Gasterosteus aculeatus: Population traits

at T = 20 °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: 2025/06/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.286154 0.387655 0.693827 0.693827 1 1 scaled functional response
r 1/d 0 0 0.00899473 0.000631054 0.0143324 0.000967132 spec pop growth rate
t2 d NaN NaN 77.0614 1098.4 48.3624 716.704 population doubling time
a_b d 8.54066 8.11615 7.36927 7.36927 6.95537 6.95537 age at birth
t_j d 6.16234 4.60256 2.76281 2.76281 2.07833 2.07833 time since birth at metam
t_p d 1365.35 437.209 178.032 178.032 120.944 120.944 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.750718 1 0.732048 1 0.725536 survival probability at metam
S_p - 0.999999 0.653018 1 0.533667 1 0.465847 survival probability at puberty
theta_0b - 0.00273507 0.0503419 0.0640854 0.169861 0.0948194 0.251368 frac of ind that is embryo
theta_bj - 0.00197701 0.0248563 0.0229739 0.0545883 0.026566 0.0640247 frac of ind between b and j
theta_jp - 0.000763012 0.0152777 0.0370578 0.0660257 0.0593191 0.101685 frac of ind between j and p
theta_pi - 0.994525 0.909524 0.875883 0.709525 0.819295 0.582922 frac of ind that is adult
L_bi cm 0.455343 0.540361 0.519114 0.633629 0.528256 0.641153 mean structural length of post-natals
L2_bi cm^2 0.210063 0.321403 0.337892 0.573024 0.372488 0.722943 mean squared structural length of post-natals
L3_bi cm^3 0.0975892 0.198669 0.254 0.593196 0.319479 1.01848 mean cubed structural length of post-natals
Ww_bi g 0.110856 0.235258 0.337727 0.788733 0.471262 1.50235 mean wet weight of post-natals
L_pi cm 0.456214 0.557932 0.54433 0.715954 0.567155 0.779538 mean structural length of adults
L2_pi cm^2 0.210588 0.334692 0.359475 0.66662 0.408922 0.921621 mean squared structural length of adults
L3_pi cm^3 0.0978505 0.207307 0.271168 0.693459 0.352552 1.30693 mean cubed structural length of adults
Ww_pi g 0.111153 0.245488 0.360553 0.922045 0.520047 1.92784 mean wet weight of adults
R 1/d 0.00054368 0.0136533 0.0300063 0.068352 0.0466625 0.130404 mean reproduction rate of adults
J_X g/d 0.00313142 0.00653798 0.0124058 0.0210378 0.0197696 0.0383681 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 0.18416 0.0177936 0.231613 0.0256724 yield of living structure on food
Y_VX_d mol/mol 0.0108682 0.0265002 6.15832e-05 0.0425929 2.2598e-05 0.0538547 yield of dead structure on food
Y_EX mol/mol 0 0 0.0607052 0.00586536 0.110037 0.0121968 yield of living reserve on food
Y_EX_d mol/mol 0.00147752 0.00488058 2.02998e-05 0.01404 1.07362e-05 0.025586 yield of dead reserve on food
Y_CX mol/mol 0.878279 0.859244 0.645677 0.810333 0.548942 0.773315 yield of CO2 on food
Y_HX mol/mol 0.631873 0.618179 0.464529 0.58299 0.394933 0.556357 yield of H2O on food
Y_OX mol/mol -0.955129 -0.934428 -0.702174 -0.881237 -0.596974 -0.84098 yield of O2 on food
Y_NX mol/mol 0.131742 0.128887 0.0968516 0.12155 0.0823413 0.115997 yield of N-waste on food
mu_TX J/mol 466253 456566 346990 431359 296156 411956 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