Strongylocentrotus pallidus: Population traits

at T = 7 °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 - 0.214459 0.254202 0.627101 0.627101 1 1 scaled functional response
r 1/d 0 0 0.00162938 0.000417326 0.00279701 0.000716458 spec pop growth rate
t2 d NaN NaN 425.407 1660.93 247.817 967.464 population doubling time
a_b d 9.81482 9.57342 8.34747 8.34747 7.74846 7.74846 age at birth
t_j d 200.939 169.617 70.1183 70.1183 45.0667 45.0667 time since birth at metam
t_p d 48429.5 28645 7477.92 7477.92 4471.62 4471.62 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.884035 1 0.770475 1 0.686016 survival probability at metam
S_p - 0.999942 0.112606 0.999993 0.111886 0.999997 0.111709 survival probability at puberty
theta_0b - 0.000458606 0.0883128 0.0132326 0.178964 0.0209872 0.240589 frac of ind that is embryo
theta_bj - 0.000470466 0.0851147 0.0133375 0.160427 0.0209931 0.203839 frac of ind between b and j
theta_jp - 0.00916117 0.5662 0.093255 0.455389 0.0949727 0.368226 frac of ind between j and p
theta_pi - 0.98991 0.260373 0.880175 0.20522 0.863047 0.187347 frac of ind that is adult
L_bi cm 0.470616 0.0346955 0.119182 0.0234744 0.110538 0.0229262 mean structural length of post-natals
L2_bi cm^2 0.270201 0.00838917 0.0260653 0.00247797 0.0227324 0.00227636 mean squared structural length of post-natals
L3_bi cm^3 0.16907 0.00464498 0.0082022 0.000961993 0.00684273 0.000866042 mean cubed structural length of post-natals
Ww_bi g 0.190719 0.00535001 0.0112734 0.0013222 0.0109285 0.00138315 mean wet weight of post-natals
L_pi cm 0.475067 0.0924407 0.132029 0.059107 0.12363 0.0575115 mean structural length of adults
L2_pi cm^2 0.272828 0.0290235 0.0292002 0.00949363 0.0257628 0.00879968 mean squared structural length of adults
L3_pi cm^3 0.170715 0.0162598 0.00919521 0.00384341 0.00776183 0.00350512 mean cubed structural length of adults
Ww_pi g 0.192575 0.0187278 0.0126383 0.00528254 0.0123964 0.00559801 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.000584271 2.14345e-05 0.000165249 1.5498e-05 0.000229929 2.26853e-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 0.080875 0.0259043 0.0832396 0.0273517 yield of living structure on food
Y_VX_d mol/mol 0.0277491 0.044409 0.000174152 0.0535659 5.77426e-05 0.055408 yield of dead structure on food
Y_EX mol/mol 0 0 0.0302828 0.00969958 0.0497021 0.0163316 yield of living reserve on food
Y_EX_d mol/mol 0.00355334 0.00674052 6.52095e-05 0.0200572 3.44779e-05 0.0330839 yield of dead reserve on food
Y_CX mol/mol 0.859323 0.839476 0.779228 0.781398 0.757591 0.75845 yield of CO2 on food
Y_HX mol/mol 0.623486 0.609086 0.565373 0.566948 0.549674 0.550297 yield of H2O on food
Y_OX mol/mol -0.934513 -0.91293 -0.84741 -0.84977 -0.82388 -0.824814 yield of O2 on food
Y_NX mol/mol 0.128898 0.125921 0.116884 0.11721 0.113639 0.113767 yield of N-waste on food
mu_TX J/mol 456671 446588 415284 416399 403496 403942 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