Merluccius capensis: Population traits

at T = 10 °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: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.248274 0.248274 0.624137 0.624137 1 1 scaled functional response
r 1/d 0 0 0.00836931 0.0016008 0.0112117 0.00198289 spec pop growth rate
t2 d NaN NaN 82.8201 433.001 61.8237 349.564 population doubling time
a_b d 19.0189 19.0189 16.9374 16.9374 16.2287 16.2287 age at birth
t_j d 53.6236 53.6236 31.7605 31.7605 26.4427 26.4427 time since birth at metam
t_p d 5567.09 5567.09 1347.68 1347.68 1025.16 1025.16 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.279909 1 0.146493 1 0.109468 survival probability at metam
S_p - 0.999998 0.0275973 0.999999 0.0272751 0.999999 0.0272037 survival probability at puberty
theta_0b - 0.00211032 0.541099 0.131986 0.65344 0.166156 0.685565 frac of ind that is embryo
theta_bj - 0.00211441 0.306603 0.114723 0.284227 0.138717 0.269142 frac of ind between b and j
theta_jp - 0.00384716 0.107431 0.0878896 0.0386687 0.0752154 0.0241407 frac of ind between j and p
theta_pi - 0.991928 0.0448667 0.665402 0.0236648 0.619912 0.0211518 frac of ind that is adult
L_bi cm 3.52185 0.160452 0.583128 0.0853861 0.53355 0.0845453 mean structural length of post-natals
L2_bi cm^2 13.2753 0.299893 0.659928 0.0385377 0.566349 0.037513 mean squared structural length of post-natals
L3_bi cm^3 51.2797 1.04979 1.07084 0.0925307 0.882503 0.0963309 mean cubed structural length of post-natals
Ww_bi g 101.464 2.07715 3.7053 0.320174 4.36111 0.476043 mean wet weight of post-natals
L_pi cm 3.54253 1.09592 0.736476 0.445657 0.690294 0.438663 mean structural length of adults
L2_pi cm^2 13.3551 3.03204 0.858716 0.512381 0.759361 0.504778 mean squared structural length of adults
L3_pi cm^3 51.5879 10.7348 1.39669 1.35132 1.18682 1.4282 mean cubed structural length of adults
Ww_pi g 102.073 21.2402 4.83282 4.67583 5.86495 7.05782 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.484788 0.0108908 0.0607752 0.0033929 0.0836222 0.00528877 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 0.147464 0.0436567 0.118322 0.0361169 yield of living structure on food
Y_VX_d mol/mol 0.0155402 0.0376788 9.1721e-06 0.0912222 3.79066e-06 0.0751812 yield of dead structure on food
Y_EX mol/mol 0 0 0.36279 0.107404 0.466395 0.142364 yield of living reserve on food
Y_EX_d mol/mol 0.0152081 0.0368737 2.25651e-05 0.224424 1.49418e-05 0.296345 yield of dead reserve on food
Y_CX mol/mol 0.859877 0.816072 0.380338 0.423918 0.305889 0.340618 yield of CO2 on food
Y_HX mol/mol 0.618634 0.587119 0.273632 0.304985 0.22007 0.245056 yield of H2O on food
Y_OX mol/mol -0.935116 -0.887479 -0.413618 -0.461011 -0.332654 -0.370422 yield of O2 on food
Y_NX mol/mol 0.128982 0.122411 0.0570508 0.0635877 0.0458833 0.0510927 yield of N-waste on food
mu_TX J/mol 456365 433380 199216 222555 156811 175561 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