Triakis megalopterus: Population traits

at T = 19.3 °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: 2025/05/23
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.595104 0.595104 0.639515 0.639515 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00092012 0.00092012 0.000305065 0.000305065 spec pop growth rate
t2 d NaN NaN NaN NaN 753.323 753.323 2272.13 2272.13 population doubling time
a_b d 399.671 399.805 395.24 395.368 371.315 371.415 371.315 371.415 age at birth
t_p d 4082.32 1095.46 2683.44 952.558 1086.69 536.219 1086.69 536.219 time since birth at puberty
S_b - 0.999957 0.999957 0.999959 0.999958 0.999966 0.999965 0.999966 0.999965 survival probability at birth
S_p - 0.99969 0.999689 0.628757 0.629514 0.999787 0.999786 0.497454 0.497962 survival probability at puberty
theta_0b - 0.0381608 0.0382099 0.11846 0.118236 0.290132 0.2902 0.346568 0.346217 frac of ind that is embryo
theta_bp - 0.0381739 0.038223 0.0929849 0.0928664 0.206191 0.20622 0.217137 0.21702 fraction of individuals that is juvenile
theta_pi - 0.923665 0.923567 0.788556 0.788898 0.503677 0.50358 0.436295 0.436763 frac of ind that is adult
L_bi cm 5.74904 5.73769 5.81523 5.80548 5.88472 5.87833 6.11546 6.11053 mean structural length of post-natals
L2_bi cm^2 33.5006 33.3663 34.8948 34.7714 37.8883 37.7958 42.3238 42.2371 mean squared structural length of post-natals
L3_bi cm^3 197.15 195.953 214.148 212.968 263.758 262.702 323.979 322.804 mean cubed structural length of post-natals
Ww_bi g 446.56 443.32 505.279 501.879 824.456 819.965 1012.69 1007.56 mean wet weight of post-natals
L_pi cm 5.8395 5.82786 6.07935 6.06814 6.71652 6.70829 7.26753 7.2588 mean structural length of adults
L2_pi cm^2 34.3594 34.2211 37.4954 37.354 47.2611 47.1378 56.1254 55.9776 mean squared structural length of adults
L3_pi cm^3 203.413 202.177 233.938 232.591 347.616 346.18 457.054 455.107 mean cubed structural length of adults
Ww_pi g 460.745 457.401 551.972 548.122 1086.58 1080.52 1428.66 1420.51 mean wet weight of adults
R 1/d 0 0.00191164 0.000503142 0.00241662 0.00273474 0.0043431 0.00412354 0.0057265 mean reproduction rate of adults
J_X g/d 1.73613 1.72549 1.94333 1.93234 3.29945 3.28439 3.6857 3.67034 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 0.0735545 0.0735957 0.0268157 0.0268303 yield of living structure on food
Y_VX_d mol/mol 0.013179 0.0131893 0.0236275 0.0236277 0.000641375 0.000643084 0.0368904 0.0368834 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.156362 0.156117 0.0570048 0.0569146 yield of living reserve on food
Y_EX_d mol/mol 0.0166724 0.0166499 0.0321212 0.0320531 0.00136343 0.00136416 0.0784216 0.07824 yield of dead reserve on food
Y_CX mol/mol 0.796216 0.796227 0.772261 0.772323 0.609301 0.609487 0.639631 0.639875 yield of CO2 on food
Y_HX mol/mol 0.683837 0.683847 0.663263 0.663317 0.523303 0.523463 0.549352 0.549562 yield of H2O on food
Y_OX mol/mol -0.936091 -0.936105 -0.907928 -0.908002 -0.71634 -0.716559 -0.751998 -0.752285 yield of O2 on food
Y_NX mol/mol 0.064558 0.0645589 0.0626157 0.0626208 0.0494028 0.0494179 0.0518619 0.0518817 yield of N-waste on food
mu_TX J/mol 448865 448872 435380 435417 342626 342737 359835 359978 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