Gadus macrocephalus: Population traits

at T = 2.9 °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: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.307722 0.307722 0.653861 0.653861 1 1 scaled functional response
r 1/d 0 0 0.00685703 0.00197862 0.00817979 0.00219795 spec pop growth rate
t2 d NaN NaN 101.086 350.318 84.739 315.361 population doubling time
a_b d 8.75713 8.75713 8.59202 8.59202 8.57692 8.57692 age at birth
t_j d 1.72705 1.72705 1.71601 1.71601 1.70205 1.70205 time since birth at metam
t_p d 7560.1 7560.1 1754.71 1754.71 1478.43 1478.43 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.567699 1 0.556082 1 0.55584 survival probability at metam
S_p - 1 0.182516 1 0.17519 1 0.173625 survival probability at puberty
theta_0b - 0.000861821 0.521247 0.0578204 0.596114 0.0684473 0.600303 frac of ind that is embryo
theta_bj - 0.00017026 0.0786291 0.0110214 0.0881479 0.0128796 0.0881049 frac of ind between b and j
theta_jp - 0.000693055 0.134778 0.0428843 0.14459 0.0502359 0.144938 frac of ind between j and p
theta_pi - 0.998275 0.265346 0.888274 0.171148 0.868437 0.166655 frac of ind that is adult
L_bi cm 1.15556 0.25824 0.292654 0.0609962 0.261639 0.0588859 mean structural length of post-natals
L2_bi cm^2 1.37296 0.251972 0.147895 0.0164905 0.122206 0.0151346 mean squared structural length of post-natals
L3_bi cm^3 1.64744 0.291151 0.102146 0.0128082 0.0807874 0.0121141 mean cubed structural length of post-natals
Ww_bi g 107.216 18.9482 14.0105 1.75678 16.904 2.53476 mean wet weight of post-natals
L_pi cm 1.15654 0.448418 0.308953 0.114545 0.2789 0.110937 mean structural length of adults
L2_pi cm^2 1.37415 0.454222 0.156834 0.0382459 0.131043 0.0356062 mean squared structural length of adults
L3_pi cm^3 1.64887 0.525302 0.108344 0.0302097 0.0866576 0.0290373 mean cubed structural length of adults
Ww_pi g 107.309 34.1868 14.8606 4.14357 18.1323 6.07579 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.750464 0.137726 0.17296 0.0192785 0.218604 0.0270626 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 0.00404962 0.00131456 0.00302292 0.000983874 yield of living structure on food
Y_VX_d mol/mol 0.000241974 0.000657627 7.42466e-08 0.00258569 3.29814e-08 0.0019359 yield of dead structure on food
Y_EX mol/mol 0 0 0.551398 0.178991 0.629495 0.204883 yield of living reserve on food
Y_EX_d mol/mol 0.0155057 0.0421409 1.01095e-05 0.352068 6.86806e-06 0.403134 yield of dead reserve on food
Y_CX mol/mol 0.874877 0.847826 0.335167 0.355666 0.2581 0.279689 yield of CO2 on food
Y_HX mol/mol 0.629426 0.609964 0.241134 0.255882 0.185689 0.201221 yield of H2O on food
Y_OX mol/mol -0.951429 -0.922011 -0.364494 -0.386787 -0.280684 -0.304162 yield of O2 on food
Y_NX mol/mol 0.131232 0.127174 0.0502751 0.0533499 0.038715 0.0419534 yield of N-waste on food
mu_TX J/mol 463851 448994 167201 178468 124762 136631 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