Carcharhinus brachyurus: Population traits

at T = 17.4 °C with background hazards for embryo, juv, adult: 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 stf f_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.492717 0.492717 0.600847 0.600847 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000471859 0.000471859 0.000104367 0.000104367 spec pop growth rate
t2 d NaN NaN NaN NaN 1468.97 1468.97 6641.44 6641.44 population doubling time
a_b d 777.246 777.247 777.246 777.247 777.246 777.247 777.246 777.247 age at birth
t_p d 10142.6 9354.49 5914.06 5725.44 3357.37 3312.47 3357.37 3312.47 time since birth at puberty
S_b - 0.999825 0.999828 0.999826 0.999829 0.999828 0.999831 0.999828 0.999831 survival probability at birth
S_p - 0.998835 0.998863 0.527401 0.522588 0.999021 0.999043 0.420141 0.417071 survival probability at puberty
theta_0b - 0.055118 0.0546197 0.227174 0.229858 0.3096 0.309537 0.397963 0.40042 frac of ind that is embryo
theta_bp - 0.0550898 0.0545924 0.163404 0.164573 0.214456 0.214414 0.237026 0.237638 fraction of individuals that is juvenile
theta_pi - 0.889792 0.890788 0.609422 0.605569 0.475944 0.476049 0.365011 0.361942 frac of ind that is adult
L_bi cm 14.4158 14.653 14.0732 14.221 13.9059 14.0059 14.1472 14.2136 mean structural length of post-natals
L2_bi cm^2 215.897 223.285 220.791 226.277 225.103 228.936 251.059 254.577 mean squared structural length of post-natals
L3_bi cm^3 3320.19 3495.66 3740.18 3895.9 4155.08 4275.59 5363.66 5509.65 mean cubed structural length of post-natals
Ww_bi g 9729.97 10371.5 12545.4 13240.6 20435.4 21344 26379.3 27504.5 mean wet weight of post-natals
L_pi cm 14.8421 15.0882 15.8027 16.0096 16.4836 16.6197 18.1287 18.274 mean structural length of adults
L2_pi cm^2 225.733 233.454 264.277 271.77 295.88 301.273 371.706 378.717 mean squared structural length of adults
L3_pi cm^3 3498.85 3683.02 4621.21 4830.28 5768.8 5941.1 8496.19 8770.7 mean cubed structural length of adults
Ww_pi g 10253.6 10927.4 15500.5 16416.2 28371.9 29658.3 41785.6 43783.8 mean wet weight of adults
R 1/d 0 0 0.00051411 0.000650083 0.00135732 0.00144031 0.00261452 0.00273013 mean reproduction rate of adults
J_X g/d 13.6815 14.4165 17.0622 17.8159 28.9515 29.9997 32.2898 33.3597 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.0677206 0.0672499 0.0173364 0.0172372 yield of living structure on food
Y_VX_d mol/mol 0.0254366 0.0252603 0.0440381 0.0438222 0.00237319 0.00231768 0.0437137 0.0434208 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.26534 0.268465 0.0679269 0.0688116 yield of living reserve on food
Y_EX_d mol/mol 0.0491064 0.0496858 0.103675 0.105112 0.00929854 0.00925231 0.171277 0.173338 yield of dead reserve on food
Y_CX mol/mol 0.754876 0.754503 0.687193 0.686064 0.504951 0.50259 0.546093 0.543731 yield of CO2 on food
Y_HX mol/mol 0.648332 0.648012 0.590202 0.589232 0.433681 0.431654 0.469017 0.466988 yield of H2O on food
Y_OX mol/mol -0.887489 -0.887051 -0.807917 -0.806588 -0.593658 -0.590883 -0.642028 -0.639252 yield of O2 on food
Y_NX mol/mol 0.0612062 0.0611759 0.0557184 0.0556268 0.0409419 0.0407505 0.0442778 0.0440863 yield of N-waste on food
mu_TX J/mol 425306 425079 386662 385991 281407 280000 305011 303610 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