Radix natalensis: 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: 2023/03/16
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.465907 NaN 0.732954 NaN 1 1 scaled functional response
r 1/d 0 0 0.0437327 NaN 0.0700952 NaN spec pop growth rate
t2 d NaN NaN 15.8496 NaN 9.88865 NaN population doubling time
a_b d 6.81721 NaN 6.33858 NaN 6.04429 NaN age at birth
t_j d 113.028 NaN 53.4549 NaN 37.4474 NaN time since birth at metam
t_p d 113.116 NaN 53.4933 NaN 37.4737 NaN time since birth at puberty
S_b - 0.996754 NaN 0.997375 NaN 0.99771 NaN survival probability at birth
S_j - 0.97733 NaN 0.983696 NaN 0.986868 NaN survival probability at metam
S_p - 0.115806 NaN 0.735169 NaN 0.876604 NaN survival probability at puberty
theta_0b - 0.0994905 NaN 0.262794 NaN 0.355442 NaN frac of ind that is embryo
theta_bj - 0.0985744 NaN 0.197836 NaN 0.231414 NaN frac of ind between b and j
theta_jp - 0.757145 NaN 0.493842 NaN 0.37428 NaN frac of ind between j and p
theta_pi - 0.0447905 NaN 0.0455281 NaN 0.038864 NaN frac of ind that is adult
L_bi cm 0.0831715 NaN 0.0916142 NaN 0.0945309 NaN mean structural length of post-natals
L2_bi cm^2 0.00965584 NaN 0.0143328 NaN 0.0164809 NaN mean squared structural length of post-natals
L3_bi cm^3 0.00154253 NaN 0.00360822 NaN 0.0049664 NaN mean cubed structural length of post-natals
Ww_bi g 0.00194069 NaN 0.00507339 NaN 0.00771783 NaN mean wet weight of post-natals
L_pi cm 0.250547 NaN 0.3395 NaN 0.380139 NaN mean structural length of adults
L2_pi cm^2 0.0634738 NaN 0.120052 NaN 0.154022 NaN mean squared structural length of adults
L3_pi cm^3 0.0162582 NaN 0.0442086 NaN 0.0666087 NaN mean cubed structural length of adults
Ww_pi g 0.0204547 NaN 0.0621601 NaN 0.103511 NaN mean wet weight of adults
R 1/d 0.248492 NaN 0.747088 NaN 1.18215 NaN mean reproduction rate of adults
J_X g/d 0.000320058 NaN 0.000957148 NaN 0.00161179 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 NaN 0.164862 NaN 0.215983 NaN yield of living structure on food
Y_VX_d mol/mol 0.159943 NaN 0.0553866 NaN 0.0302272 NaN yield of dead structure on food
Y_EX mol/mol 0 NaN 0.0669444 NaN 0.119657 NaN yield of living reserve on food
Y_EX_d mol/mol 0.041284 NaN 0.0224904 NaN 0.0167462 NaN yield of dead reserve on food
Y_CX mol/mol 0.689398 NaN 0.580941 NaN 0.508012 NaN yield of CO2 on food
Y_HX mol/mol 0.497899 NaN 0.419569 NaN 0.366897 NaN yield of H2O on food
Y_OX mol/mol -0.749721 NaN -0.631774 NaN -0.552463 NaN yield of O2 on food
Y_NX mol/mol 0.10341 NaN 0.0871412 NaN 0.0762017 NaN yield of N-waste on food
mu_TX J/mol 369822 NaN 313186 NaN 274373 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