Mesocentrotus franciscanus: Population traits

at T = 16 °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 - 0.158308 0.158308 0.579154 0.579154 1 1 scaled functional response
r 1/d 0 0 0.000131113 0.00034045 0.000268538 0.00137169 spec pop growth rate
t2 d NaN NaN 5286.64 2035.97 2581.19 505.323 population doubling time
a_b d 4.18581 4.18581 3.47787 3.47787 3.19206 3.19206 age at birth
t_j d 677.452 677.452 172.347 172.347 100.563 100.563 time since birth at metam
t_p d 6459.74 6459.74 795.263 795.263 444.28 444.28 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.947824 1 0.838323 1 0.757515 survival probability at metam
S_p - 1 0.000171239 1 0.000160206 1 0.000158685 survival probability at puberty
theta_0b - 4.34482e-06 0.0478916 0.000499453 0.149606 0.00108883 0.218997 frac of ind that is embryo
theta_bj - 4.42741e-06 0.0475175 0.000503954 0.138294 0.0010966 0.191922 frac of ind between b and j
theta_jp - 0.000712127 0.863039 0.0241952 0.711731 0.0330032 0.588792 frac of ind between j and p
theta_pi - 0.999279 0.0415517 0.974801 0.000369019 0.964811 0.000288949 frac of ind that is adult
L_bi cm 1.72661 0.0925019 5.1266 0.0186605 6.63783 0.0185259 mean structural length of post-natals
L2_bi cm^2 2.98507 0.129623 29.5485 0.000734304 54.8225 0.000637012 mean squared structural length of post-natals
L3_bi cm^3 5.16228 0.223347 176.635 0.000509055 488.892 0.000332692 mean cubed structural length of post-natals
Ww_bi g 5.23074 0.226309 185.204 0.000533751 529.845 0.000360561 mean wet weight of post-natals
L_pi cm 1.7278 1.71554 5.25464 0.649087 6.86984 0.595915 mean structural length of adults
L2_pi cm^2 2.98721 2.96073 30.297 0.708182 56.7598 0.582301 mean squared structural length of adults
L3_pi cm^3 5.16599 5.11738 181.11 1.13619 506.171 0.857158 mean cubed structural length of adults
Ww_pi g 5.23449 5.18525 189.897 1.19131 548.572 0.92896 mean wet weight of adults
R 1/d 203.776 193.797 40784.8 52.8442 130509 419.448 mean reproduction rate of adults
J_X g/d 0.0203245 0.000880242 0.752511 9.62277e-06 2.41868 1.25192e-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 0.0307758 0.0180102 0.0542801 0.0364522 yield of living structure on food
Y_VX_d mol/mol 0.000269617 0.000711337 0.00500569 0.275463 0.039564 0.30982 yield of dead structure on food
Y_EX mol/mol 0 0 0.00149306 0.000873745 0.00454688 0.00305349 yield of living reserve on food
Y_EX_d mol/mol 3.57538e-06 9.43301e-06 0.000242846 0.0133638 0.00331416 0.0259527 yield of dead reserve on food
Y_CX mol/mol 0.890352 0.889904 0.853108 0.582915 0.78892 0.515347 yield of CO2 on food
Y_HX mol/mol 0.646 0.645675 0.618977 0.422937 0.572405 0.373913 yield of H2O on food
Y_OX mol/mol -0.968258 -0.967771 -0.927755 -0.63392 -0.85795 -0.56044 yield of O2 on food
Y_NX mol/mol 0.133553 0.133486 0.127966 0.0874372 0.118338 0.0773021 yield of N-waste on food
mu_TX J/mol 472363 472139 453655 317933 421254 283411 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