Steno bredanensis: Population traits

at T = 37 °C with background hazards for embryo, baby, 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 stx f_min f_max date: 2025/05/23
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.959825 0.959825 0.992636 0.992636 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000228587 0.000228587 1.75488e-05 1.75488e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 3032.32 3032.32 39498.4 39498.4 population doubling time
a_b d 387.629 387.629 387.629 387.629 387.629 387.629 387.629 387.629 age at birth
t_x d 4304.18 3226.27 2913.68 2599.43 2771.81 2507.98 2771.81 2507.98 time since birth at weaning
t_p d 153.487 147.995 150.158 145.023 149.456 144.395 149.456 144.395 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_x - 0.999999 0.999999 0.546574 0.527664 0.999999 0.999999 0.544035 0.525298 survival probability at weaning
S_p - 0.999353 0.999814 0.229787 0.213893 0.999876 0.999922 0.229216 0.213393 survival probability at puberty
theta_0b - 0.027282 0.0260741 0.106757 0.112009 0.0894738 0.0888722 0.119239 0.125356 frac of ind that is embryo
theta_bx - 0.0272799 0.0260721 0.0775071 0.0798842 0.0818807 0.0813303 0.0858091 0.0886284 fraction of individuals that is baby
theta_xp - 0.275591 0.190919 0.21156 0.187238 0.371301 0.337169 0.217849 0.196213 fraction of individuals that is juvenile
theta_pi - 0.669847 0.756935 0.604177 0.620869 0.457344 0.492629 0.577103 0.589803 frac of ind that is adult
L_bi cm 25.0302 26.4395 24.7335 25.9618 24.0669 25.2217 24.6486 25.8372 mean structural length of post-natals
L2_bi cm^2 632.447 706.371 626.937 693.579 594.841 655.649 624.474 689.342 mean squared structural length of post-natals
L3_bi cm^3 16083.4 19003 16151.5 18872.8 14986.4 17410.6 16113.5 18778 mean cubed structural length of post-natals
Ww_bi g 94014.9 116459 97088.4 118969 90642 110437 97458.9 119111 mean wet weight of post-natals
L_pi cm 26.0342 27.5038 26.8455 28.3562 26.8998 28.3381 27.0167 28.5304 mean structural length of adults
L2_pi cm^2 677.784 756.481 720.72 804.183 723.691 803.28 729.962 814.127 mean squared structural length of adults
L3_pi cm^3 17645.7 20807.4 19350.2 22809.6 19472.1 22776.5 19724.3 23235.4 mean cubed structural length of adults
Ww_pi g 103147 127517 116316 143786 117773 144473 119298 147385 mean wet weight of adults
R 1/d 0.000104807 0.000392594 0.000454958 0.000783962 0.000482344 0.000781036 0.00053023 0.000865498 mean reproduction rate of adults
J_X g/d 386.982 457.456 396.724 464.526 379.206 442.38 398.097 465.114 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.00903384 0.00899638 0.000710307 0.000708495 yield of living structure on food
Y_VX_d mol/mol 0.00330786 0.00316686 0.00674699 0.00659484 0.000729426 0.000645401 0.00685037 0.00671145 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0456054 0.0480686 0.00358583 0.00378556 yield of living reserve on food
Y_EX_d mol/mol 0.0160281 0.0162411 0.0338099 0.0349774 0.00368235 0.00344844 0.0345826 0.0358599 yield of dead reserve on food
Y_CX mol/mol 0.805942 0.805876 0.786313 0.785374 0.769206 0.767256 0.781529 0.780293 yield of CO2 on food
Y_HX mol/mol 0.68735 0.687293 0.670609 0.669808 0.656019 0.654357 0.666529 0.665475 yield of H2O on food
Y_OX mol/mol -0.947527 -0.947449 -0.924449 -0.923345 -0.904337 -0.902044 -0.918824 -0.917371 yield of O2 on food
Y_NX mol/mol 0.0653467 0.0653413 0.0637551 0.063679 0.062368 0.06221 0.0633672 0.063267 yield of N-waste on food
mu_TX J/mol 454058 454012 442753 442196 432901 431755 439996 439266 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female differ.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer