Negaprion brevirostris: Population traits

at T = 26 °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: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.69219 0.69219 0.777295 0.777295 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000568747 0.000568747 0.00010935 0.00010935 spec pop growth rate
t2 d NaN NaN NaN NaN 1218.73 1218.73 6338.77 6338.77 population doubling time
a_b d 509.468 513.467 504.488 508.114 495.228 498.148 495.228 498.148 age at birth
t_p d 9711.47 1.96493e+22 5092.85 13423.8 3263.47 4057.57 3263.47 4057.57 time since birth at puberty
S_b - 0.99997 0.999967 0.999971 0.999968 0.999973 0.99997 0.999973 0.99997 survival probability at birth
S_p - 0.999817 0.999792 0.382106 0.394708 0.999843 0.999823 0.35122 0.360759 survival probability at puberty
theta_0b - 0.0359829 0.037644 0.279998 0.267074 0.246513 0.247906 0.405032 0.393837 frac of ind that is embryo
theta_bp - 0.0359796 0.0376402 0.170533 0.165223 0.185983 0.186722 0.225514 0.222 fraction of individuals that is juvenile
theta_pi - 0.928037 0.924716 0.549469 0.567703 0.567503 0.565372 0.369454 0.384163 frac of ind that is adult
L_bi cm 21.9796 20.3398 18.5131 17.688 16.6989 16.0894 16.4614 16.102 mean structural length of post-natals
L2_bi cm^2 504.797 430.745 408.153 364.634 332.329 304.67 358.725 334.393 mean squared structural length of post-natals
L3_bi cm^3 11882.6 9336.22 9907.99 8195.7 7536.74 6518.7 9431.67 8235.92 mean cubed structural length of post-natals
Ww_bi g 66583.8 48791.3 61127.2 47089.3 57660.7 46317.3 72158.1 58518.7 mean wet weight of post-natals
L_pi cm 22.5209 20.845 21.8293 20.5755 19.4658 18.6992 21.6454 20.8311 mean structural length of adults
L2_pi cm^2 521.834 445.681 515.438 452.881 418.41 382.69 538.037 490.605 mean squared structural length of adults
L3_pi cm^3 12322.3 9695.03 12825.3 10437.1 9810.05 8478.95 14858.2 12689.2 mean cubed structural length of adults
Ww_pi g 69047.7 50666.4 79125.8 59967.5 75052.9 60245.4 113674 90160.8 mean wet weight of adults
R 1/d 0 0 0 0 0 0 6.54189e-05 0 mean reproduction rate of adults
J_X g/d 123.385 96.652 112.029 91.8772 117.352 98.763 126.672 108.398 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 0.0365269 0.0375393 0.00814193 0.00830827 yield of living structure on food
Y_VX_d mol/mol 0.00937602 0.00965827 0.0187993 0.0192855 0.000651177 0.000723661 0.0210866 0.0216368 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.242927 0.229188 0.0541489 0.0507244 yield of living reserve on food
Y_EX_d mol/mol 0.0431624 0.0408161 0.0971828 0.0915217 0.00433073 0.00441816 0.140239 0.132099 yield of dead reserve on food
Y_CX mol/mol 0.77523 0.777139 0.716545 0.721331 0.560725 0.572349 0.616983 0.627018 yield of CO2 on food
Y_HX mol/mol 0.665813 0.667453 0.615411 0.619522 0.481584 0.491567 0.529901 0.53852 yield of H2O on food
Y_OX mol/mol -0.911419 -0.913664 -0.842424 -0.848052 -0.659231 -0.672897 -0.725372 -0.737169 yield of O2 on food
Y_NX mol/mol 0.0628565 0.0630113 0.0580982 0.0584863 0.0454642 0.0464067 0.0500256 0.0508393 yield of N-waste on food
mu_TX J/mol 436404 437535 402562 405385 312373 319223 344869 350772 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