Pholas dactylus: 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_minf f_max date: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.406599 0.406599 0.703299 0.703299 1 1 scaled functional response
r 1/d 0 0 0.00846447 0.00190424 0.0119568 0.00262233 spec pop growth rate
t2 d NaN NaN 81.889 364.001 57.9709 264.325 population doubling time
a_b d 2.65273 2.65273 2.44251 2.44251 2.33032 2.33032 age at birth
t_j d 0.00148987 0.00148987 0.00101767 0.00101767 0.000825997 0.000825997 time since birth at metam
t_p d 4538.99 4538.99 1299.86 1299.86 921.015 921.015 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.999421 1 0.99942 1 0.99942 survival probability at metam
S_p - 1 0.55417 1 0.46672 1 0.4186 survival probability at puberty
theta_0b - 0.000394142 0.241225 0.0203604 0.322579 0.0273456 0.361126 frac of ind that is embryo
theta_bj - 2.22543e-07 0.000136162 8.43883e-06 0.000134745 9.6063e-06 0.000128222 frac of ind between b and j
theta_jp - 0.000396019 0.180353 0.0200379 0.220369 0.0267179 0.233322 frac of ind between j and p
theta_pi - 0.99921 0.578286 0.959593 0.456917 0.945927 0.405424 frac of ind that is adult
L_bi cm 0.844834 0.0836096 0.165581 0.0343147 0.150664 0.033039 mean structural length of post-natals
L2_bi cm^2 0.763402 0.048342 0.0480881 0.00616046 0.0408424 0.00556637 mean squared structural length of post-natals
L3_bi cm^3 0.707281 0.0408293 0.0192863 0.00331546 0.0157092 0.00303725 mean cubed structural length of post-natals
Ww_bi g 1.01866 0.0588043 0.0339729 0.00584018 0.0327183 0.00632585 mean wet weight of post-natals
L_pi cm 0.845165 0.106911 0.16884 0.0463765 0.154642 0.0465585 mean structural length of adults
L2_pi cm^2 0.763705 0.0634049 0.0490907 0.009091 0.0419937 0.00871813 mean squared structural length of adults
L3_pi cm^3 0.707561 0.0535723 0.0196892 0.00491506 0.016153 0.00478563 mean cubed structural length of adults
Ww_pi g 1.01906 0.0771573 0.0346826 0.00865788 0.0336427 0.0099673 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.00532708 0.000337334 0.000580427 7.43572e-05 0.000700941 9.55305e-05 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 0.281256 0.0849069 0.26797 0.083373 yield of living structure on food
Y_VX_d mol/mol 0.0262572 0.0622186 3.69089e-05 0.168035 1.59433e-05 0.164643 yield of dead structure on food
Y_EX mol/mol 0 0 0.214177 0.0646567 0.290146 0.0902726 yield of living reserve on food
Y_EX_d mol/mol 0.0115596 0.0273916 2.81062e-05 0.127959 1.72627e-05 0.178268 yield of dead reserve on food
Y_CX mol/mol 0.852808 0.801015 0.395127 0.445067 0.332475 0.374068 yield of CO2 on food
Y_HX mol/mol 0.61876 0.581181 0.286686 0.322921 0.241229 0.271407 yield of H2O on food
Y_OX mol/mol -0.927429 -0.871104 -0.4297 -0.48401 -0.361567 -0.406799 yield of O2 on food
Y_NX mol/mol 0.127921 0.120152 0.059269 0.06676 0.0498713 0.0561103 yield of N-waste on food
mu_TX J/mol 453014 426325 214041 240090 178917 200795 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