Eschrichtius robustus: Population traits

at T = 38 °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_minf f_max date: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.864908 0.897593 0.948796 0.948796 1 1 scaled functional response
r 1/d 0 0 0.000253301 3.86178e-05 0.000331431 6.16952e-05 spec pop growth rate
t2 d NaN NaN 2736.46 17948.9 2091.38 11235 population doubling time
a_b d 413.867 413.867 413.867 413.867 413.867 413.867 age at birth
t_x d 8028.45 4588.08 3464.42 3464.42 2943.85 2943.85 time since birth at weaning
t_p d 193.751 189.539 183.782 183.782 178.856 178.856 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_x - 1 0.426132 1 0.415441 1 0.405956 survival probability at weaning
S_p - 0.999964 0.0979267 0.999998 0.0977168 0.999999 0.0975293 survival probability at puberty
theta_0b - 0.0101269 0.095609 0.0995916 0.171565 0.128227 0.220557 frac of ind that is embryo
theta_bx - 0.0101232 0.061259 0.0896485 0.106978 0.111753 0.134804 fraction of individuals that is baby
theta_xp - 0.186252 0.149195 0.436574 0.194427 0.431478 0.207163 fraction of individuals that is juvenile
theta_pi - 0.793498 0.693937 0.374186 0.52703 0.328542 0.437476 frac of ind that is adult
L_bi cm 119.116 116.084 105.6 112.221 103.501 110.102 mean structural length of post-natals
L2_bi cm^2 14313.5 14024.3 11946.8 13606.7 11672.8 13477.7 mean squared structural length of post-natals
L3_bi cm^3 1.72836e+06 1.72775e+06 1.41151e+06 1.71686e+06 1.39225e+06 1.74579e+06 mean cubed structural length of post-natals
Ww_bi g 1.43927e+07 1.48661e+07 1.27574e+07 1.55171e+07 1.31872e+07 1.65359e+07 mean wet weight of post-natals
L_pi cm 122.306 126.701 130.586 133.035 134.369 138.847 mean structural length of adults
L2_pi cm^2 14958.7 16053.8 17065.3 17704.4 18088.4 19299.2 mean squared structural length of adults
L3_pi cm^3 1.82953e+06 2.03417e+06 2.23175e+06 2.3569e+06 2.43938e+06 2.68519e+06 mean cubed structural length of adults
Ww_pi g 1.52352e+07 1.75026e+07 2.01708e+07 2.13018e+07 2.31055e+07 2.54338e+07 mean wet weight of adults
R 1/d 3.07489e-05 0.00033278 0.000609761 0.000779943 0.000879535 0.00120217 mean reproduction rate of adults
J_X g/d 37994.4 38633.6 34787.9 39621.5 35824.6 41363.9 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 0.0102776 0.00167337 0.0128804 0.00260388 yield of living structure on food
Y_VX_d mol/mol 0.0011905 0.00293142 6.95513e-06 0.00395882 2.84938e-06 0.00494608 yield of dead structure on food
Y_EX mol/mol 0 0 0.0826124 0.0134507 0.109121 0.0220598 yield of living reserve on food
Y_EX_d mol/mol 0.00872328 0.0222914 5.5906e-05 0.0318214 2.41396e-05 0.0419026 yield of dead reserve on food
Y_CX mol/mol 0.814658 0.800497 0.737847 0.776742 0.710952 0.757679 yield of CO2 on food
Y_HX mol/mol 0.694783 0.682706 0.629275 0.662446 0.606337 0.646189 yield of H2O on food
Y_OX mol/mol -0.957773 -0.941125 -0.867468 -0.913196 -0.835849 -0.890785 yield of O2 on food
Y_NX mol/mol 0.0660533 0.0649052 0.0598254 0.0629791 0.0576448 0.0614334 yield of N-waste on food
mu_TX J/mol 459048 450856 414591 437101 398996 426051 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