Donax hanleyanus: Population traits

at T = 17 °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: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.29019 0.332706 0.666353 0.666353 1 1 scaled functional response
r 1/d 0 0 0.0109082 0.00174331 0.0168136 0.00267021 spec pop growth rate
t2 d NaN NaN 63.5434 397.604 41.2254 259.585 population doubling time
a_b d 3.04239 2.97339 2.6456 2.6456 2.47557 2.47557 age at birth
t_j d 0.839034 0.73971 0.40266 0.40266 0.291341 0.291341 time since birth at metam
t_p d 3505.32 2009.72 671.125 671.125 442.093 442.093 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.889202 1 0.888745 1 0.888601 survival probability at metam
S_p - 0.999998 0.711331 0.999999 0.598333 0.999999 0.529977 survival probability at puberty
theta_0b - 0.00117847 0.135037 0.0283409 0.22461 0.0406177 0.275816 frac of ind that is embryo
theta_bj - 0.000326674 0.0318538 0.00426055 0.0323018 0.00468893 0.03063 frac of ind between b and j
theta_jp - 0.000857866 0.0810751 0.0233931 0.138786 0.0344316 0.166554 frac of ind between j and p
theta_pi - 0.997637 0.752034 0.944005 0.604303 0.920262 0.527 frac of ind that is adult
L_bi cm 0.275838 0.0529872 0.0845435 0.0351318 0.0791985 0.0338273 mean structural length of post-natals
L2_bi cm^2 0.0870851 0.0102592 0.0119976 0.00459311 0.0107385 0.0043065 mean squared structural length of post-natals
L3_bi cm^3 0.0291043 0.00322897 0.00235941 0.00149525 0.00206957 0.00151315 mean cubed structural length of post-natals
Ww_bi g 0.0323696 0.00364431 0.00296725 0.00188046 0.00286971 0.00209816 mean wet weight of post-natals
L_pi cm 0.276154 0.0595109 0.0867259 0.0422607 0.0821235 0.0426514 mean structural length of adults
L2_pi cm^2 0.0871884 0.0117861 0.0123461 0.00586533 0.0111904 0.00587828 mean squared structural length of adults
L3_pi cm^3 0.0291389 0.00371371 0.00242849 0.00191829 0.0021575 0.0020789 mean cubed structural length of adults
Ww_pi g 0.0324081 0.00419141 0.00305414 0.0024125 0.00299163 0.00288264 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.000198827 2.68563e-05 6.29136e-05 2.40853e-05 8.45114e-05 3.38913e-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 0.409085 0.108227 0.411742 0.119217 yield of living structure on food
Y_VX_d mol/mol 0.09862 0.183084 0.000793147 0.232259 0.000307607 0.241246 yield of dead structure on food
Y_EX mol/mol 0 0 0.105391 0.0278821 0.159188 0.0460918 yield of living reserve on food
Y_EX_d mol/mol 0.0110645 0.0235503 0.000204335 0.0598358 0.000118927 0.0932707 yield of dead reserve on food
Y_CX mol/mol 0.780941 0.68399 0.375152 0.462422 0.319268 0.390799 yield of CO2 on food
Y_HX mol/mol 0.566616 0.496273 0.272194 0.335513 0.231647 0.283547 yield of H2O on food
Y_OX mol/mol -0.849273 -0.74384 -0.407978 -0.502883 -0.347204 -0.424994 yield of O2 on food
Y_NX mol/mol 0.117141 0.102599 0.0562728 0.0693632 0.0478902 0.0586199 yield of N-waste on food
mu_TX J/mol 417105 368005 209484 254012 178856 215619 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