Carcharhinus signatus: Population traits

at T = 21.7 °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 - 0.697338 0.697338 0.864581 0.864581 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000712918 0.000712918 8.18673e-05 8.18673e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 972.268 972.268 8466.72 8466.72 population doubling time
a_b d 329.213 329.213 329.213 329.213 329.213 329.213 329.213 329.213 age at birth
t_p d 5556.36 3307.55 2871.43 2219.05 2328.67 1873.89 2328.67 1873.89 time since birth at puberty
S_b - 0.999904 0.999904 0.999904 0.999905 0.999905 0.999905 0.999905 0.999905 survival probability at birth
S_p - 0.999407 0.99941 0.445507 0.444854 0.999454 0.999456 0.419487 0.418917 survival probability at puberty
theta_0b - 0.0446237 0.0445539 0.273079 0.273585 0.212909 0.212892 0.333986 0.334484 frac of ind that is embryo
theta_bp - 0.0446119 0.0445421 0.180437 0.180639 0.168329 0.168316 0.208914 0.209086 fraction of individuals that is juvenile
theta_pi - 0.910764 0.910904 0.546484 0.545776 0.618762 0.618792 0.4571 0.456431 frac of ind that is adult
L_bi cm 18.0983 18.1531 16.0031 16.0294 15.306 15.3315 15.4884 15.5072 mean structural length of post-natals
L2_bi cm^2 345.184 347.339 307.374 308.657 273.432 274.48 302.265 303.291 mean squared structural length of post-natals
L3_bi cm^3 6799.1 6864.02 6624.4 6671.93 5491.94 5526.71 6901.51 6944.12 mean cubed structural length of post-natals
Ww_bi g 24211.1 24502.6 27657.6 27928.8 25660.7 25892.8 32246.8 32533.4 mean wet weight of post-natals
L_pi cm 18.6223 18.6787 18.8394 18.8805 17.378 17.4093 19.1355 19.1701 mean structural length of adults
L2_pi cm^2 359.382 361.616 390.47 392.366 331.485 332.797 414.237 415.971 mean squared structural length of adults
L3_pi cm^3 7111.69 7179.21 8671.56 8739.61 6856.59 6900.48 9853.01 9921.68 mean cubed structural length of adults
Ww_pi g 25324.2 25627.7 36204.7 36584.1 32036.9 32329 46037.4 46483.4 mean wet weight of adults
R 1/d 0 0.000650182 0 0.00266001 0 0.000976166 0.00124115 0.0039036 mean reproduction rate of adults
J_X g/d 64.0048 64.6256 70.6628 71.2015 72.7056 73.2348 80.3725 80.9219 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 0.0538514 0.0538008 0.00702987 0.00702524 yield of living structure on food
Y_VX_d mol/mol 0.0217601 0.0217332 0.0393334 0.0392886 0.00341209 0.00339945 0.0392473 0.0391997 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.197765 0.198258 0.0258167 0.0258882 yield of living reserve on food
Y_EX_d mol/mol 0.055726 0.055848 0.124888 0.125174 0.0125306 0.0125271 0.144133 0.144452 yield of dead reserve on food
Y_CX mol/mol 0.752153 0.752066 0.671923 0.671701 0.576336 0.575942 0.623818 0.623505 yield of CO2 on food
Y_HX mol/mol 0.645994 0.645918 0.577087 0.576896 0.494991 0.494653 0.535772 0.535503 yield of H2O on food
Y_OX mol/mol -0.884289 -0.884185 -0.789964 -0.789702 -0.677584 -0.677121 -0.733408 -0.73304 yield of O2 on food
Y_NX mol/mol 0.0609854 0.0609783 0.0544803 0.0544622 0.0467299 0.046698 0.0505799 0.0505545 yield of N-waste on food
mu_TX J/mol 423530 423478 377498 377366 322504 322271 349718 349533 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