Engraulis ringens: Population traits

at T = 18 °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: 2025/05/23
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.326601 0.371031 0.685516 0.685516 1 1 scaled functional response
r 1/d 0 0 0.0167291 0.00246072 0.0220023 0.00298881 spec pop growth rate
t2 d NaN NaN 41.4335 281.685 31.5035 231.914 population doubling time
a_b d 7.14467 7.05178 6.69981 6.69981 6.55004 6.55004 age at birth
t_j d 1.20162 1.13348 0.90673 0.90673 0.823811 0.823811 time since birth at metam
t_p d 1649.14 831.43 307.877 307.877 239.248 239.248 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.740644 0.999999 0.735818 1 0.734156 survival probability at metam
S_p - 0.999998 0.324308 0.999998 0.272247 0.999998 0.251533 survival probability at puberty
theta_0b - 0.0056971 0.315794 0.106004 0.470475 0.134174 0.503529 frac of ind that is embryo
theta_bj - 0.000958696 0.0438718 0.0134613 0.0543511 0.0155537 0.0539087 frac of ind between b and j
theta_jp - 0.00474157 0.129572 0.0813477 0.178772 0.100661 0.185283 frac of ind between j and p
theta_pi - 0.988603 0.510763 0.799187 0.296401 0.749611 0.257279 frac of ind that is adult
L_bi cm 0.61758 0.366118 0.369578 0.230267 0.349435 0.216025 mean structural length of post-natals
L2_bi cm^2 0.397151 0.220451 0.198958 0.134882 0.187133 0.133648 mean squared structural length of post-natals
L3_bi cm^3 0.259712 0.153601 0.134246 0.127729 0.131957 0.154555 mean cubed structural length of post-natals
Ww_bi g 0.644743 0.412297 0.551983 0.525188 0.730941 0.856118 mean wet weight of post-natals
L_pi cm 0.620728 0.46692 0.404346 0.354597 0.391453 0.3485 mean structural length of adults
L2_pi cm^2 0.399411 0.293645 0.221846 0.236742 0.215161 0.252696 mean squared structural length of adults
L3_pi cm^3 0.261208 0.20564 0.150114 0.227866 0.152332 0.297834 mean cubed structural length of adults
Ww_pi g 0.648455 0.55198 0.617228 0.936922 0.843807 1.64978 mean wet weight of adults
R 1/d 0 0 0 0 0 0.180756 mean reproduction rate of adults
J_X g/d 0.0226887 0.0143165 0.023925 0.016218 0.0328512 0.0234591 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 0.0938688 0.0193801 0.0883785 0.0196911 yield of living structure on food
Y_VX_d mol/mol 0.0110604 0.0270209 9.06932e-05 0.042029 4.04347e-05 0.0409063 yield of dead structure on food
Y_EX mol/mol 0 0 0.292094 0.0603056 0.401172 0.089383 yield of living reserve on food
Y_EX_d mol/mol 0.0163973 0.0455088 0.000282213 0.130783 0.000183543 0.185684 yield of dead reserve on food
Y_CX mol/mol 0.863167 0.818095 0.504289 0.638128 0.40085 0.554961 yield of CO2 on food
Y_HX mol/mol 0.621001 0.588574 0.362808 0.459097 0.288389 0.399263 yield of H2O on food
Y_OX mol/mol -0.938694 -0.889679 -0.548414 -0.693964 -0.435924 -0.60352 yield of O2 on food
Y_NX mol/mol 0.129475 0.122714 0.0756433 0.0957191 0.0601275 0.0832441 yield of N-waste on food
mu_TX J/mol 457951 433960 264713 336697 207545 290914 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