Pangasius pangasius: Population traits

at T = 24 °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: 2025/06/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.181486 0.181486 0.590743 0.590743 1 1 scaled functional response
r 1/d 0 0 0.0532592 0.0100701 0.0624306 0.0105285 spec pop growth rate
t2 d NaN NaN 13.0146 68.8325 11.1027 65.835 population doubling time
a_b d 3.93469 3.93469 3.60581 3.60581 3.53276 3.53276 age at birth
t_j d 6.98236 6.98236 4.7936 4.7936 4.40392 4.40392 time since birth at metam
t_p d 697.673 697.673 203.581 203.581 175.128 175.128 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.150246 1 0.0791108 1 0.0667616 survival probability at metam
S_p - 1 0.0346084 1 0.0343007 1 0.03425 survival probability at puberty
theta_0b - 0.000512384 0.615968 0.17445 0.712253 0.197631 0.725378 frac of ind that is embryo
theta_bj - 0.00051344 0.276711 0.144247 0.25159 0.158808 0.243283 frac of ind between b and j
theta_jp - 0.000397693 0.0376557 0.0417649 0.0118768 0.0340666 0.00822299 frac of ind between j and p
theta_pi - 0.998576 0.069665 0.639539 0.0242803 0.609494 0.0231156 frac of ind that is adult
L_bi cm 4.05101 0.454294 0.50567 0.0817293 0.476293 0.0818189 mean structural length of post-natals
L2_bi cm^2 16.6367 1.55775 0.498633 0.0348873 0.449488 0.0362764 mean squared structural length of post-natals
L3_bi cm^3 68.6401 6.30479 0.716977 0.0783815 0.628779 0.0908449 mean cubed structural length of post-natals
Ww_bi g 289.214 26.5652 8.21657 0.898253 11.7623 1.69939 mean wet weight of post-natals
L_pi cm 4.05464 2.25887 0.632152 0.379108 0.604636 0.380675 mean structural length of adults
L2_pi cm^2 16.6519 8.57266 0.642049 0.378685 0.589979 0.396078 mean squared structural length of adults
L3_pi cm^3 68.7027 34.7545 0.925374 0.926644 0.827607 1.077 mean cubed structural length of adults
Ww_pi g 289.478 146.438 10.6048 10.6194 15.4817 20.147 mean wet weight of adults
R 1/d 974.821 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 7.4044 0.692761 0.723991 0.0487253 1.10516 0.0859356 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 0.0527432 0.0161991 0.0355196 0.01113 yield of living structure on food
Y_VX_d mol/mol 0.00127424 0.00368878 9.99699e-09 0.0334798 4.62532e-09 0.0229307 yield of dead structure on food
Y_EX mol/mol 0 0 0.551695 0.169443 0.62893 0.197074 yield of living reserve on food
Y_EX_d mol/mol 0.00409475 0.0118538 1.04569e-07 0.3502 8.18985e-08 0.406023 yield of dead reserve on food
Y_CX mol/mol 0.885256 0.875082 0.286186 0.321304 0.226175 0.253467 yield of CO2 on food
Y_HX mol/mol 0.636893 0.629573 0.205895 0.23116 0.162721 0.182355 yield of H2O on food
Y_OX mol/mol -0.962716 -0.951652 -0.311228 -0.349418 -0.245966 -0.275645 yield of O2 on food
Y_NX mol/mol 0.132788 0.131262 0.042928 0.0481955 0.0339263 0.03802 yield of N-waste on food
mu_TX J/mol 469611 464136 142696 161857 108829 123766 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