Heterotis niloticus: Population traits

at T = 28 °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_minf f_max date: 2024/07/23
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.374206 0.393438 0.696719 0.696719 1 1 scaled functional response
r 1/d 0 0 0.00620264 0.000593855 0.0078266 0.000710808 spec pop growth rate
t2 d NaN NaN 111.75 1167.2 88.563 975.154 population doubling time
a_b d 9.2925 9.23841 8.72417 8.72417 8.48719 8.48719 age at birth
t_p d 7841.34 2542.17 937.906 937.906 736.23 736.23 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_p - 1 0.398073 1 0.341986 1 0.316735 survival probability at puberty
theta_0b - 0.00108955 0.321979 0.052592 0.414414 0.064172 0.440313 frac of ind that is embryo
theta_bp - 0.00109156 0.203342 0.0499054 0.241454 0.0601441 0.246724 fraction of individuals that is juvenile
theta_pi - 0.997819 0.474679 0.897503 0.344133 0.875684 0.312963 frac of ind that is adult
L_bi cm 4.53596 1.16416 1.25925 0.521937 1.1848 0.492324 mean structural length of post-natals
L2_bi cm^2 21.4705 4.4484 2.6271 1.35855 2.40088 1.30836 mean squared structural length of post-natals
L3_bi cm^3 103.238 21.1663 7.37116 7.55172 6.75997 8.63847 mean cubed structural length of post-natals
Ww_bi g 220.167 46.3716 22.9152 23.4766 27.2205 34.7846 mean wet weight of post-natals
L_pi cm 4.54078 1.60904 1.3217 0.796869 1.2566 0.776086 mean structural length of adults
L2_pi cm^2 21.494 6.34711 2.77213 2.29958 2.56441 2.32561 mean squared structural length of adults
L3_pi cm^3 103.351 30.2325 7.78088 12.8486 7.22406 15.4466 mean cubed structural length of adults
Ww_pi g 220.408 66.2342 24.189 39.9433 29.0892 62.1991 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 1.22889 0.267694 0.279959 0.144774 0.367223 0.200118 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 yield of faeces on food
Y_VX mol/mol 0 0 0.163312 0.0309767 0.144075 0.0306833 yield of living structure on food
Y_VX_d mol/mol 0.0117887 0.0301437 1.32748e-05 0.0634601 6.51572e-06 0.0619123 yield of dead structure on food
Y_EX mol/mol 0 0 0.344388 0.0653227 0.436074 0.0928696 yield of living reserve on food
Y_EX_d mol/mol 0.0133521 0.0358958 2.79936e-05 0.133823 1.97212e-05 0.187391 yield of dead reserve on food
Y_CX mol/mol 0.865484 0.824585 0.382883 0.597043 0.31045 0.517769 yield of CO2 on food
Y_HX mol/mol 0.622668 0.593243 0.275463 0.429539 0.223351 0.372506 yield of H2O on food
Y_OX mol/mol -0.941214 -0.896737 -0.416386 -0.649284 -0.337614 -0.563074 yield of O2 on food
Y_NX mol/mol 0.129823 0.123688 0.0574325 0.0895564 0.0465675 0.0776653 yield of N-waste on food
mu_TX J/mol 459262 437685 201408 315752 160608 272059 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female are the same.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer