Birgus latro: Population traits

at T = 10 °C with background hazards for embryo, larva, 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 abj f_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.348193 0.348193 0.348302 0.348302 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000729222 0.000729222 0.000148096 0.000148096 spec pop growth rate
t2 d NaN NaN NaN NaN 950.529 950.529 4680.38 4680.38 population doubling time
a_b d 84.7514 78.9583 84.747 78.9541 71.0136 66.2293 71.0136 66.2293 age at birth
t_j d 455.449 305.259 455.311 305.171 174.847 124.091 174.847 124.091 time since birth at metam
t_p d 114611 28601.8 114444 28587 12630.5 8318.85 12630.5 8318.85 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_j - 1 1 0.712811 0.623398 1 1 0.474966 0.375439 survival probability at metam
S_p - 1 1 0.162215 0.160966 1 1 0.159916 0.159527 survival probability at puberty
theta_0b - 3.53922e-05 2.86611e-05 0.0824537 0.131759 0.0502854 0.046978 0.372538 0.435803 frac of ind that is embryo
theta_bj - 3.55768e-05 2.8796e-05 0.0703118 0.105496 0.047929 0.0449332 0.261144 0.276409 frac of ind between b and j
theta_jp - 0.000155611 8.25316e-05 0.134801 0.129539 0.0657599 0.0375187 0.154798 0.0946638 frac of ind between j and p
theta_pi - 0.999773 0.99986 0.712433 0.633205 0.836026 0.87057 0.211519 0.193123 frac of ind that is adult
L_bi cm 3.22188 4.94226 2.15208 2.9181 0.634163 0.876317 0.196358 0.209714 mean structural length of post-natals
L2_bi cm^2 10.4191 24.5085 6.75896 14.0544 0.70157 1.37445 0.151006 0.210035 mean squared structural length of post-natals
L3_bi cm^3 33.7373 121.677 21.7819 69.4791 1.09721 3.06297 0.352538 0.701939 mean cubed structural length of post-natals
Ww_bi g 37.2282 140.927 24.0364 80.4743 1.42327 4.45463 0.457304 1.02087 mean wet weight of post-natals
L_pi cm 3.22248 4.9428 2.74637 3.96859 0.70738 0.950222 0.409544 0.443564 mean structural length of adults
L2_pi cm^2 10.4211 24.5113 8.70261 19.2682 0.795689 1.50372 0.432298 0.598285 mean squared structural length of adults
L3_pi cm^3 33.7437 121.691 28.0527 95.2683 1.24628 3.35297 1.04433 2.04923 mean cubed structural length of adults
Ww_pi g 37.2353 140.943 30.9564 110.345 1.61665 4.8764 1.35467 2.98031 mean wet weight of adults
R 1/d 0 9.14366 0 6.4238 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.011472 0.0413643 0.00744382 0.0237268 0.00222833 0.00668133 0.000475169 0.0010141 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 0.359062 0.334302 0.109876 0.102509 yield of living structure on food
Y_VX_d mol/mol 0.00125201 0.00108649 0.00370104 0.00321467 1.55738e-09 9.48379e-10 0.218609 0.204306 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.106704 0.151891 0.0326524 0.046575 yield of living reserve on food
Y_EX_d mol/mol 0.00012955 0.000171885 0.000383083 0.000508726 4.62813e-10 4.30897e-10 0.0649651 0.0928266 yield of dead reserve on food
Y_CX mol/mol 0.889243 0.889367 0.886541 0.886902 0.424859 0.404432 0.464523 0.444409 yield of CO2 on food
Y_HX mol/mol 0.641243 0.641332 0.639294 0.639555 0.306371 0.29164 0.334973 0.320468 yield of H2O on food
Y_OX mol/mol -0.967052 -0.967186 -0.964113 -0.964505 -0.462034 -0.43982 -0.505169 -0.483295 yield of O2 on food
Y_NX mol/mol 0.133387 0.133405 0.132981 0.133035 0.0637289 0.0606648 0.0696785 0.0666613 yield of N-waste on food
mu_TX J/mol 471803 471862 470439 470613 234282 221809 254568 242422 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