Sepia officinalis: 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_min f_max date: 2025/05/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.0752542 0.0752542 0.0752542 0.0752542 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.0175068 0.0175068 NaN NaN spec pop growth rate
t2 d NaN NaN NaN NaN 39.5929 39.5929 NaN NaN population doubling time
a_b d 33.5341 33.4978 33.5341 33.4978 23.8031 23.792 NaN 23.792 age at birth
t_j d 113.598 112.904 113.598 112.904 21.9176 21.8748 NaN 21.8748 time since birth at metam
t_p d 2702.32 2651.43 2702.32 2651.43 258.337 257.789 NaN 257.789 time since birth at puberty
S_b - 0.995889 0.995926 0.995889 0.995926 0.998332 0.998345 NaN 0.998345 survival probability at birth
S_j - 0.977308 0.977532 0.529763 0.528222 0.993928 0.993984 NaN 0.122282 survival probability at metam
S_p - 0.898635 0.900359 0.112894 0.113092 0.993498 0.99355 NaN 0.108537 survival probability at puberty
theta_0b - 0.076888 0.076514 0.365404 0.366199 0.34611 0.345943 NaN 0.650213 frac of ind that is embryo
theta_bj - 0.0762155 0.0758528 0.271121 0.271354 0.212947 0.212631 NaN 0.251213 frac of ind between b and j
theta_jp - 0.173206 0.171299 0.236771 0.235298 0.0147434 0.0150005 NaN 0.0061028 frac of ind between j and p
theta_pi - 0.673691 0.676334 0.126704 0.12715 0.4262 0.426425 NaN 0.0924716 frac of ind that is adult
L_bi cm 0.937953 0.944817 0.440815 0.441877 1.08184 1.08386 NaN 0.674881 mean structural length of post-natals
L2_bi cm^2 1.1379 1.15532 0.264896 0.266919 1.92769 1.93577 NaN 1.35839 mean squared structural length of post-natals
L3_bi cm^3 1.63432 1.67241 0.230913 0.234466 4.9623 4.99556 NaN 6.5409 mean cubed structural length of post-natals
Ww_bi g 2.37625 2.43646 0.33574 0.341584 34.8971 35.3231 NaN 46.25 mean wet weight of post-natals
L_pi cm 1.14668 1.15333 0.868883 0.871493 1.45612 1.45879 NaN 1.60202 mean structural length of adults
L2_pi cm^2 1.5053 1.5243 0.863282 0.869706 2.8761 2.88764 NaN 4.79912 mean squared structural length of adults
L3_pi cm^3 2.21766 2.26208 0.98984 1.00298 7.57928 7.62816 NaN 24.6151 mean cubed structural length of adults
Ww_pi g 3.2244 3.29553 1.43919 1.46121 53.3009 53.9379 NaN 174.051 mean wet weight of adults
R 1/d 0 0 0 0 0 0 NaN 1.03486 mean reproduction rate of adults
J_X g/d 0.0434339 0.0443906 0.0090861 0.00922407 0.986659 0.997147 NaN 0.690224 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.0875 0.0875 0.0875 0.0875 0.0875 0.0875 NaN 0.0875 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.0880488 0.0877066 NaN -0.00243088 yield of living structure on food
Y_VX_d mol/mol 0.19241 0.192093 0.253486 0.252913 0.00667141 0.00660708 NaN 0.0942011 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.53115 0.532458 NaN -0.0147576 yield of living reserve on food
Y_EX_d mol/mol 0.087348 0.0877597 0.115074 0.115546 0.0402449 0.0401109 NaN 0.571885 yield of dead reserve on food
Y_CX mol/mol 0.632742 0.632647 0.54394 0.544042 0.246385 0.245618 NaN 0.263602 yield of CO2 on food
Y_HX mol/mol 0.454871 0.454803 0.391032 0.391105 0.177123 0.176572 NaN 0.189501 yield of H2O on food
Y_OX mol/mol -0.688107 -0.688004 -0.591535 -0.591645 -0.267944 -0.267109 NaN -0.286668 yield of O2 on food
Y_NX mol/mol 0.0949113 0.0948971 0.081591 0.0816062 0.0369577 0.0368427 NaN 0.0395404 yield of N-waste on food
mu_TX J/mol 338753 338686 292966 292993 121373 120930 NaN 130695 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