Gymnarchus niloticus: Population traits

at T = 32 °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: 2023/11/05
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.146223 0.207342 0.603671 0.603671 1 1 scaled functional response
r 1/d 0 0 0.0428029 0.000407284 0.0487964 0.000478149 spec pop growth rate
t2 d NaN NaN 16.1939 1701.88 14.2049 1449.65 population doubling time
a_b d 6.01519 5.76164 5.24879 5.24879 5.11632 5.11632 age at birth
t_j d 13.3745 10.4521 6.53328 6.53328 5.80549 5.80549 time since birth at metam
t_p d 352.571 134.086 56.0078 56.0078 47.2299 47.2299 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.214045 1 0.099042 1 0.0781613 survival probability at metam
S_p - 1 0.0610207 1 0.0562439 1 0.055447 survival probability at puberty
theta_0b - 0.0016025 0.336365 0.201162 0.641707 0.220879 0.683679 frac of ind that is embryo
theta_bj - 0.00160348 0.171585 0.160738 0.249695 0.172134 0.246852 frac of ind between b and j
theta_jp - 0.00196179 0.0334075 0.0341356 0.0118413 0.0200729 0.00607125 frac of ind between j and p
theta_pi - 0.994832 0.458642 0.603964 0.096756 0.586914 0.0633969 frac of ind that is adult
L_bi cm 1.90972 1.90133 1.56342 1.50378 1.65192 1.21003 mean structural length of post-natals
L2_bi cm^2 3.66816 4.99549 4.03073 9.56158 4.76583 10.7958 mean squared structural length of post-natals
L3_bi cm^3 7.06028 13.7616 13.6011 75.6003 18.8228 137.314 mean cubed structural length of post-natals
Ww_bi g 13.2102 30.7592 62.512 347.467 130.952 955.307 mean wet weight of post-natals
L_pi cm 1.91542 2.63309 1.96301 4.843 2.08592 4.96266 mean structural length of adults
L2_pi cm^2 3.68092 7.1951 5.29457 35.1994 6.2889 53.5569 mean squared structural length of adults
L3_pi cm^3 7.08544 19.9024 17.9758 279.888 24.9729 685.039 mean cubed structural length of adults
Ww_pi g 13.2573 44.4849 82.6188 1286.4 173.738 4765.87 mean wet weight of adults
R 1/d 0.0283113 0.25364 0.169533 2.53389 0.179597 4.22406 mean reproduction rate of adults
J_X g/d 1.27428 2.50811 6.0538 14.3538 11.9168 26.9759 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 0.0961652 0.00214513 0.0770753 0.00243391 yield of living structure on food
Y_VX_d mol/mol 0.00151214 0.00464849 1.43295e-07 0.00661256 8.03643e-08 0.00682545 yield of dead structure on food
Y_EX mol/mol 0 0 0.345821 0.00771412 0.459143 0.014499 yield of living reserve on food
Y_EX_d mol/mol 0.00131717 0.00574158 5.15306e-07 0.0237795 4.78736e-07 0.0406597 yield of dead reserve on food
Y_CX mol/mol 0.887796 0.880235 0.448639 0.850374 0.354406 0.826207 yield of CO2 on food
Y_HX mol/mol 0.63872 0.63328 0.32277 0.611797 0.254975 0.59441 yield of H2O on food
Y_OX mol/mol -0.965478 -0.957255 -0.487894 -0.924781 -0.385416 -0.8985 yield of O2 on food
Y_NX mol/mol 0.133169 0.132035 0.0672958 0.127556 0.0531609 0.123931 yield of N-waste on food
mu_TX J/mol 471019 467018 234216 450800 181433 437533 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