Daphnia magna: Population traits

at T = 20 °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: 2024/02/05
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.480146 0.480146 0.532193 0.532193 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.372826 0.372826 0.140273 0.140273 spec pop growth rate
t2 d NaN NaN NaN NaN 1.85917 1.85917 4.94142 4.94142 population doubling time
a_b d 0.705375 0.775558 0.692786 0.762039 0.620626 0.682884 0.620626 0.682884 age at birth
t_p d 29.1142 NaN 18.696 NaN 5.711 14.7766 5.711 14.7766 time since birth at puberty
S_b - 0.999889 0.999756 0.999894 0.999767 0.999921 0.999826 0.999921 0.999826 survival probability at birth
S_p - 0.99931 0.998421 0.801439 0.904259 0.999552 0.998955 0.67143 0.784576 survival probability at puberty
theta_0b - 0.0240036 0.0352288 0.0918331 0.0639555 0.207375 0.226517 0.266702 0.211358 frac of ind that is embryo
theta_bp - 0.0240605 0.0354253 0.0823242 0.0611043 0.164684 0.175849 0.20083 0.170608 fraction of individuals that is juvenile
theta_pi - 0.951936 0.929346 0.825843 0.87494 0.62794 0.597634 0.532468 0.618033 frac of ind that is adult
L_bi cm 0.055762 0.0350642 0.0510151 0.0361384 0.0465259 0.0365869 0.0461133 0.0390952 mean structural length of post-natals
L2_bi cm^2 0.00326898 0.00124811 0.00288429 0.00134077 0.00247124 0.00141997 0.00256432 0.00167287 mean squared structural length of post-natals
L3_bi cm^3 0.000198718 4.50343e-05 0.000176522 5.09515e-05 0.000149834 5.87404e-05 0.000173607 7.88009e-05 mean cubed structural length of post-natals
Ww_bi g 0.000235499 4.98503e-05 0.000212737 5.69909e-05 0.000207593 7.18234e-05 0.000240531 9.63519e-05 mean wet weight of post-natals
L_pi cm 0.0564864 0.0353988 0.0533858 0.0368177 0.0512456 0.0392985 0.0527903 0.0423378 mean structural length of adults
L2_pi cm^2 0.00333302 0.00126934 0.00309781 0.00138568 0.00290517 0.00161708 0.00322606 0.00192795 mean squared structural length of adults
L3_pi cm^3 0.000203236 4.60581e-05 0.0001921 5.32223e-05 0.000182979 6.99685e-05 0.000230352 9.48866e-05 mean cubed structural length of adults
Ww_pi g 0.000240853 5.09836e-05 0.00023151 5.95309e-05 0.000253516 8.55522e-05 0.00031915 0.00011602 mean wet weight of adults
R 1/d 0 0 0 0 0.364212 0 0.602009 0 mean reproduction rate of adults
J_X g/d 0.000146255 3.22632e-05 0.000143032 3.84155e-05 0.000230272 7.64473e-05 0.000238945 9.00625e-05 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.0546875 0.0546875 0.0546875 0.0546875 0.0546875 0.0546875 0.0546875 0.0546875 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.271132 0.320174 0.113906 0.137172 yield of living structure on food
Y_VX_d mol/mol 0.0784415 0.0943969 0.126618 0.130585 0.00347092 0.0061221 0.15559 0.145523 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.104519 0.0713109 0.0439099 0.0305517 yield of living reserve on food
Y_EX_d mol/mol 0.0145189 0.0100949 0.0259765 0.0154787 0.00133801 0.00136355 0.0599785 0.0324118 yield of dead reserve on food
Y_CX mol/mol 0.852352 0.840821 0.792718 0.799248 0.564853 0.546342 0.571928 0.599654 yield of CO2 on food
Y_HX mol/mol 0.614744 0.606441 0.571807 0.576509 0.407745 0.394417 0.412839 0.432801 yield of H2O on food
Y_OX mol/mol -0.926933 -0.914393 -0.86208 -0.869183 -0.614278 -0.594147 -0.621972 -0.652124 yield of O2 on food
Y_NX mol/mol 0.127853 0.126123 0.118908 0.119887 0.084728 0.0819513 0.0857892 0.0899481 yield of N-waste on food
mu_TX J/mol 451544 445999 421154 424944 303227 295631 306863 322773 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