Gymnogeophagus lacustris: Population traits

at T = 25 °C with background hazards for embryo, juv, adult: 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 std f_min f_max date: 2025/04/28
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.466282 0.466282 0.554854 0.554854 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00536832 0.00536832 0.000860437 0.000860437 spec pop growth rate
t2 d NaN NaN NaN NaN 129.118 129.118 805.576 805.576 population doubling time
a_b d 26.2523 24.5239 25.505 23.8686 23.2602 21.9622 23.2602 21.9622 age at birth
t_p d 3765.99 1028.98 1632.65 812.739 668.792 460.824 668.792 460.824 time since birth at puberty
S_b - 0.999993 0.999996 0.999994 0.999997 0.999995 0.999997 0.999995 0.999997 survival probability at birth
S_p - 0.999964 0.999981 0.599448 0.523067 0.999976 0.999987 0.493899 0.43109 survival probability at puberty
theta_0b - 0.00783829 0.0063063 0.184876 0.23806 0.11741 0.111203 0.3109 0.357811 frac of ind that is embryo
theta_bp - 0.00784848 0.0063132 0.143139 0.172134 0.103709 0.0989093 0.214331 0.230744 fraction of individuals that is juvenile
theta_pi - 0.984313 0.987381 0.671985 0.589805 0.778881 0.789887 0.474769 0.411444 frac of ind that is adult
L_bi cm 1.29149 1.96365 0.719788 0.855358 0.66642 0.834255 0.541438 0.579363 mean structural length of post-natals
L2_bi cm^2 1.82249 4.2338 0.862174 1.47846 0.62778 1.03814 0.592583 0.796386 mean squared structural length of post-natals
L3_bi cm^3 2.6826 9.51481 1.30858 3.40701 0.763084 1.70799 1.07296 2.01808 mean cubed structural length of post-natals
Ww_bi g 3.52221 14.0324 1.79593 5.33194 1.27529 3.44718 1.79316 4.07302 mean wet weight of post-natals
L_pi cm 1.30026 1.97494 0.832072 1.04689 0.727818 0.911953 0.694798 0.787465 mean structural length of adults
L2_pi cm^2 1.83672 4.26061 1.03788 1.89828 0.7057 1.16233 0.841538 1.21832 mean squared structural length of adults
L3_pi cm^3 2.70393 9.57559 1.58577 4.39898 0.863502 1.92059 1.55352 3.14455 mean cubed structural length of adults
Ww_pi g 3.55022 14.1221 2.17636 6.88436 1.44311 3.87626 2.59629 6.34655 mean wet weight of adults
R 1/d 0 0.330321 0 0.0437333 0 0 0 0.0247496 mean reproduction rate of adults
J_X g/d 0.0211208 0.0744336 0.0118897 0.0309299 0.0156029 0.0391421 0.0147281 0.0300271 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.262546 0.23425 0.062684 0.0578287 yield of living structure on food
Y_VX_d mol/mol 0.0589646 0.0509218 0.115339 0.101678 0.000975888 0.00057566 0.13999 0.125732 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.176228 0.238529 0.0420752 0.0588851 yield of living reserve on food
Y_EX_d mol/mol 0.0184548 0.0241777 0.0429561 0.0574469 0.000655043 0.000586176 0.0939649 0.128029 yield of dead reserve on food
Y_CX mol/mol 0.813206 0.815526 0.73233 0.7315 0.45022 0.416684 0.551911 0.520151 yield of CO2 on food
Y_HX mol/mol 0.585056 0.586725 0.526871 0.526274 0.323908 0.299781 0.39707 0.37422 yield of H2O on food
Y_OX mol/mol -0.884361 -0.886884 -0.796409 -0.795507 -0.489614 -0.453144 -0.600204 -0.565664 yield of O2 on food
Y_NX mol/mol 0.121981 0.122329 0.10985 0.109725 0.067533 0.0625026 0.0827867 0.0780226 yield of N-waste on food
mu_TX J/mol 432868 433741 391205 390065 243453 223574 296341 277917 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female differ.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer