Carcinus maenas: 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_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.278988 0.278988 0.518304 0.518304 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.0288891 0.0288891 0.000537393 0.000537393 spec pop growth rate
t2 d NaN NaN NaN NaN 23.9934 23.9934 1289.83 1289.83 population doubling time
a_b d 10.0435 9.77872 9.05135 8.81522 8.1373 7.9421 8.1373 7.9421 age at birth
t_j d 175.978 147.604 92.8518 80.1815 52.8409 46.8742 52.8409 46.8742 time since birth at metam
t_p d 2396.36 1372.88 555.743 450.776 265.461 230.502 265.461 230.502 time since birth at puberty
S_b - 0.999999 1 1 1 1 1 1 1 survival probability at birth
S_j - 0.999996 0.999997 0.510869 0.468088 0.999998 0.999999 0.343648 0.308399 survival probability at metam
S_p - 0.999824 0.999897 0.001018 0.00100314 0.999986 0.99999 0.000972046 0.0009655 survival probability at puberty
theta_0b - 0.00373905 0.00349568 0.400356 0.430168 0.209352 0.204891 0.517177 0.541126 frac of ind that is embryo
theta_bj - 0.00374685 0.00350232 0.291973 0.301815 0.165636 0.163016 0.316835 0.317199 frac of ind between b and j
theta_jp - 0.0618985 0.0493608 0.304341 0.265031 0.453217 0.426827 0.164331 0.140145 frac of ind between j and p
theta_pi - 0.930616 0.943641 0.00333002 0.00298666 0.171795 0.205267 0.00165656 0.0015291 frac of ind that is adult
L_bi cm 1.068 1.28001 0.0484448 0.0488027 0.209 0.248766 0.0456684 0.0457544 mean structural length of post-natals
L2_bi cm^2 1.24648 1.77599 0.0164119 0.0194857 0.131637 0.18378 0.0150487 0.0169304 mean squared structural length of post-natals
L3_bi cm^3 1.48695 2.51506 0.0307925 0.0439782 0.134729 0.214626 0.0481902 0.0641302 mean cubed structural length of post-natals
Ww_bi g 1.67096 2.87999 0.0378717 0.0558335 0.194491 0.326253 0.0695657 0.0974843 mean wet weight of post-natals
L_pi cm 1.13593 1.34579 1.36772 1.50925 0.666136 0.719495 1.36816 1.42424 mean structural length of adults
L2_pi cm^2 1.33332 1.87461 2.58591 3.32548 0.569023 0.680586 3.78601 4.46166 mean squared structural length of adults
L3_pi cm^3 1.59165 2.65579 5.5188 8.36296 0.613915 0.826038 14.0031 19.2012 mean cubed structural length of adults
Ww_pi g 1.78861 3.04115 6.78759 10.6174 0.886227 1.25566 20.2144 29.1878 mean wet weight of adults
R 1/d 0 5.41179 25.7743 43.9204 0.808977 4.60602 79.9041 108.309 mean reproduction rate of adults
J_X g/d 0.0268873 0.0453991 0.000615792 0.000875159 0.0104072 0.0172009 0.00109495 0.00146566 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.37399 0.360465 0.0236513 0.0235138 yield of living structure on food
Y_VX_d mol/mol 0.0268275 0.0254015 0.0766056 0.0711543 2.20406e-05 1.81177e-05 0.0920392 0.0874847 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.16589 0.187479 0.010491 0.0122296 yield of living reserve on food
Y_EX_d mol/mol 0.00331989 0.00368581 0.0176118 0.0191811 9.77649e-06 9.42304e-06 0.0408256 0.0455009 yield of dead reserve on food
Y_CX mol/mol 0.860478 0.861538 0.796408 0.80029 0.350714 0.342653 0.723618 0.721896 yield of CO2 on food
Y_HX mol/mol 0.6205 0.621264 0.574298 0.577098 0.252903 0.247091 0.521809 0.520567 yield of H2O on food
Y_OX mol/mol -0.935769 -0.936922 -0.866093 -0.870315 -0.381401 -0.372636 -0.786934 -0.785062 yield of O2 on food
Y_NX mol/mol 0.129072 0.129231 0.119461 0.120043 0.052607 0.051398 0.108543 0.108284 yield of N-waste on food
mu_TX J/mol 457260 457772 424511 426373 194249 189140 386431 385249 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female differ.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer