Spodoptera frugiperda: Population traits

at T = 25 °C with background hazards for embryo, larva, pupa, imago: 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 hex f_minf f_max date: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 1 1 1 1 1 1 scaled functional response
r 1/d 0 0 0.25535 NaN 0.25535 NaN spec pop growth rate
t2 d NaN NaN 2.7145 NaN 2.7145 NaN population doubling time
a_b d 2.61192 2.61192 2.61192 NaN 2.61192 NaN age at birth
t_j d 16.0712 16.0712 16.0712 NaN 16.0712 NaN time since birth at metam
t_e d 16.6713 16.6713 16.6713 NaN 16.6713 NaN time since birth at emergence
S_b - 0.881319 0.881319 0.881319 NaN 0.881319 NaN survival probability at birth
S_j - 0.146077 1.38982e-05 0.146077 NaN 0.146077 NaN survival probability at metam
S_e - 0.136596 1.2988e-05 0.136596 NaN 0.136596 NaN survival probability at emergence
theta_0b - 0.266891 0.661784 0.599532 NaN 0.599532 NaN frac of ind that is embryo
theta_bj - 0.70007 0.338208 0.399833 NaN 0.399833 NaN frac of ind between b and j
theta_je - 0.00902805 2.12853e-06 0.000216973 NaN 0.000216973 NaN frac of ind that is pupa
theta_ei - 0.0240109 5.66101e-06 0.00041817 NaN 0.00041817 NaN frac of ind that is imago
L_bi cm 0.0547632 0.0168054 0.0240537 NaN 0.0240537 NaN mean structural length of post-natals
L2_bi cm^2 0.00578218 0.000330071 0.00101083 NaN 0.00101083 NaN mean squared structural length of post-natals
L3_bi cm^3 0.000890279 9.14964e-06 8.83237e-05 NaN 8.83237e-05 NaN mean cubed structural length of post-natals
Ww_bi g 0.00176613 1.8151e-05 0.000175216 NaN 0.000175216 NaN mean wet weight of post-natals
L_ei cm 0.0750119 0.0750119 0.0750119 NaN 0.0750119 NaN mean structural length of imagos
L2_ei cm^2 0.00562678 0.00562678 0.00562678 NaN 0.00562678 NaN mean squared structural length of imagos
L3_ei cm^3 0.000422075 0.000422075 0.000422075 NaN 0.000422075 NaN mean cubed structural length of imagos
Ww_ei g 0.000837309 0.000837309 0.000837309 NaN 0.000837309 NaN mean wet weight of imagos
R 1/d 0.134754 0.134754 0.134754 NaN 0.134754 NaN mean reproduction rate of adults
J_X g/d 0.00164019 1.67496e-05 0.000159592 NaN 0.000159592 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 0 0.675325 NaN 0.675325 NaN yield of living structure on food
Y_VX_d mol/mol 0.0609655 0.375077 0.0609654 NaN 0.0609654 NaN yield of dead structure on food
Y_EX mol/mol 0 0 0.664378 NaN 0.664378 NaN yield of living reserve on food
Y_EX_d mol/mol 0.0599772 0.368997 0.0599772 NaN 0.0599772 NaN yield of dead reserve on food
Y_CX mol/mol 0.625367 0.119073 -0.463142 NaN -0.463142 NaN yield of CO2 on food
Y_HX mol/mol 0.670479 0.127662 -0.496552 NaN -0.496552 NaN yield of H2O on food
Y_OX mol/mol -0.793735 -0.151131 0.587834 NaN 0.587834 NaN yield of O2 on food
Y_NX mol/mol 0.144315 0.0274784 -0.106879 NaN -0.106879 NaN yield of N-waste on food
mu_TX J/mol 401987 80672.3 -288825 NaN -288825 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: imago deposits eggs at constant rate during lifetime as imago
  • Weights of adults do not include reproduction buffer