Asterias rubens: Population traits

at T = 15 °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: 2025/05/21
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.030668 0.030668 0.515334 0.515334 1 1 scaled functional response
r 1/d 0 0 0.0815679 0.0104809 0.0831576 0.00834227 spec pop growth rate
t2 d NaN NaN 8.49779 66.1342 8.33534 83.0885 population doubling time
a_b d 5.01255 5.01255 4.64046 4.64046 4.45865 4.45865 age at birth
t_j d 2.65379 2.65379 1.8241 1.8241 1.86792 1.86792 time since birth at metam
t_p d 319.484 319.484 51.8826 51.8826 49.2206 49.2206 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.349079 1 0.316513 1 0.289073 survival probability at metam
S_p - 1 0.206824 1 0.125233 1 0.116871 survival probability at puberty
theta_0b - 0.00544216 0.216013 0.315368 0.665972 0.316699 0.679722 frac of ind that is embryo
theta_bj - 0.00288509 0.0708257 0.0946492 0.150406 0.0983058 0.153144 frac of ind between b and j
theta_jp - 0.00256434 0.0272501 0.121093 0.0759401 0.11338 0.0668844 frac of ind between j and p
theta_pi - 0.989108 0.685912 0.46889 0.107682 0.471615 0.100249 frac of ind that is adult
L_bi cm 0.111937 0.0960163 0.0802038 0.0521673 0.0820131 0.0525477 mean structural length of post-natals
L2_bi cm^2 0.0126734 0.0103747 0.0102993 0.00835717 0.0110502 0.0101615 mean squared structural length of post-natals
L3_bi cm^3 0.00144198 0.00116076 0.00188417 0.00354047 0.00215847 0.00600434 mean cubed structural length of post-natals
Ww_bi g 0.00761094 0.0061266 0.137333 0.258057 0.30326 0.843596 mean wet weight of post-natals
L_pi cm 0.112421 0.106595 0.104313 0.110523 0.106667 0.116151 mean structural length of adults
L2_pi cm^2 0.01274 0.0117864 0.0146608 0.0245898 0.0156598 0.0311615 mean squared structural length of adults
L3_pi cm^3 0.00144984 0.00132504 0.00273937 0.0109455 0.00311664 0.0191477 mean cubed structural length of adults
Ww_pi g 0.00765243 0.0069937 0.199667 0.797791 0.437881 2.6902 mean wet weight of adults
R 1/d 3.25109 2.86306 0.742257 2.97317 0.50366 3.04735 mean reproduction rate of adults
J_X g/d 0.00114861 0.000939746 0.0161908 0.0130955 0.0347435 0.0318607 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.21875 0.21875 0.21875 0.21875 0.21875 0.21875 yield of faeces on food
Y_VX mol/mol 0 0 0.00949229 0.0028336 0.00516625 0.00157215 yield of living structure on food
Y_VX_d mol/mol 0.00144767 0.00388362 1.34456e-07 0.00553844 6.92708e-08 0.00311081 yield of dead structure on food
Y_EX mol/mol 0 0 0.68238 0.203701 0.720679 0.219312 yield of living reserve on food
Y_EX_d mol/mol 0.00619332 0.0166146 9.66574e-06 0.398147 9.66312e-06 0.433951 yield of dead reserve on food
Y_CX mol/mol 0.773609 0.760752 0.0893675 0.17103 0.0553948 0.123304 yield of CO2 on food
Y_HX mol/mol 0.561296 0.551968 0.0648411 0.124092 0.040192 0.0894639 yield of H2O on food
Y_OX mol/mol -0.8413 -0.827318 -0.0971871 -0.185995 -0.0602418 -0.134093 yield of O2 on food
Y_NX mol/mol 0.116041 0.114113 0.0134051 0.0256545 0.00830922 0.0184956 yield of N-waste on food
mu_TX J/mol 415870 408920 39939.2 84797.5 21037.9 58363.9 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