Helix pomatia: 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: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.564468 0.633695 0.816847 0.816847 1 1 scaled functional response
r 1/d 0 0 0.00285071 0.000254894 0.00394172 0.000384202 spec pop growth rate
t2 d NaN NaN 243.149 2719.36 175.849 1804.12 population doubling time
a_b d 28.3324 27.807 26.7197 26.7197 25.9211 25.9211 age at birth
t_j d 20.6947 18.7754 15.3567 15.3567 13.2485 13.2485 time since birth at metam
t_p d 4331.33 1724.49 996.019 996.019 753.815 753.815 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.539118 0.999999 0.534542 1 0.5318 survival probability at metam
S_p - 0.999999 0.446887 0.999999 0.401959 0.999999 0.369564 survival probability at puberty
theta_0b - 0.0034803 0.172694 0.0733054 0.287369 0.0970792 0.341463 frac of ind that is embryo
theta_bj - 0.00254457 0.0870617 0.039701 0.122197 0.0459457 0.128545 frac of ind between b and j
theta_jp - 0.000939106 0.0275498 0.0282772 0.0561765 0.0417593 0.0731072 frac of ind between j and p
theta_pi - 0.993036 0.712695 0.858716 0.534258 0.815216 0.456885 frac of ind that is adult
L_bi cm 1.64167 1.23664 1.00644 0.980908 0.965098 0.903386 mean structural length of post-natals
L2_bi cm^2 2.77302 2.07454 1.33221 1.69274 1.27531 1.63714 mean squared structural length of post-natals
L3_bi cm^3 4.74194 3.81823 2.07995 3.6353 2.06027 4.0146 mean cubed structural length of post-natals
Ww_bi g 6.3974 5.3147 3.13075 5.47186 3.33449 6.49753 mean wet weight of post-natals
L_pi cm 1.6466 1.39795 1.06669 1.22856 1.04189 1.19455 mean structural length of adults
L2_pi cm^2 2.78256 2.39932 1.43286 2.23859 1.40563 2.33315 mean squared structural length of adults
L3_pi cm^3 4.75853 4.43016 2.2434 4.8443 2.28014 5.77984 mean cubed structural length of adults
Ww_pi g 6.41978 6.16646 3.37677 7.29166 3.69036 9.35454 mean wet weight of adults
R 1/d 0 0 0 0.000362564 0 0.00963138 mean reproduction rate of adults
J_X g/d 0.190938 0.160582 0.133317 0.169333 0.1565 0.200817 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.546875 0.546875 0.546875 0.546875 0.546875 0.546875 yield of faeces on food
Y_VX mol/mol 0 0 0.0444755 0.00547214 0.0518914 0.00768072 yield of living structure on food
Y_VX_d mol/mol 0.00350803 0.00885832 3.03488e-05 0.0134664 1.50074e-05 0.0163627 yield of dead structure on food
Y_EX mol/mol 0 0 0.0224691 0.00276453 0.0320937 0.00475035 yield of living reserve on food
Y_EX_d mol/mol 0.00122469 0.00347181 1.53323e-05 0.00680327 9.28172e-06 0.01012 yield of dead reserve on food
Y_CX mol/mol 0.448392 0.440795 0.386135 0.424619 0.369116 0.414211 yield of CO2 on food
Y_HX mol/mol 0.323839 0.318352 0.278875 0.306669 0.266584 0.299153 yield of H2O on food
Y_OX mol/mol -0.487627 -0.479364 -0.419922 -0.461773 -0.401413 -0.450455 yield of O2 on food
Y_NX mol/mol 0.0672588 0.0661192 0.0579202 0.0636928 0.0553674 0.0621317 yield of N-waste on food
mu_TX J/mol 260072 256161 227881 247768 218890 242300 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