Clarias gariepinus: Population traits

at T = 29.5 °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: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.0990846 0.0992083 0.549604 0.549604 1 1 scaled functional response
r 1/d 0 0 0.103842 0.0155532 0.113639 0.0145694 spec pop growth rate
t2 d NaN NaN 6.675 44.5661 6.09955 47.5756 population doubling time
a_b d 0.967224 0.967076 0.843416 0.843416 0.826944 0.826944 age at birth
t_j d 0.13223 0.13214 0.0738164 0.0738164 0.0680726 0.0680726 time since birth at metam
t_p d 269.894 453.566 74.5404 74.5404 64.9731 64.9731 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.799421 1 0.79686 1 0.796638 survival probability at metam
S_p - 1 0.370871 1 0.249397 1 0.234331 survival probability at puberty
theta_0b - 0.000172999 0.151274 0.0835938 0.511213 0.0894022 0.526584 frac of ind that is embryo
theta_bj - 2.37308e-05 0.0185824 0.00699764 0.0398831 0.00701695 0.0386649 frac of ind between b and j
theta_jp - 0.000149853 0.0712903 0.069849 0.206007 0.0746571 0.207131 frac of ind between j and p
theta_pi - 0.999653 0.758853 0.83956 0.242897 0.828924 0.227621 frac of ind that is adult
L_bi cm 1.69283 1.25361 0.518421 0.189719 0.525718 0.193475 mean structural length of post-natals
L2_bi cm^2 2.87996 2.06804 0.470304 0.160174 0.493611 0.185692 mean squared structural length of post-natals
L3_bi cm^3 4.90822 3.5052 0.608469 0.400658 0.674175 0.59234 mean cubed structural length of post-natals
Ww_bi g 10.0869 7.20816 4.16952 2.7455 7.85313 6.89988 mean wet weight of post-natals
L_pi cm 1.69312 1.39523 0.55966 0.31763 0.570692 0.333008 mean structural length of adults
L2_pi cm^2 2.88046 2.31256 0.512915 0.318106 0.541756 0.381571 mean squared structural length of adults
L3_pi cm^3 4.90907 3.9203 0.664132 0.805965 0.740565 1.23166 mean cubed structural length of adults
Ww_pi g 10.0886 8.06179 4.55094 5.52285 8.62648 14.347 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.745637 0.536097 0.676126 0.230262 1.29129 0.485755 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 0.0934512 0.0270628 0.0593301 0.0177662 yield of living structure on food
Y_VX_d mol/mol 0.00120447 0.00349444 4.52453e-09 0.0531612 2.29939e-09 0.035036 yield of dead structure on food
Y_EX mol/mol 0 0 0.54692 0.158384 0.631778 0.189184 yield of living reserve on food
Y_EX_d mol/mol 0.00127084 0.0036916 2.64797e-08 0.311124 2.44851e-08 0.373081 yield of dead reserve on food
Y_CX mol/mol 0.88815 0.883439 0.250253 0.340893 0.199517 0.275558 yield of CO2 on food
Y_HX mol/mol 0.638974 0.635585 0.180043 0.245253 0.143541 0.198248 yield of H2O on food
Y_OX mol/mol -0.965863 -0.96074 -0.272151 -0.370721 -0.216975 -0.299669 yield of O2 on food
Y_NX mol/mol 0.133222 0.132516 0.037538 0.0511339 0.0299275 0.0413336 yield of N-waste on food
mu_TX J/mol 471199 468722 124968 174158 95357.1 136853 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