Scomber scombrus: Population traits

at T = 12 °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 - 0.284111 0.295768 0.647884 0.647884 1 1 scaled functional response
r 1/d 0 0 0.00923025 0.00108888 0.0143007 0.00161857 spec pop growth rate
t2 d NaN NaN 75.0951 636.567 48.4696 428.246 population doubling time
a_b d 13.9773 13.8829 12.1791 12.1791 11.3621 11.3621 age at birth
t_j d 168.263 161.882 80.3703 80.3703 57.2772 57.2772 time since birth at metam
t_p d 7868.23 5253.34 1140.48 1140.48 738.844 738.844 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.618125 1 0.425899 1 0.326737 survival probability at metam
S_p - 0.999982 0.0036629 0.999996 0.0035792 0.999998 0.00355659 survival probability at puberty
theta_0b - 0.00157041 0.321507 0.106116 0.463913 0.149724 0.532417 frac of ind that is embryo
theta_bj - 0.00157447 0.255862 0.0950455 0.30893 0.127518 0.315802 frac of ind between b and j
theta_jp - 0.0173792 0.411699 0.373142 0.222226 0.347935 0.147641 frac of ind between j and p
theta_pi - 0.979476 0.0109323 0.425696 0.00493101 0.374823 0.00414051 frac of ind that is adult
L_bi cm 3.11242 0.0817163 0.460787 0.0640762 0.417519 0.0636101 mean structural length of post-natals
L2_bi cm^2 10.4246 0.0732453 0.50208 0.0176623 0.429728 0.0168628 mean squared structural length of post-natals
L3_bi cm^3 35.7577 0.229128 0.806394 0.049017 0.674281 0.0517067 mean cubed structural length of post-natals
Ww_bi g 41.055 0.264465 1.07882 0.0655764 1.02587 0.0786683 mean wet weight of post-natals
L_pi cm 3.17043 1.56735 0.854285 0.813849 0.817811 0.789696 mean structural length of adults
L2_pi cm^2 10.626 4.30873 1.039 1.50708 0.957516 1.47492 mean squared structural length of adults
L3_pi cm^3 36.4496 14.1999 1.69077 5.29368 1.52676 5.80244 mean cubed structural length of adults
Ww_pi g 41.8494 16.3899 2.26196 7.08203 2.32286 8.82803 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.18218 0.00128752 0.0200718 0.000608173 0.026539 0.000890733 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 0.370829 0.0877609 0.363339 0.0939575 yield of living structure on food
Y_VX_d mol/mol 0.0291319 0.0746652 2.23991e-05 0.200665 8.39438e-06 0.211065 yield of dead structure on food
Y_EX mol/mol 0 0 0.125277 0.0296481 0.189457 0.0489926 yield of living reserve on food
Y_EX_d mol/mol 0.00431575 0.0115151 7.56707e-06 0.0677904 4.37711e-06 0.110056 yield of dead reserve on food
Y_CX mol/mol 0.857177 0.804445 0.394489 0.50476 0.337816 0.426554 yield of CO2 on food
Y_HX mol/mol 0.616691 0.578753 0.283813 0.363147 0.24304 0.306882 yield of H2O on food
Y_OX mol/mol -0.93218 -0.874834 -0.429007 -0.548927 -0.367375 -0.463877 yield of O2 on food
Y_NX mol/mol 0.128577 0.120667 0.0591734 0.0757141 0.0506723 0.063983 yield of N-waste on food
mu_TX J/mol 455560 428834 218168 274696 186622 232512 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