Trichiurus lepturus: Population traits

at T = 15.2 °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 - 0.205146 0.233278 0.616639 0.616639 1 1 scaled functional response
r 1/d 0 0 0.00714384 0.000940693 0.0113626 0.00144144 spec pop growth rate
t2 d NaN NaN 97.0273 736.848 61.0025 480.871 population doubling time
a_b d 8.74913 8.56493 7.27387 7.27387 6.71936 6.71936 age at birth
t_j d 38.1958 33.7384 13.984 13.984 9.47967 9.47967 time since birth at metam
t_p d 11376.5 4532.87 990.803 990.803 622.05 622.05 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.695945 0.999999 0.475045 0.999999 0.362477 survival probability at metam
S_p - 0.999991 0.239817 0.999998 0.23907 0.999999 0.238909 survival probability at puberty
theta_0b - 0.00118355 0.185038 0.0504409 0.343558 0.0732484 0.418455 frac of ind that is embryo
theta_bj - 0.00119031 0.156052 0.048087 0.241776 0.0681258 0.2616 frac of ind between b and j
theta_jp - 0.00400616 0.2341 0.0421978 0.107963 0.0265134 0.0503257 frac of ind between j and p
theta_pi - 0.99362 0.42481 0.859274 0.306704 0.832112 0.269619 frac of ind that is adult
L_bi cm 2.31123 0.392406 0.590356 0.240331 0.563581 0.234845 mean structural length of post-natals
L2_bi cm^2 5.98963 0.640425 0.597998 0.247803 0.55328 0.242024 mean squared structural length of post-natals
L3_bi cm^3 16.2635 1.67658 0.858158 0.727003 0.785123 0.78801 mean cubed structural length of post-natals
Ww_bi g 17.585 1.83148 1.06775 0.904564 1.09609 1.10012 mean wet weight of post-natals
L_pi cm 2.32283 0.672166 0.642666 0.414276 0.61716 0.404965 mean structural length of adults
L2_pi cm^2 6.02091 1.22139 0.659914 0.521428 0.615215 0.512943 mean squared structural length of adults
L3_pi cm^3 16.3486 3.21571 0.948238 1.5552 0.874322 1.69884 mean cubed structural length of adults
Ww_pi g 17.6769 3.51283 1.17983 1.93504 1.22062 2.37171 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.0460101 0.00558827 0.013822 0.00570781 0.0207427 0.00904141 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 0.443536 0.119816 0.430082 0.12563 yield of living structure on food
Y_VX_d mol/mol 0.0774768 0.155143 0.000169731 0.24455 6.07886e-05 0.251385 yield of dead structure on food
Y_EX mol/mol 0 0 0.108328 0.0292634 0.170345 0.049759 yield of living reserve on food
Y_EX_d mol/mol 0.00629526 0.0143345 4.14544e-05 0.0597279 2.40769e-05 0.0995679 yield of dead reserve on food
Y_CX mol/mol 0.806853 0.721148 0.33855 0.437268 0.290113 0.364283 yield of CO2 on food
Y_HX mol/mol 0.580486 0.518826 0.243568 0.31459 0.20872 0.262081 yield of H2O on food
Y_OX mol/mol -0.877453 -0.784248 -0.368173 -0.475529 -0.315498 -0.396158 yield of O2 on food
Y_NX mol/mol 0.121028 0.108172 0.0507825 0.0655901 0.043517 0.0546425 yield of N-waste on food
mu_TX J/mol 430299 387045 191044 241372 163726 201863 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