Sardinops sagax: 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: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.115461 0.115461 0.557731 0.557731 1 1 scaled functional response
r 1/d 0 0 0.0415288 0.00884382 0.0444996 0.00814302 spec pop growth rate
t2 d NaN NaN 16.6907 78.3765 15.5765 85.1217 population doubling time
a_b d 5.50946 5.50946 5.14886 5.14886 5.10128 5.10128 age at birth
t_j d 0.0122321 0.0122321 0.00919753 0.00919753 0.00885302 0.00885302 time since birth at metam
t_p d 842.39 842.39 138.833 138.833 124.232 124.232 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.995302 1 0.995057 1 0.995031 survival probability at metam
S_p - 1 0.353055 1 0.271551 1 0.261706 survival probability at puberty
theta_0b - 0.000595487 0.0541092 0.192399 0.512488 0.202965 0.521248 frac of ind that is embryo
theta_bj - 1.32333e-06 0.000119963 0.000308415 0.00089324 0.000313935 0.000884416 frac of ind between b and j
theta_jp - 0.00059472 0.0318246 0.155164 0.254986 0.161551 0.255773 frac of ind between j and p
theta_pi - 0.998808 0.913946 0.652129 0.231632 0.63517 0.222094 frac of ind that is adult
L_bi cm 0.296107 0.278604 0.146468 0.0910022 0.148205 0.0928145 mean structural length of post-natals
L2_bi cm^2 0.0879559 0.0816057 0.0330484 0.0195581 0.0348059 0.0223034 mean squared structural length of post-natals
L3_bi cm^3 0.0261595 0.024164 0.0101789 0.00880178 0.0114948 0.0126398 mean cubed structural length of post-natals
Ww_bi g 0.115351 0.106551 0.17782 0.153763 0.35093 0.385888 mean wet weight of post-natals
L_pi cm 0.29626 0.28703 0.171249 0.147324 0.175006 0.153402 mean structural length of adults
L2_pi cm^2 0.0880074 0.0844076 0.0404817 0.0393312 0.043187 0.0461216 mean squared structural length of adults
L3_pi cm^3 0.0261751 0.0250066 0.0125854 0.0184463 0.0144016 0.0271617 mean cubed structural length of adults
Ww_pi g 0.115419 0.110267 0.21986 0.322248 0.439674 0.829233 mean wet weight of adults
R 1/d 1.7363 1.40569 0 0.0993041 0 0.514179 mean reproduction rate of adults
J_X g/d 0.00691623 0.0064169 0.0125539 0.00742943 0.0237062 0.0151908 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 0.033672 0.0104774 0.0215773 0.00677558 yield of living structure on food
Y_VX_d mol/mol 0.000415012 0.00115122 3.41392e-09 0.0195847 1.80668e-09 0.0128467 yield of dead structure on food
Y_EX mol/mol 0 0 0.554562 0.172558 0.637166 0.20008 yield of living reserve on food
Y_EX_d mol/mol 0.00141499 0.00392511 5.62256e-08 0.32255 5.33503e-08 0.379357 yield of dead reserve on food
Y_CX mol/mol 0.888795 0.885549 0.302391 0.365455 0.231882 0.291566 yield of CO2 on food
Y_HX mol/mol 0.639439 0.637103 0.217554 0.262924 0.166826 0.209766 yield of H2O on food
Y_OX mol/mol -0.966565 -0.963034 -0.32885 -0.397432 -0.252172 -0.317078 yield of O2 on food
Y_NX mol/mol 0.133319 0.132832 0.0453587 0.0548182 0.0347823 0.043735 yield of N-waste on food
mu_TX J/mol 471514 469766 150655 185159 111270 143999 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