Marcusenius pongolensis: Population traits

at T = 26.3 °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: 2025/05/19
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.401457 0.422855 0.711428 0.711428 1 1 scaled functional response
r 1/d 0 0 0.0103201 0.00150649 0.0162079 0.00225234 spec pop growth rate
t2 d NaN NaN 67.1647 460.108 42.766 307.745 population doubling time
a_b d 14.9768 14.8458 13.6206 13.6206 12.9148 12.9148 age at birth
t_j d 46.3254 44.0629 27.7566 27.7566 21.3075 21.3075 time since birth at metam
t_p d 1841.5 1334.17 469.639 469.639 322.102 322.102 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 - 0.999993 0.526623 0.999995 0.388227 0.999996 0.308961 survival probability at metam
S_p - 0.999973 0.149073 0.99999 0.145419 0.999993 0.144018 survival probability at puberty
theta_0b - 0.0048377 0.279737 0.131035 0.432778 0.188751 0.494664 frac of ind that is embryo
theta_bj - 0.00484511 0.206804 0.113966 0.274873 0.153225 0.283728 frac of ind between b and j
theta_jp - 0.0101414 0.164939 0.102501 0.106851 0.0836932 0.0660101 frac of ind between j and p
theta_pi - 0.980176 0.34852 0.652498 0.185499 0.574332 0.155598 frac of ind that is adult
L_bi cm 1.4169 0.567305 0.553134 0.337477 0.500434 0.316941 mean structural length of post-natals
L2_bi cm^2 2.13162 0.663874 0.460197 0.296846 0.386888 0.272577 mean squared structural length of post-natals
L3_bi cm^3 3.28576 0.985512 0.500002 0.493345 0.406709 0.506927 mean cubed structural length of post-natals
Ww_bi g 4.07633 1.23527 0.713192 0.703696 0.650461 0.810741 mean wet weight of post-natals
L_pi cm 1.43591 1.00456 0.679636 0.707602 0.636038 0.674595 mean structural length of adults
L2_pi cm^2 2.16374 1.34474 0.602734 0.854944 0.533895 0.827455 mean squared structural length of adults
L3_pi cm^3 3.33591 2.03212 0.664018 1.49968 0.572169 1.6366 mean cubed structural length of adults
Ww_pi g 4.13855 2.54712 0.94714 2.13911 0.915084 2.61746 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.0482567 0.0157597 0.018569 0.0118204 0.0219806 0.0152723 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 0.277887 0.0628757 0.299897 0.074761 yield of living structure on food
Y_VX_d mol/mol 0.0289137 0.0695013 0.000147106 0.132753 5.41461e-05 0.151718 yield of dead structure on food
Y_EX mol/mol 0 0 0.118485 0.0268088 0.179736 0.0448062 yield of living reserve on food
Y_EX_d mol/mol 0.00695673 0.0176136 6.27226e-05 0.0566029 3.24512e-05 0.0909285 yield of dead reserve on food
Y_CX mol/mol 0.854755 0.80351 0.494044 0.611585 0.410905 0.528411 yield of CO2 on food
Y_HX mol/mol 0.614948 0.578081 0.355437 0.440001 0.295624 0.380163 yield of H2O on food
Y_OX mol/mol -0.929546 -0.873817 -0.537273 -0.665098 -0.44686 -0.574647 yield of O2 on food
Y_NX mol/mol 0.128213 0.120527 0.0741066 0.0917377 0.0616358 0.0792617 yield of N-waste on food
mu_TX J/mol 454217 428062 268282 328809 223652 284606 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