Trichechus manatus: Population traits

at T = 36.4 °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: 2023/03/16
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.774628 0.774628 0.799292 0.799292 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000426901 0.000426901 0.00011116 0.00011116 spec pop growth rate
t2 d NaN NaN NaN NaN 1623.67 1623.67 6235.59 6235.59 population doubling time
a_b d 352.276 352.276 352.276 352.276 352.276 352.276 352.276 352.276 age at birth
t_x d 4266.89 1636.48 2790.13 1467.46 1274.42 910.566 1274.42 910.566 time since birth at weaning
t_p d 647.402 647.402 612.639 612.639 453.332 453.332 453.332 453.332 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_x - 1 1 0.560409 0.560409 1 1 0.491918 0.491918 survival probability at weaning
S_p - 0.999943 0.999997 0.227379 0.280625 0.999999 0.999999 0.225252 0.278097 survival probability at puberty
theta_0b - 0.00870214 0.00870214 0.0398098 0.0398098 0.139671 0.139671 0.187226 0.187226 frac of ind that is embryo
theta_bx - 0.00870004 0.00870004 0.02932 0.02932 0.120142 0.120142 0.124449 0.124449 fraction of individuals that is baby
theta_xp - 0.0966763 0.0317154 0.0840315 0.047084 0.240916 0.156993 0.140339 0.0984999 fraction of individuals that is juvenile
theta_pi - 0.885921 0.950882 0.846839 0.883786 0.499271 0.583194 0.547986 0.589825 frac of ind that is adult
L_bi cm 37.6141 37.6141 38.1334 38.1334 38.3994 38.3994 40.7625 40.7625 mean structural length of post-natals
L2_bi cm^2 1419.73 1419.73 1468.85 1468.85 1561.53 1561.53 1770.6 1770.6 mean squared structural length of post-natals
L3_bi cm^3 53709.1 53709.1 56930.1 56930.1 66174.3 66174.3 80035.1 80035.1 mean cubed structural length of post-natals
Ww_bi g 222721 222721 241782 241782 334997 334997 405165 405165 mean wet weight of post-natals
L_pi cm 38.1197 38.0195 39.2967 39.1702 45.3327 44.0129 47.4345 46.6326 mean structural length of adults
L2_pi cm^2 1453.11 1445.69 1544.26 1534.76 2066.29 1957.29 2258.31 2190.8 mean squared structural length of adults
L3_pi cm^3 55392.3 54980.1 60687.1 60150.4 94667.5 87867.8 107867 103570 mean cubed structural length of adults
Ww_pi g 229701 227991 257738 255459 479239 444817 546058 524307 mean wet weight of adults
R 1/d 2.78595e-05 0.000323965 0.000133369 0.000421822 0.000735736 0.0008832 0.0009507 0.00113992 mean reproduction rate of adults
J_X g/d 3595.98 3595.98 3838.87 3838.87 5105.87 5105.87 5789.49 5789.49 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.765625 0.765625 0.765625 0.765625 0.765625 0.765625 0.765625 0.765625 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.00553283 0.00553283 0.0015367 0.0015367 yield of living structure on food
Y_VX_d mol/mol 0.000384036 0.000384036 0.000817714 0.000817714 1.51169e-06 1.51169e-06 0.0020757 0.0020757 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0224762 0.0224762 0.0062426 0.0062426 yield of living reserve on food
Y_EX_d mol/mol 0.00120848 0.00120848 0.00265512 0.00265512 6.14099e-06 6.14099e-06 0.00843221 0.00843221 yield of dead reserve on food
Y_CX mol/mol 0.215324 0.215324 0.213585 0.213585 0.190881 0.190881 0.199881 0.199881 yield of CO2 on food
Y_HX mol/mol 0.18364 0.18364 0.182156 0.182156 0.162794 0.162794 0.170469 0.170469 yield of H2O on food
Y_OX mol/mol -0.253151 -0.253151 -0.251106 -0.251106 -0.224415 -0.224415 -0.234995 -0.234995 yield of O2 on food
Y_NX mol/mol 0.0174587 0.0174587 0.0173177 0.0173177 0.0154769 0.0154769 0.0162066 0.0162066 yield of N-waste on food
mu_TX J/mol 154513 154513 153518 153518 140479 140479 145645 145645 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