Mirounga angustirostris: Population traits

at T = 38.1 °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 - 0.781567 0.781567 0.864486 0.864486 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000765055 0.000765055 0.000168355 0.000168355 spec pop growth rate
t2 d NaN NaN NaN NaN 906.01 906.01 4117.16 4117.16 population doubling time
a_b d 267.84 267.84 267.84 267.84 267.84 267.84 267.84 267.84 age at birth
t_x d 2543.62 1082.95 1595.91 942.694 1152.3 806.786 1152.3 806.786 time since birth at weaning
t_p d 29.6897 25.603 28.0494 24.4978 26.0606 23.1365 26.0606 23.1365 time since birth at puberty
S_b - 0.999973 0.99998 0.999974 0.99998 0.999974 0.99998 0.999974 0.99998 survival probability at birth
S_x - 0.999797 0.999862 0.571332 0.488154 0.999815 0.999872 0.52566 0.454306 survival probability at weaning
S_p - 0.965999 0.998026 0.2357 0.21543 0.996822 0.999109 0.224172 0.20805 survival probability at puberty
theta_0b - 0.0421729 0.0364857 0.148994 0.189142 0.189377 0.18781 0.240689 0.291759 frac of ind that is embryo
theta_bx - 0.0421681 0.0364824 0.111104 0.130282 0.154273 0.153 0.164875 0.185906 fraction of individuals that is baby
theta_xp - 0.354814 0.110944 0.245599 0.148448 0.333209 0.227244 0.225512 0.157758 fraction of individuals that is juvenile
theta_pi - 0.560845 0.816088 0.494303 0.532127 0.32314 0.431947 0.368925 0.364578 frac of ind that is adult
L_bi cm 42.4324 55.1531 43.1367 52.7898 42.2675 50.263 43.8389 50.8244 mean structural length of post-natals
L2_bi cm^2 1828.62 3119.44 1939.67 3019.75 1900.28 2781.4 2071.89 2948.53 mean squared structural length of post-natals
L3_bi cm^3 79680.8 179282 89778.7 181574 89688.5 165309 103406 187151 mean cubed structural length of post-natals
Ww_bi g 266222 737147 322259 806514 358342 823460 413147 932258 mean wet weight of post-natals
L_pi cm 45.4601 58.4662 49.5231 62.8905 53.1549 63.2306 54.9711 67.5203 mean structural length of adults
L2_pi cm^2 2066.72 3428.95 2454.21 3983.77 2836.87 4067 3033.28 4639.67 mean squared structural length of adults
L3_pi cm^3 93961.9 201664 121703 253939 152002 265859 167971 323749 mean cubed structural length of adults
Ww_pi g 313937 829177 436852 1.12795e+06 607308 1.32433e+06 671111 1.6127e+06 mean wet weight of adults
R 1/d 0.0002783 0.00321296 0.00111905 0.00440714 0.00196825 0.0045 0.00237409 0.0057732 mean reproduction rate of adults
J_X g/d 1395.65 3164.48 1637.47 3388.35 1855.69 3610.13 2023.27 3827.06 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 0.0369764 0.0350322 0.00860435 0.00823291 yield of living structure on food
Y_VX_d mol/mol 0.0111249 0.00987122 0.0209917 0.0197786 0.00195135 0.00134651 0.0237307 0.0225973 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.110759 0.139474 0.0257735 0.0327778 yield of living reserve on food
Y_EX_d mol/mol 0.0260445 0.030716 0.0543577 0.0680738 0.00584508 0.00536088 0.0710831 0.0899673 yield of dead reserve on food
Y_CX mol/mol 0.789446 0.786285 0.75413 0.742565 0.679961 0.656205 0.704326 0.681771 yield of CO2 on food
Y_HX mol/mol 0.673282 0.670585 0.643162 0.633298 0.579907 0.559647 0.600686 0.58145 yield of H2O on food
Y_OX mol/mol -0.928133 -0.924416 -0.886612 -0.873015 -0.799414 -0.771485 -0.828059 -0.801541 yield of O2 on food
Y_NX mol/mol 0.0640092 0.0637528 0.0611457 0.060208 0.055132 0.0532058 0.0571075 0.0552787 yield of N-waste on food
mu_TX J/mol 444804 442893 424648 417825 382178 368160 396094 382831 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