Arctocephalus pusillus: Population traits

at T = 37.5 °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: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.82109 0.82109 0.835895 0.835895 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000683199 0.000683199 0.000298963 0.000298963 spec pop growth rate
t2 d NaN NaN NaN NaN 1014.56 1014.56 2318.5 2318.5 population doubling time
a_b d 386.08 386.08 386.08 386.08 386.08 386.08 386.08 386.08 age at birth
t_x d 4094.73 2460.94 2991.86 2198.43 1285.39 1217.19 1285.39 1217.19 time since birth at weaning
t_p d 495.648 428.51 477.638 415.498 354.83 322.25 354.83 322.25 time since birth at puberty
S_b - 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_x - 0.999985 0.999986 0.619785 0.589756 0.999986 0.999987 0.55248 0.528102 survival probability at weaning
S_p - 0.995137 0.99915 0.301506 0.283135 0.99985 0.999884 0.301687 0.283007 survival probability at puberty
theta_0b - 0.0248567 0.0237932 0.0754197 0.0820043 0.232213 0.232161 0.283349 0.300239 frac of ind that is embryo
theta_bx - 0.0248479 0.023785 0.0584832 0.0619879 0.178319 0.178281 0.185641 0.19235 fraction of individuals that is baby
theta_xp - 0.238377 0.127791 0.192319 0.142905 0.271185 0.25589 0.19374 0.18197 fraction of individuals that is juvenile
theta_pi - 0.711918 0.824631 0.673778 0.713103 0.318282 0.333668 0.33727 0.325441 frac of ind that is adult
L_bi cm 17.174 18.4628 17.0565 18.2225 16.2575 17.0063 16.6025 17.2299 mean structural length of post-natals
L2_bi cm^2 296.84 343.498 294.918 337.943 276.806 305.333 291.665 317.935 mean squared structural length of post-natals
L3_bi cm^3 5154.52 6424.98 5148.67 6342.41 4898.11 5731.6 5359.34 6191.7 mean cubed structural length of post-natals
Ww_bi g 23956.8 31697 24268.3 31739.5 26658.2 33188.7 29168.5 35852.9 mean wet weight of post-natals
L_pi cm 17.704 19.0278 17.9961 19.3376 19.7905 20.9109 20.3481 21.604 mean structural length of adults
L2_pi cm^2 313.433 362.087 323.866 374.006 393.068 439.541 415.506 469.194 mean squared structural length of adults
L3_pi cm^3 5549.05 6890.89 5828.6 7234.75 7834.25 9285.81 8512.87 10240.2 mean cubed structural length of adults
Ww_pi g 25790.5 33995.6 27473.1 36205.1 42638.3 53769.3 46331.7 59295.7 mean wet weight of adults
R 1/d 9.01177e-05 0.000637421 0.000288878 0.000866794 0.00165068 0.00217182 0.00205126 0.00271421 mean reproduction rate of adults
J_X g/d 2199.63 2744.71 2224.78 2749.01 2498.1 2971.35 2632.2 3094 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 0.00133957 0.00131786 0.000608708 0.000598285 yield of living structure on food
Y_VX_d mol/mol 0.000166772 0.000160224 0.000307955 0.000306169 4.33773e-06 3.75666e-06 0.000626816 0.0006468 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.00595112 0.00631317 0.00270422 0.00286607 yield of living reserve on food
Y_EX_d mol/mol 0.00060834 0.000630227 0.00114359 0.001226 1.92706e-05 1.79962e-05 0.00278466 0.00309848 yield of dead reserve on food
Y_CX mol/mol 0.823111 0.823097 0.822485 0.822411 0.817062 0.816749 0.817608 0.817159 yield of CO2 on food
Y_HX mol/mol 0.701993 0.701981 0.701459 0.701395 0.696834 0.696567 0.697299 0.696917 yield of H2O on food
Y_OX mol/mol -0.967712 -0.967695 -0.966976 -0.966888 -0.9606 -0.960232 -0.961242 -0.960714 yield of O2 on food
Y_NX mol/mol 0.0667387 0.0667376 0.066688 0.066682 0.0662483 0.0662229 0.0662925 0.0662562 yield of N-waste on food
mu_TX J/mol 463940 463931 463581 463537 460462 460278 460776 460514 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