Octopus vulgaris: Population traits

at T = 20 °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: 2025/03/24
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - NaN NaN NaN NaN 1 1 scaled functional response
r 1/d 0 0 NaN NaN 0.00232257 6.72914e-06 spec pop growth rate
t2 d NaN NaN NaN NaN 298.44 103007 population doubling time
a_b d NaN NaN NaN NaN 9.09821 9.09821 age at birth
t_j d NaN NaN NaN NaN 107.152 107.152 time since birth at metam
t_p d NaN NaN NaN NaN 181.584 181.584 time since birth at puberty
S_b - NaN NaN NaN NaN 1 1 survival probability at birth
S_j - NaN NaN NaN NaN 1 0.356799 survival probability at metam
S_p - NaN NaN NaN NaN 1 5.35664e-06 survival probability at puberty
theta_0b - NaN NaN NaN NaN 0.0504419 0.506579 frac of ind that is embryo
theta_bj - NaN NaN NaN NaN 0.049578 0.317379 frac of ind between b and j
theta_jp - NaN NaN NaN NaN 0.472808 0.176038 frac of ind between j and p
theta_pi - NaN NaN NaN NaN 0.427172 4.51871e-06 frac of ind that is adult
L_bi cm NaN NaN NaN NaN 3.49061 0.0617973 mean structural length of post-natals
L2_bi cm^2 NaN NaN NaN NaN 26.7086 0.00511813 mean squared structural length of post-natals
L3_bi cm^3 NaN NaN NaN NaN 240.57 0.00130745 mean cubed structural length of post-natals
Ww_bi g NaN NaN NaN NaN 331.329 0.00180071 mean wet weight of post-natals
L_pi cm NaN NaN NaN NaN 7.10641 3.48142 mean structural length of adults
L2_pi cm^2 NaN NaN NaN NaN 58.6094 12.8487 mean squared structural length of adults
L3_pi cm^3 NaN NaN NaN NaN 533.579 50.1692 mean cubed structural length of adults
Ww_pi g NaN NaN NaN NaN 734.881 69.0965 mean wet weight of adults
R 1/d NaN NaN NaN NaN 559.899 80.4058 mean reproduction rate of adults
J_X g/d NaN NaN NaN NaN 14.0804 0.000253019 mean ingestion rate of wet food by post-natals
Y_PX mol/mol NaN NaN NaN NaN 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol NaN NaN NaN NaN 0.0396822 3.47721e-05 yield of living structure on food
Y_VX_d mol/mol NaN NaN NaN NaN 0.4517 0.461845 yield of dead structure on food
Y_EX mol/mol NaN NaN NaN NaN 0.0149709 1.31184e-05 yield of living reserve on food
Y_EX_d mol/mol NaN NaN NaN NaN 0.170412 0.17424 yield of dead reserve on food
Y_CX mol/mol NaN NaN NaN NaN 0.21386 0.254492 yield of CO2 on food
Y_HX mol/mol NaN NaN NaN NaN 0.153742 0.182951 yield of H2O on food
Y_OX mol/mol NaN NaN NaN NaN -0.232573 -0.27676 yield of O2 on food
Y_NX mol/mol NaN NaN NaN NaN 0.032079 0.0381738 yield of N-waste on food
mu_TX J/mol NaN NaN NaN NaN 124848 145721 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