Carcharodon carcharias: Population traits

at T = 22 °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 std f_min f_max date: 2025/06/01
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.687501 NaN 0.745689 0.745689 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000377457 0.000377457 7.31196e-05 7.31196e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 1836.36 1836.36 9479.63 9479.63 population doubling time
a_b d 710.992 NaN 709 NaN 702.995 708.795 702.995 708.795 age at birth
t_p d 9479.91 NaN 5290.69 NaN 3160.14 5135.46 3160.14 5135.46 time since birth at puberty
S_b - 0.999998 NaN 0.999998 NaN 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_p - 0.999984 NaN 0.373865 NaN 0.999986 0.999979 0.338124 0.37259 survival probability at puberty
theta_0b - 0.0235357 NaN 0.177996 NaN 0.233349 0.23519 0.364708 0.309685 frac of ind that is embryo
theta_bp - 0.0235344 NaN 0.106174 NaN 0.178949 0.179969 0.198304 0.175861 fraction of individuals that is juvenile
theta_pi - 0.95293 NaN 0.71583 NaN 0.587702 0.584841 0.436988 0.514454 frac of ind that is adult
L_bi cm 23.6481 NaN 23.0261 NaN 20.9546 18.1313 22.1746 19.7475 mean structural length of post-natals
L2_bi cm^2 568.24 NaN 567.13 NaN 501.41 360.907 596.889 438.303 mean squared structural length of post-natals
L3_bi cm^3 13779.6 NaN 14463.5 NaN 13184.6 7690.87 18012.1 10447 mean cubed structural length of post-natals
Ww_bi g 657053 NaN 746810 NaN 908452 400526 1.24108e+06 544061 mean wet weight of post-natals
L_pi cm 23.9753 NaN 24.9402 NaN 24.044 20.5 27.5204 23.042 mean structural length of adults
L2_pi cm^2 579.554 NaN 635.745 NaN 617.68 437.814 817.507 552.476 mean squared structural length of adults
L3_pi cm^3 14090.6 NaN 16445.4 NaN 16787.7 9687.61 25637.7 13643 mean cubed structural length of adults
Ww_pi g 671884 NaN 849148 NaN 1.15671e+06 504512 1.7665e+06 710500 mean wet weight of adults
R 1/d 0 NaN 0.000330916 NaN 0.00032878 0 0.00182008 0 mean reproduction rate of adults
J_X g/d 1240.07 NaN 1342.41 NaN 1591.61 861.757 1894.68 1046.56 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.00312679 0.00336867 0.000695122 0.000729899 yield of living structure on food
Y_VX_d mol/mol 0.000420512 NaN 0.000923667 NaN 1.28224e-05 1.82127e-05 0.00135292 0.00137824 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.212317 0.172065 0.0472007 0.0372818 yield of living reserve on food
Y_EX_d mol/mol 0.0196308 NaN 0.0467692 NaN 0.000870678 0.000930267 0.091867 0.0703979 yield of dead reserve on food
Y_CX mol/mol 0.805281 NaN 0.779712 NaN 0.623725 0.660675 0.693296 0.722274 yield of CO2 on food
Y_HX mol/mol 0.691622 NaN 0.669663 NaN 0.535692 0.567426 0.595443 0.620332 yield of H2O on food
Y_OX mol/mol -0.946749 NaN -0.916689 NaN -0.733299 -0.776739 -0.815091 -0.84916 yield of O2 on food
Y_NX mol/mol 0.065293 NaN 0.0632199 NaN 0.0505723 0.0535682 0.0562132 0.0585628 yield of N-waste on food
mu_TX J/mol 453527 NaN 438602 NaN 347507 369124 388131 405077 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