Physella acuta: 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 - 0.251887 0.695168 0.847584 0.847584 1 1 scaled functional response
r 1/d 0 0 0.0867884 0.00185731 0.100827 0.00333152 spec pop growth rate
t2 d NaN NaN 7.98663 373.2 6.87461 208.058 population doubling time
a_b d 7.16754 6.0675 5.8823 5.8823 5.73681 5.73681 age at birth
t_j d 136.048 28.0392 23.1219 23.1219 19.9696 19.9696 time since birth at metam
t_p d 173.367 34.0351 28.0006 28.0006 24.1472 24.1472 time since birth at puberty
S_b - 0.999363 0.999604 0.999637 0.999637 0.999661 0.999661 survival probability at birth
S_j - 0.99552 0.464711 0.997993 0.401128 0.998192 0.353213 survival probability at metam
S_p - 0.410533 0.028802 0.989232 0.0274999 0.992091 0.0266697 survival probability at puberty
theta_0b - 0.0539518 0.418142 0.401009 0.467671 0.440104 0.504117 frac of ind that is embryo
theta_bj - 0.0539313 0.292316 0.240588 0.303733 0.246709 0.308064 frac of ind between b and j
theta_jp - 0.722719 0.237689 0.279128 0.18638 0.239247 0.151541 frac of ind between j and p
theta_pi - 0.169397 0.0518529 0.0792748 0.0422159 0.07394 0.0362776 frac of ind that is adult
L_bi cm 0.0568188 0.06172 0.0676308 0.0615351 0.0684715 0.0613759 mean structural length of post-natals
L2_bi cm^2 0.00363078 0.00697879 0.00660559 0.00742768 0.00687775 0.00778457 mean squared structural length of post-natals
L3_bi cm^3 0.000258343 0.0014495 0.000938028 0.00180461 0.00102305 0.0021413 mean cubed structural length of post-natals
Ww_bi g 0.000298132 0.00206564 0.00142417 0.00273987 0.0016486 0.00345063 mean wet weight of post-natals
L_pi cm 0.0918117 0.218536 0.164932 0.236261 0.169237 0.248831 mean structural length of adults
L2_pi cm^2 0.00847835 0.0542845 0.0294416 0.0662073 0.0312405 0.0763004 mean squared structural length of adults
L3_pi cm^3 0.000787391 0.0149104 0.00572709 0.0211978 0.00634648 0.0275537 mean cubed structural length of adults
Ww_pi g 0.000908664 0.0212484 0.00869524 0.0321839 0.0102271 0.0444017 mean wet weight of adults
R 1/d 0.068342 1.3806 0.78922 1.93841 0.910954 2.47638 mean reproduction rate of adults
J_X g/d 3.41804e-05 0.000250318 0.00028845 0.000332202 0.000359762 0.000417155 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 0.282232 0.0100894 0.28672 0.0171011 yield of living structure on food
Y_VX_d mol/mol 0.109839 0.186927 0.00417889 0.183431 0.0029941 0.179692 yield of dead structure on food
Y_EX mol/mol 0 0 0.146271 0.00522897 0.175319 0.0104566 yield of living reserve on food
Y_EX_d mol/mol 0.0169174 0.0794567 0.00216577 0.095066 0.00183078 0.109875 yield of dead reserve on food
Y_CX mol/mol 0.763868 0.624242 0.455777 0.59681 0.423761 0.5735 yield of CO2 on food
Y_HX mol/mol 0.551683 0.450841 0.329172 0.431029 0.30605 0.414194 yield of H2O on food
Y_OX mol/mol -0.830707 -0.678863 -0.495657 -0.64903 -0.46084 -0.623681 yield of O2 on food
Y_NX mol/mol 0.11458 0.0936362 0.0683665 0.0895214 0.0635642 0.086025 yield of N-waste on food
mu_TX J/mol 408276 335335 247654 320578 230211 307921 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