Narcine brasiliensis: Population traits

at T = 25.6 °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 - 0.720723 0.720723 NaN NaN 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000452907 0.000452907 NaN NaN spec pop growth rate
t2 d NaN NaN NaN NaN 1530.44 1530.44 NaN NaN population doubling time
a_b d 288.657 296.236 NaN NaN 275.282 281.549 NaN NaN age at birth
t_p d 2545.33 2.77767e+22 NaN NaN 1306.1 1692.24 NaN NaN time since birth at puberty
S_b - 0.999878 0.999846 NaN NaN 0.999893 0.999866 NaN NaN survival probability at birth
S_p - 0.999245 0.999002 NaN NaN 0.999388 0.999206 NaN NaN survival probability at puberty
theta_0b - 0.0443403 0.0489655 NaN NaN 0.126731 0.131193 NaN NaN frac of ind that is embryo
theta_bp - 0.0443403 0.0489646 NaN NaN 0.111868 0.115474 NaN NaN fraction of individuals that is juvenile
theta_pi - 0.911319 0.90207 NaN NaN 0.761401 0.753332 NaN NaN frac of ind that is adult
L_bi cm 4.78381 4.13167 NaN NaN 4.97538 4.44302 NaN NaN mean structural length of post-natals
L2_bi cm^2 23.8461 17.654 NaN NaN 27.6539 21.6401 NaN NaN mean squared structural length of post-natals
L3_bi cm^3 122.081 77.201 NaN NaN 165.893 112.59 NaN NaN mean cubed structural length of post-natals
Ww_bi g 243.469 142.519 NaN NaN 394.761 244.762 NaN NaN mean wet weight of post-natals
L_pi cm 4.9089 4.2386 NaN NaN 5.36772 4.77814 NaN NaN mean structural length of adults
L2_pi cm^2 24.7664 18.3572 NaN NaN 30.9273 24.1692 NaN NaN mean squared structural length of adults
L3_pi cm^3 127.482 80.8342 NaN NaN 188.405 128.037 NaN NaN mean cubed structural length of adults
Ww_pi g 254.24 149.226 NaN NaN 448.331 278.343 NaN NaN mean wet weight of adults
R 1/d 0.000164353 0 NaN NaN 0.000995686 0.000275528 NaN NaN mean reproduction rate of adults
J_X g/d 0.765144 0.482003 NaN NaN 1.23116 0.819782 NaN NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 NaN NaN 0.109375 0.109375 NaN NaN yield of faeces on food
Y_VX mol/mol 0 0 NaN NaN 0.0610273 0.0622029 NaN NaN yield of living structure on food
Y_VX_d mol/mol 0.035385 0.0375425 NaN NaN 0.0120865 0.0136864 NaN NaN yield of dead structure on food
Y_EX mol/mol 0 0 NaN NaN 0.0841939 0.0730213 NaN NaN yield of living reserve on food
Y_EX_d mol/mol 0.0351839 0.0317637 NaN NaN 0.0166746 0.0160667 NaN NaN yield of dead reserve on food
Y_CX mol/mol 0.758552 0.75972 NaN NaN 0.662895 0.671224 NaN NaN yield of CO2 on food
Y_HX mol/mol 0.651489 0.652492 NaN NaN 0.569333 0.576487 NaN NaN yield of H2O on food
Y_OX mol/mol -0.891811 -0.893184 NaN NaN -0.779349 -0.789142 NaN NaN yield of O2 on food
Y_NX mol/mol 0.0615042 0.0615989 NaN NaN 0.0537482 0.0544236 NaN NaN yield of N-waste on food
mu_TX J/mol 427953 428744 NaN NaN 373908 378917 NaN NaN 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