Physa fontinalis: Population traits

at T = 18 °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 - 0.396755 NaN 0.698377 NaN 1 1 scaled functional response
r 1/d 0 0 0.0145072 NaN 0.0240381 NaN spec pop growth rate
t2 d NaN NaN 47.7795 NaN 28.8353 NaN population doubling time
a_b d 5.83701 NaN 5.30919 NaN 5.0066 NaN age at birth
t_j d 16.4351 NaN 9.62414 NaN 7.10253 NaN time since birth at metam
t_p d 183.691 NaN 93.5221 NaN 65.9878 NaN time since birth at puberty
S_b - 0.999613 NaN 0.999701 NaN 0.999744 NaN survival probability at birth
S_j - 0.997732 NaN 0.998364 NaN 0.998674 NaN survival probability at metam
S_p - 0.991056 NaN 0.996682 NaN 0.998048 NaN survival probability at puberty
theta_0b - 0.0312061 NaN 0.0832142 NaN 0.11819 NaN frac of ind that is embryo
theta_bj - 0.0312314 NaN 0.077082 NaN 0.104826 NaN frac of ind between b and j
theta_jp - 0.0564711 NaN 0.0583264 NaN 0.0402361 NaN frac of ind between j and p
theta_pi - 0.881091 NaN 0.781377 NaN 0.736747 NaN frac of ind that is adult
L_bi cm 0.115239 NaN 0.12 NaN 0.122511 NaN mean structural length of post-natals
L2_bi cm^2 0.0154604 NaN 0.0191035 NaN 0.0211186 NaN mean squared structural length of post-natals
L3_bi cm^3 0.0022762 NaN 0.0036579 NaN 0.00459891 NaN mean cubed structural length of post-natals
Ww_bi g 0.00260035 NaN 0.00457483 NaN 0.00624961 NaN mean wet weight of post-natals
L_pi cm 0.122957 NaN 0.134204 NaN 0.139113 NaN mean structural length of adults
L2_pi cm^2 0.0168559 NaN 0.0221595 NaN 0.0249851 NaN mean squared structural length of adults
L3_pi cm^3 0.00249721 NaN 0.00428182 NaN 0.00549291 NaN mean cubed structural length of adults
Ww_pi g 0.00285283 NaN 0.00535515 NaN 0.00746451 NaN mean wet weight of adults
R 1/d 0.013829 NaN 0.0326011 NaN 0.0479795 NaN mean reproduction rate of adults
J_X g/d 0.000111627 NaN 0.000247591 NaN 0.000394752 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 0.214329 NaN 0.280047 NaN yield of living structure on food
Y_VX_d mol/mol 0.21642 NaN 0.0813549 NaN 0.0437478 NaN yield of dead structure on food
Y_EX mol/mol 0 NaN 0.0537263 NaN 0.100519 NaN yield of living reserve on food
Y_EX_d mol/mol 0.0308201 NaN 0.0203934 NaN 0.0157026 NaN yield of dead reserve on food
Y_CX mol/mol 0.643385 NaN 0.520821 NaN 0.450609 NaN yield of CO2 on food
Y_HX mol/mol 0.464667 NaN 0.376149 NaN 0.32544 NaN yield of H2O on food
Y_OX mol/mol -0.699681 NaN -0.566393 NaN -0.490037 NaN yield of O2 on food
Y_NX mol/mol 0.0965078 NaN 0.0781232 NaN 0.0675914 NaN yield of N-waste on food
mu_TX J/mol 347339 NaN 283892 NaN 246681 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