Daphnia obtusa: Population traits

at T = 22 °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: 2024/01/29
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.259687 0.279763 0.639881 0.639881 1 1 scaled functional response
r 1/d 0 0 0.221029 0.0878029 0.304435 0.107206 spec pop growth rate
t2 d NaN NaN 3.136 7.89435 2.27683 6.46556 population doubling time
a_b d 2.32635 2.3027 2.08957 2.08957 2.01151 2.01151 age at birth
t_p d 32.7326 27.3769 8.32751 8.32751 6.13972 6.13972 time since birth at puberty
S_b - 0.999802 0.999809 0.99986 0.99986 0.999875 0.999875 survival probability at birth
S_p - 0.9983 0.749935 0.999121 0.470146 0.999289 0.39038 survival probability at puberty
theta_0b - 0.0696445 0.121043 0.371623 0.427394 0.458626 0.506884 frac of ind that is embryo
theta_bp - 0.0696356 0.103952 0.234131 0.243398 0.248567 0.256442 fraction of individuals that is juvenile
theta_pi - 0.86072 0.775005 0.394247 0.329207 0.292806 0.236674 frac of ind that is adult
L_bi cm 0.0153415 0.0160578 0.0211193 0.0212999 0.0226003 0.0227593 mean structural length of post-natals
L2_bi cm^2 0.000236575 0.000260449 0.000486684 0.000509831 0.000580232 0.000622846 mean squared structural length of post-natals
L3_bi cm^3 3.66452e-06 4.26076e-06 1.21473e-05 1.35605e-05 1.68417e-05 2.03999e-05 mean cubed structural length of post-natals
Ww_bi g 7.56334e-06 9.14439e-06 4.39924e-05 4.91107e-05 8.58418e-05 0.000103978 mean wet weight of post-natals
L_pi cm 0.0155748 0.0165162 0.0248566 0.0262487 0.0284437 0.0307479 mean structural length of adults
L2_pi cm^2 0.000243143 0.000273918 0.000643643 0.000727157 0.000859295 0.00103645 mean squared structural length of adults
L3_pi cm^3 3.80401e-06 4.56002e-06 1.73577e-05 2.11994e-05 2.76623e-05 3.83341e-05 mean cubed structural length of adults
Ww_pi g 7.85123e-06 9.78665e-06 6.28624e-05 7.67757e-05 0.000140995 0.000195389 mean wet weight of adults
R 1/d 0.212451 0.253599 0.801306 0.946153 1.0398 1.36382 mean reproduction rate of adults
J_X g/d 6.78276e-06 8.04451e-06 3.43822e-05 3.60174e-05 6.40603e-05 6.8765e-05 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 0.0780899 0.0330577 0.080037 0.0318038 yield of living structure on food
Y_VX_d mol/mol 0.0196358 0.0289779 0.0013805 0.043535 0.000610664 0.0443205 yield of dead structure on food
Y_EX mol/mol 0 0 0.20472 0.0866638 0.327911 0.1303 yield of living reserve on food
Y_EX_d mol/mol 0.0208913 0.0332141 0.00361909 0.114131 0.00250189 0.181581 yield of dead reserve on food
Y_CX mol/mol 0.850098 0.828433 0.602816 0.613237 0.479564 0.502619 yield of CO2 on food
Y_HX mol/mol 0.613015 0.597392 0.434697 0.442212 0.345819 0.362444 yield of H2O on food
Y_OX mol/mol -0.924481 -0.900921 -0.655562 -0.666896 -0.521526 -0.546599 yield of O2 on food
Y_NX mol/mol 0.127515 0.124265 0.0904223 0.0919856 0.0719347 0.0753929 yield of N-waste on food
mu_TX J/mol 451192 439743 318178 323766 250449 262903 yield of heat on food

Remarks

  • Reprod-code A applies. Data concerns population of females only.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer