Astropecten irregularis: Population traits

at T = 14 °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_minf f_max date: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.319105 0.376845 0.688423 0.688423 1 1 scaled functional response
r 1/d 0 0 0.0111951 0.00173688 0.0183313 0.00287003 spec pop growth rate
t2 d NaN NaN 61.9154 399.075 37.8122 241.512 population doubling time
a_b d 7.30366 7.10715 6.42399 6.42399 6.03982 6.03982 age at birth
t_j d 120.056 101.848 57.6561 57.6561 41.4835 41.4835 time since birth at metam
t_p d 4804.93 2526.15 960.361 960.361 632.263 632.263 time since birth at puberty
S_b - 0.999998 0.999998 0.999998 0.999998 0.999999 0.999999 survival probability at birth
S_j - 0.999986 0.708112 0.999991 0.575474 0.999992 0.485418 survival probability at metam
S_p - 0.999367 0.00710882 0.999854 0.00701737 0.999923 0.00698441 survival probability at puberty
theta_0b - 0.00283761 0.252657 0.0692441 0.358611 0.104492 0.424053 frac of ind that is embryo
theta_bj - 0.00284951 0.214505 0.0646207 0.273392 0.0938748 0.298153 frac of ind between b and j
theta_jp - 0.0439777 0.515139 0.378237 0.357027 0.383099 0.268476 frac of ind between j and p
theta_pi - 0.950335 0.0176989 0.487898 0.0109689 0.418534 0.00931803 frac of ind that is adult
L_bi cm 0.769978 0.0287482 0.154507 0.0250452 0.13072 0.0246636 mean structural length of post-natals
L2_bi cm^2 0.713383 0.00548715 0.0526376 0.00236341 0.0391745 0.00209448 mean squared structural length of post-natals
L3_bi cm^3 0.70853 0.00468982 0.0263017 0.00166932 0.0178642 0.00144486 mean cubed structural length of post-natals
Ww_bi g 0.786571 0.00529985 0.0325515 0.00206599 0.0240304 0.00194357 mean wet weight of post-natals
L_pi cm 0.806051 0.320596 0.263072 0.22692 0.240493 0.216375 mean structural length of adults
L2_pi cm^2 0.748448 0.20938 0.0990484 0.107562 0.082147 0.097127 mean squared structural length of adults
L3_pi cm^3 0.743438 0.197352 0.0501057 0.0966899 0.0381384 0.0883363 mean cubed structural length of adults
Ww_pi g 0.825324 0.223022 0.0620118 0.119665 0.0513025 0.118827 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.0079605 6.82046e-05 0.00126914 4.9465e-05 0.00137102 6.24814e-05 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 0.232006 0.0586157 0.238856 0.0663684 yield of living structure on food
Y_VX_d mol/mol 0.0661082 0.119007 0.000572973 0.14712 0.000203287 0.155108 yield of dead structure on food
Y_EX mol/mol 0 0 0.0551294 0.0139283 0.0824449 0.0229082 yield of living reserve on food
Y_EX_d mol/mol 0.00728144 0.0154797 0.00013615 0.0349588 7.01679e-05 0.0535381 yield of dead reserve on food
Y_CX mol/mol 0.817235 0.756139 0.60278 0.636002 0.569051 0.592702 yield of CO2 on food
Y_HX mol/mol 0.59295 0.548621 0.437351 0.461455 0.412878 0.430038 yield of H2O on food
Y_OX mol/mol -0.888744 -0.822301 -0.655524 -0.691652 -0.618843 -0.644564 yield of O2 on food
Y_NX mol/mol 0.122585 0.113421 0.090417 0.0954003 0.0853576 0.0889053 yield of N-waste on food
mu_TX J/mol 435441 404483 325814 342744 307587 319716 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