Leptonychotes weddellii: 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: 2025/02/12
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.912116 0.912116 0.929315 0.929315 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000594179 0.000594179 0.000226769 0.000226769 spec pop growth rate
t2 d NaN NaN NaN NaN 1166.56 1166.56 3056.63 3056.63 population doubling time
a_b d 311.615 NaN 311.615 NaN 311.615 311.615 311.615 311.615 age at birth
t_x d 3057.06 NaN 2214.55 NaN 1405.38 1673.57 1405.38 1673.57 time since birth at weaning
t_p d 41.5516 NaN 41.1807 NaN 39.8392 39.88 39.8392 39.88 time since birth at puberty
S_b - 0.999999 NaN 0.999999 NaN 0.999999 0.999999 0.999999 0.999999 survival probability at birth
S_x - 0.99999 NaN 0.554005 NaN 0.99999 0.99999 0.527585 0.528399 survival probability at weaning
S_p - 0.996498 NaN 0.267428 NaN 0.999724 0.999537 0.263541 0.250629 survival probability at puberty
theta_0b - 0.0271721 NaN 0.0910337 NaN 0.170029 0.170034 0.219675 0.219165 frac of ind that is embryo
theta_bx - 0.0271668 NaN 0.0663286 NaN 0.141265 0.141269 0.146036 0.145809 fraction of individuals that is baby
theta_xp - 0.239133 NaN 0.185717 NaN 0.331872 0.385279 0.214554 0.247638 fraction of individuals that is juvenile
theta_pi - 0.706528 NaN 0.65692 NaN 0.356834 0.303417 0.419735 0.387389 frac of ind that is adult
L_bi cm 26.9147 NaN 26.6572 NaN 25.3587 25.3161 25.8932 25.8531 mean structural length of post-natals
L2_bi cm^2 729.428 NaN 721.933 NaN 665.854 663.488 697.842 695.477 mean squared structural length of post-natals
L3_bi cm^3 19864.7 NaN 19763.6 NaN 17962.4 17862.4 19365.4 19260.4 mean cubed structural length of post-natals
Ww_bi g 201749 NaN 204135 NaN 198276 196747 213763 212146 mean wet weight of post-natals
L_pi cm 27.7538 NaN 28.2392 NaN 29.6247 29.7992 29.9629 30.0394 mean structural length of adults
L2_pi cm^2 770.273 NaN 797.466 NaN 878.206 888.277 898.233 902.585 mean squared structural length of adults
L3_pi cm^3 21378 NaN 22520.6 NaN 26050.8 26486.8 26940.6 27126.1 mean cubed structural length of adults
Ww_pi g 217119 NaN 232612 NaN 287559 291741 297381 298783 mean wet weight of adults
R 1/d 0.000123035 NaN 0.000443733 NaN 0.00139137 0.00100442 0.00161947 0.00116843 mean reproduction rate of adults
J_X g/d 1204.56 NaN 1214.67 NaN 1205.52 1198.39 1263.44 1256.17 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.00885332 0.00885643 0.00347581 0.00347697 yield of living structure on food
Y_VX_d mol/mol 0.00159254 NaN 0.00304572 NaN 9.51135e-05 9.55639e-05 0.00436714 0.00436352 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.0888732 0.0886936 0.0348915 0.0348204 yield of living reserve on food
Y_EX_d mol/mol 0.0145816 NaN 0.0284131 NaN 0.000954787 0.000957033 0.0438391 0.0436989 yield of dead reserve on food
Y_CX mol/mol 0.808867 NaN 0.794729 NaN 0.73246 0.732621 0.743748 0.743945 yield of CO2 on food
Y_HX mol/mol 0.689845 NaN 0.677787 NaN 0.624681 0.624818 0.634307 0.634476 yield of H2O on food
Y_OX mol/mol -0.950965 NaN -0.934343 NaN -0.861135 -0.861324 -0.874406 -0.874638 yield of O2 on food
Y_NX mol/mol 0.0655838 NaN 0.0644375 NaN 0.0593886 0.0594017 0.0603039 0.0603199 yield of N-waste on food
mu_TX J/mol 455683 NaN 447489 NaN 411375 411469 417920 418035 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