Monachus monachus: 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 - 0.868876 0.868876 0.894882 0.894882 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000497375 0.000497375 0.000150239 0.000150239 spec pop growth rate
t2 d NaN NaN NaN NaN 1393.61 1393.61 4613.64 4613.64 population doubling time
a_b d 306.928 306.928 306.928 306.928 306.928 306.928 306.928 306.928 age at birth
t_x d 3519.07 2477 2353.65 1998.46 1409.62 1320.22 1409.62 1320.22 time since birth at weaning
t_p d 145.212 141.911 141.144 138.092 128.31 125.982 128.31 125.982 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_x - 0.999998 0.999998 0.547849 0.539792 0.999998 0.999998 0.512121 0.505094 survival probability at weaning
S_p - 0.999235 0.999773 0.227589 0.226994 0.999959 0.999967 0.224914 0.224385 survival probability at puberty
theta_0b - 0.016903 0.0166423 0.0710583 0.0729107 0.141881 0.141862 0.190349 0.195102 frac of ind that is embryo
theta_bx - 0.0168993 0.0166388 0.0516601 0.0526107 0.121769 0.121754 0.128052 0.130351 fraction of individuals that is baby
theta_xp - 0.176824 0.117634 0.143117 0.123646 0.311684 0.292248 0.186715 0.176865 fraction of individuals that is juvenile
theta_pi - 0.789374 0.849085 0.734165 0.750833 0.424666 0.444136 0.494883 0.497682 frac of ind that is adult
L_bi cm 30.8475 31.5698 30.8404 31.5047 29.5655 30.0702 30.688 31.1766 mean structural length of post-natals
L2_bi cm^2 957.486 1003.14 967.274 1010.62 914.446 948.045 990.906 1026.19 mean squared structural length of post-natals
L3_bi cm^3 29843.1 32011.9 30663.9 32787.5 29240.8 30945.4 33105.7 35017.8 mean cubed structural length of post-natals
Ww_bi g 156330 170952 164519 179353 171878 185525 194595 209940 mean wet weight of post-natals
L_pi cm 31.6181 32.3401 32.5114 33.2506 34.8741 35.4585 35.6366 36.3532 mean structural length of adults
L2_pi cm^2 999.707 1045.91 1057.03 1105.7 1218.22 1260.1 1271.42 1323.62 mean squared structural length of adults
L3_pi cm^3 31609 33826.3 34367.8 36771.4 42623 44876 45409.8 48262.6 mean cubed structural length of adults
Ww_pi g 165580 180641 184392 201146 250538 269043 266919 289346 mean wet weight of adults
R 1/d 6.9692e-05 0.000267356 0.000314876 0.000521896 0.00100731 0.001182 0.00122386 0.00144177 mean reproduction rate of adults
J_X g/d 778.955 835.709 810.472 867.138 856.209 909.003 927.8 983.929 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 0.0169861 0.0169322 0.0053608 0.00534696 yield of living structure on food
Y_VX_d mol/mol 0.00227566 0.00224205 0.00468369 0.00465681 6.32991e-05 5.97529e-05 0.00756574 0.00760167 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0828582 0.0845807 0.02615 0.0267094 yield of living reserve on food
Y_EX_d mol/mol 0.00964511 0.00973105 0.0204455 0.0208167 0.000308774 0.00029848 0.0369058 0.0379722 yield of dead reserve on food
Y_CX mol/mol 0.812801 0.812753 0.800584 0.800265 0.731128 0.729597 0.753544 0.75202 yield of CO2 on food
Y_HX mol/mol 0.6932 0.693159 0.68278 0.682508 0.623545 0.622239 0.642663 0.641363 yield of H2O on food
Y_OX mol/mol -0.955591 -0.955534 -0.941227 -0.940852 -0.859569 -0.85777 -0.885924 -0.884132 yield of O2 on food
Y_NX mol/mol 0.0659028 0.0658989 0.0649122 0.0648864 0.0592806 0.0591565 0.0610982 0.0609746 yield of N-waste on food
mu_TX J/mol 458017 457987 450994 450806 411001 410103 423902 423012 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