Sphyrna lewini: Population traits

at T = 27.2 °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: 2023/03/16
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.878709 0.878709 0.901897 0.901897 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000600467 0.000600467 0.000162991 0.000162991 spec pop growth rate
t2 d NaN NaN NaN NaN 1154.35 1154.35 4252.68 4252.68 population doubling time
a_b d 314.674 314.674 314.674 314.674 314.674 314.674 314.674 314.674 age at birth
t_p d 13135.1 2389.77 7752.64 2313.48 4814.64 2070.02 4814.64 2070.02 time since birth at puberty
S_b - 0.999995 0.999995 0.999995 0.999995 0.999995 0.999995 0.999995 0.999995 survival probability at birth
S_p - 0.999969 0.99997 0.386968 0.384578 0.99997 0.99997 0.373274 0.371122 survival probability at puberty
theta_0b - 0.0199215 0.0197758 0.252348 0.255254 0.172632 0.17262 0.382197 0.3848 frac of ind that is embryo
theta_bp - 0.0199212 0.0197755 0.155271 0.156586 0.142908 0.142898 0.220448 0.221333 fraction of individuals that is juvenile
theta_pi - 0.960157 0.960449 0.592381 0.588161 0.68446 0.684482 0.397354 0.393867 frac of ind that is adult
L_bi cm 15.6605 15.9127 11.7984 11.903 10.0406 10.1247 8.92478 8.95617 mean structural length of post-natals
L2_bi cm^2 256.045 264.513 171.503 175.466 120.598 122.944 108.174 109.565 mean squared structural length of post-natals
L3_bi cm^3 4277.74 4493.98 2748.64 2857.39 1636.67 1689.54 1597.72 1639.55 mean cubed structural length of post-natals
Ww_bi g 49515.2 52845.6 32582.8 34411.8 21333.7 22376.7 20826 21714.8 mean wet weight of post-natals
L_pi cm 15.8984 16.1538 13.8291 13.9919 11.2562 11.3562 11.6153 11.6961 mean structural length of adults
L2_pi cm^2 260.986 269.59 212.073 217.715 141.99 144.81 158.786 161.585 mean squared structural length of adults
L3_pi cm^3 4364.88 4584.91 3450.67 3599.3 1961.8 2025.57 2444.24 2520.32 mean cubed structural length of adults
Ww_pi g 50523.9 53914.7 40904.7 43346.7 25571.6 26827.3 31860.2 33379.9 mean wet weight of adults
R 1/d 0 0.0549225 0 0.0341283 0 0.00317427 0 0.0121277 mean reproduction rate of adults
J_X g/d 108.434 113.971 74.5476 77.5984 58.1229 60.2852 52.1349 53.7245 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 0.0169085 0.0168285 0.00499501 0.00497412 yield of living structure on food
Y_VX_d mol/mol 0.00325133 0.00323223 0.00706856 0.00703066 0.000167983 0.000164488 0.00990839 0.00987144 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.20349 0.206054 0.0601139 0.0609047 yield of living reserve on food
Y_EX_d mol/mol 0.0343831 0.0347762 0.0767231 0.0776403 0.00202164 0.00201405 0.119245 0.120869 yield of dead reserve on food
Y_CX mol/mol 0.789016 0.78867 0.746321 0.745508 0.617934 0.615647 0.644135 0.641955 yield of CO2 on food
Y_HX mol/mol 0.677654 0.677356 0.640984 0.640286 0.530718 0.528754 0.553221 0.551349 yield of H2O on food
Y_OX mol/mol -0.927627 -0.927221 -0.877431 -0.876475 -0.72649 -0.723801 -0.757294 -0.754731 yield of O2 on food
Y_NX mol/mol 0.0639743 0.0639462 0.0605125 0.0604466 0.0501028 0.0499173 0.0522272 0.0520504 yield of N-waste on food
mu_TX J/mol 444159 443956 419385 418908 344818 343476 360029 358752 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