.292124 0.129284 0.369891 frac of ind that is embryo
theta_bj - 0.00134136 0.145242 0.081996 0.239915 0.112948 0.280348 frac of ind between b and j
theta_jp - 0.0879352 0.692417 0.633075 0.465484 0.579958 0.347529 frac of ind between j and p
theta_pi - 0.909396 0.00394963 0.195213 0.00247653 0.17781 0.002232 frac of ind that is adult
L_bi cm 0.349503 0.0127393 0.0538424 0.0122247 0.0519909 0.0122612 mean structural length of post-natals
L2_bi cm^2 0.143006 0.00103233 0.00886218 0.000923407 0.00842085 0.000955493 mean squared structural length of post-natals
L3_bi cm^3 0.0612381 0.000658791 0.002471 0.00102651 0.00236386 0.0011155 mean cubed structural length of post-natals
Ww_bi g 0.0625085 0.000685887 0.00272895 0.00113366 0.00276015 0.00130252 mean wet weight of post-natals
L_pi cm 0.381066 0.323588 0.171868 0.288617 0.170956 0.289618 mean structural length of adults
L2_pi cm^2 0.156939 0.187174 0.0387829 0.220089 0.0385665 0.226209 mean squared structural length of adults
L3_pi cm^3 0.0672449 0.139755 0.0114138 0.292579 0.0114617 0.314085 mean cubed structural length of adults
Ww_pi g 0.06864 0.145504 0.0126053 0.323121 0.0133833 0.366741 mean wet weight of adults
R 1/d 0 7.95238 0 45.7792 2.60359 75.6689 mean reproduction rate of adults
J_X g/d 0.000266795 3.46239e-06 8.34164e-05 7.82389e-06 0.000127398 1.30858e-05 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 0.534032 0.0570318 0.533131 0.0183742 yield of living structure on food
Y_VX_d mol/mol 0.075339 0.165556 6.50007e-05 0.215378 2.43788e-05 0.267385 yield of dead structure on food
Y_EX mol/mol 0 0 0.055747 0.0059535 0.0893778 0.00308037 yield of living reserve on food
Y_EX_d mol/mol 0.001563 0.0068095 6.78535e-06 0.0224831 4.08702e-06 0.0448262 yield of dead reserve on food
Y_CX mol/mol 0.813723 0.718259 0.300775 0.589778 0.268088 0.556959 yield of CO2 on food
Y_HX mol/mol 0.590401 0.521137 0.218229 0.427917 0.194512 0.404105 yield of H2O on food
Y_OX mol/mol -0.884924 -0.781107 -0.327092 -0.641384 -0.291545 -0.605693 yield of O2 on food
Y_NX mol/mol 0.122058 0.107739 0.0451162 0.0884668 0.0402131 0.0835439 yield of N-waste on food
mu_TX J/mol 433971 385977 174787 320655 156762 303272 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