Spirula spirula: 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: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.134062 0.134062 0.567031 0.567031 1 1 scaled functional response
r 1/d 0 0 0.00947116 NaN 0.0108699 NaN spec pop growth rate
t2 d NaN NaN 73.185 NaN 63.7674 NaN population doubling time
a_b d 19.6291 19.6291 18.0765 NaN 17.8301 NaN age at birth
t_j d 0.00143001 0.00143001 0.000997377 NaN 0.000941565 NaN time since birth at metam
t_p d 2658.9 2658.9 266.147 NaN 226.468 NaN time since birth at puberty
S_b - 0.999849 0.999849 0.999881 NaN 0.999886 NaN survival probability at birth
S_j - 0.999849 0.999722 0.999881 NaN 0.999886 NaN survival probability at metam
S_p - 0.999125 0.425233 0.999421 NaN 0.999457 NaN survival probability at puberty
theta_0b - 0.0490973 0.290791 0.162319 NaN 0.179713 NaN frac of ind that is embryo
theta_bj - 3.57869e-06 2.11943e-05 8.21331e-06 NaN 8.60232e-06 NaN frac of ind between b and j
theta_jp - 0.0491045 0.187472 0.136779 NaN 0.148052 NaN frac of ind between j and p
theta_pi - 0.901795 0.521716 0.700893 NaN 0.672226 NaN frac of ind that is adult
L_bi cm 0.113853 0.0852396 0.158672 NaN 0.167343 NaN mean structural length of post-natals
L2_bi cm^2 0.0138506 0.00866674 0.0346155 NaN 0.0410251 NaN mean squared structural length of post-natals
L3_bi cm^3 0.00175214 0.000986733 0.0092895 NaN 0.0130349 NaN mean cubed structural length of post-natals
Ww_bi g 0.00624128 0.00351483 0.109957 NaN 0.262149 NaN mean wet weight of post-natals
L_pi cm 0.117761 0.101198 0.180315 NaN 0.193451 NaN mean structural length of adults
L2_pi cm^2 0.014507 0.0111729 0.0409124 NaN 0.0495189 NaN mean squared structural length of adults
L3_pi cm^3 0.00184332 0.00131574 0.0110793 NaN 0.0158778 NaN mean cubed structural length of adults
Ww_pi g 0.00656607 0.00468677 0.131141 NaN 0.319322 NaN mean wet weight of adults
R 1/d 0 0 0.366245 NaN 0.343892 NaN mean reproduction rate of adults
J_X g/d 0.000270722 0.000169399 0.00286175 NaN 0.00598142 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 0 0.0307442 NaN 0.0236882 NaN yield of living structure on food
Y_VX_d mol/mol 0.0259567 0.0468423 0.00468 NaN 0.00275689 NaN yield of dead structure on food
Y_EX mol/mol 0 0 0.333165 NaN 0.452711 NaN yield of living reserve on food
Y_EX_d mol/mol 0.0665033 0.120014 0.0507157 NaN 0.0526877 NaN yield of dead reserve on food
Y_CX mol/mol 0.798165 0.723769 0.47132 NaN 0.358781 NaN yield of CO2 on food
Y_HX mol/mol 0.573792 0.520309 0.338827 NaN 0.257924 NaN yield of H2O on food
Y_OX mol/mol -0.868004 -0.787098 -0.51256 NaN -0.390175 NaN yield of O2 on food
Y_NX mol/mol 0.119725 0.108565 0.070698 NaN 0.0538172 NaN yield of N-waste on food
mu_TX J/mol 422945 383071 243653 NaN 181308 NaN 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