Dichistius capensis: Population traits

at T = 16.7 °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 - 0.401548 0.401548 0.700774 0.700774 1 1 scaled functional response
r 1/d 0 0 0.00312899 0.000701764 0.00393674 0.000852022 spec pop growth rate
t2 d NaN NaN 221.524 987.722 176.071 813.532 population doubling time
a_b d 17.7614 17.7614 16.906 16.906 16.5082 16.5082 age at birth
t_j d 0.00398805 0.00398805 0.00322908 0.00322908 0.00292555 0.00292555 time since birth at metam
t_p d 9090.31 9090.31 2996.77 2996.77 2375.02 2375.02 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.99957 1 0.999569 1 0.999569 survival probability at metam
S_p - 0.999999 0.373525 0.999999 0.326493 0.999999 0.305422 survival probability at puberty
theta_0b - 0.00171695 0.371484 0.0513943 0.440349 0.0627691 0.461869 frac of ind that is embryo
theta_bj - 3.86491e-07 8.3604e-05 9.58572e-06 8.38301e-05 1.0795e-05 8.14826e-05 frac of ind between b and j
theta_jp - 0.00172091 0.227373 0.0488729 0.24941 0.0589661 0.252531 frac of ind between j and p
theta_pi - 0.996562 0.40106 0.899723 0.310156 0.878254 0.285519 frac of ind that is adult
L_bi cm 3.64309 0.438645 0.760562 0.218455 0.696092 0.211205 mean structural length of post-natals
L2_bi cm^2 14.6487 1.0175 0.996805 0.194666 0.852867 0.179507 mean squared structural length of post-natals
L3_bi cm^3 61.2213 3.70618 1.80927 0.476597 1.48448 0.450114 mean cubed structural length of post-natals
Ww_bi g 173.838 10.5237 7.61748 2.00659 8.28491 2.51209 mean wet weight of post-natals
L_pi cm 3.64926 0.648312 0.797825 0.33701 0.737715 0.334232 mean structural length of adults
L2_pi cm^2 14.674 1.59182 1.05065 0.347087 0.909738 0.333583 mean squared structural length of adults
L3_pi cm^3 61.3271 5.80789 1.90754 0.859666 1.58414 0.847988 mean cubed structural length of adults
Ww_pi g 174.138 16.4915 8.03124 3.61941 8.84108 4.73263 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.374212 0.0259928 0.0444394 0.00867855 0.0542577 0.0114199 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 0.127391 0.0385385 0.107709 0.0335824 yield of living structure on food
Y_VX_d mol/mol 0.0241312 0.0509786 8.28395e-05 0.0770227 3.99145e-05 0.0665173 yield of dead structure on food
Y_EX mol/mol 0 0 0.408957 0.123718 0.493414 0.153841 yield of living reserve on food
Y_EX_d mol/mol 0.0443892 0.0937748 0.000265936 0.247262 0.000182848 0.304716 yield of dead reserve on food
Y_CX mol/mol 0.822105 0.745872 0.353928 0.404084 0.289279 0.331968 yield of CO2 on food
Y_HX mol/mol 0.591459 0.536613 0.254631 0.290716 0.20812 0.238832 yield of H2O on food
Y_OX mol/mol -0.894039 -0.811135 -0.384896 -0.439441 -0.314591 -0.361015 yield of O2 on food
Y_NX mol/mol 0.123316 0.111881 0.0530892 0.0606125 0.0433919 0.0497952 yield of N-waste on food
mu_TX J/mol 436020 395435 183690 210680 147147 170243 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