Discus perspectivus: Population traits

at T = 21.5 °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: 2024/11/08
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.376155 0.41346 0.70673 0.70673 1 1 scaled functional response
r 1/d 0 0 0.0179081 0.00315131 0.0242676 0.00395402 spec pop growth rate
t2 d NaN NaN 38.7059 219.955 28.5627 175.302 population doubling time
a_b d 13.1576 13.0283 12.4279 12.4279 12.1461 12.1461 age at birth
t_j d 0.00593655 0.00566269 0.00455158 0.00455158 0.00410928 0.00410928 time since birth at metam
t_p d 1146.5 583.546 165.729 165.729 119.59 119.59 time since birth at puberty
S_b - 0.999999 0.999999 0.999999 0.999999 0.999999 0.999999 survival probability at birth
S_j - 0.999999 0.999378 0.999999 0.999288 0.999999 0.999255 survival probability at metam
S_p - 0.999995 0.493404 0.999996 0.391602 0.999997 0.349643 survival probability at puberty
theta_0b - 0.011534 0.0809819 0.199538 0.314398 0.255272 0.394047 frac of ind that is embryo
theta_bj - 5.20587e-06 3.51994e-05 6.52588e-05 0.00011289 7.42683e-05 0.000130113 frac of ind between b and j
theta_jp - 0.0115329 0.0560586 0.159692 0.1873 0.190061 0.220539 frac of ind between j and p
theta_pi - 0.976928 0.862924 0.640705 0.49819 0.554593 0.385284 frac of ind that is adult
L_bi cm 0.075094 0.0780634 0.078098 0.0862042 0.08094 0.0884665 mean structural length of post-natals
L2_bi cm^2 0.00568759 0.00630761 0.00707418 0.00925303 0.00800772 0.011081 mean squared structural length of post-natals
L3_bi cm^3 0.000432985 0.000519041 0.000712828 0.00112412 0.000923132 0.00171221 mean cubed structural length of post-natals
Ww_bi g 0.0011624 0.00148015 0.00296902 0.00468211 0.00505742 0.00938041 mean wet weight of post-natals
L_pi cm 0.0755746 0.080909 0.0881607 0.104845 0.0952626 0.117475 mean structural length of adults
L2_pi cm^2 0.00574067 0.0066404 0.00847662 0.0122192 0.0102155 0.0165894 mean squared structural length of adults
L3_pi cm^3 0.000437606 0.000550077 0.000876451 0.00152744 0.00121764 0.00265969 mean cubed structural length of adults
Ww_pi g 0.00117481 0.00156866 0.00365052 0.00636197 0.00667091 0.0145712 mean wet weight of adults
R 1/d 0.00118819 0.00872931 0.026207 0.0556937 0.0364474 0.0888549 mean reproduction rate of adults
J_X g/d 9.89793e-05 0.000120657 0.00023131 0.000302554 0.000370492 0.000512684 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 0.0551872 0.0117085 0.0604659 0.0132052 yield of living structure on food
Y_VX_d mol/mol 0.00413509 0.00910697 3.78238e-05 0.0196985 1.73672e-05 0.0225999 yield of dead structure on food
Y_EX mol/mol 0 0 0.174674 0.0370589 0.270799 0.0591403 yield of living reserve on food
Y_EX_d mol/mol 0.00696608 0.0168634 0.000119717 0.0623482 7.77798e-05 0.101215 yield of dead reserve on food
Y_CX mol/mol 0.879524 0.864655 0.660606 0.759811 0.559265 0.694465 yield of CO2 on food
Y_HX mol/mol 0.635212 0.624473 0.477104 0.548752 0.403913 0.501558 yield of H2O on food
Y_OX mol/mol -0.956482 -0.940312 -0.718409 -0.826294 -0.6082 -0.755231 yield of O2 on food
Y_NX mol/mol 0.131929 0.129698 0.0990909 0.113972 0.0838897 0.10417 yield of N-waste on food
mu_TX J/mol 466601 458672 348751 402123 293276 366402 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