Daphnia cephalata: Population traits

at T = 27 °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: 2024/12/04
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.186391 0.179343 0.589672 0.589672 1 1 scaled functional response
r 1/d 0 0 0.231646 0.0955128 0.349475 0.118481 spec pop growth rate
t2 d NaN NaN 2.99226 7.25711 1.9834 5.85029 population doubling time
a_b d 2.05775 2.07013 1.74944 1.74944 1.65449 1.65449 age at birth
t_p d 30.2707 33.9921 4.31443 4.31443 2.96382 2.96382 time since birth at puberty
S_b - 0.999968 0.999967 0.999981 0.999981 0.999984 0.999984 survival probability at birth
S_p - 0.999671 0.999967 0.999875 0.546117 0.999907 0.428141 survival probability at puberty
theta_0b - 0.0408116 0.0403388 0.333455 0.361485 0.43915 0.468066 frac of ind that is embryo
theta_bp - 0.0408463 0.0403785 0.222412 0.225331 0.246359 0.252355 fraction of individuals that is juvenile
theta_pi - 0.918342 0.919283 0.444133 0.413184 0.314491 0.279579 frac of ind that is adult
L_bi cm 0.0196879 0.019013 0.0371963 0.0385457 0.0413634 0.0430736 mean structural length of post-natals
L2_bi cm^2 0.000387823 0.000361838 0.00147642 0.00161942 0.00191703 0.00220217 mean squared structural length of post-natals
L3_bi cm^3 7.6439e-06 6.89325e-06 6.22235e-05 7.34333e-05 9.91953e-05 0.000132481 mean cubed structural length of post-natals
Ww_bi g 1.11758e-05 9.95789e-06 0.00015318 0.000180776 0.000345096 0.000460897 mean wet weight of post-natals
L_pi cm 0.0196152 0.0189197 0.0423245 0.0450016 0.0509603 0.0561045 mean structural length of adults
L2_pi cm^2 0.000384848 0.000358106 0.00184916 0.0021106 0.00274499 0.00343853 mean squared structural length of adults
L3_pi cm^3 7.55253e-06 6.78109e-06 8.33528e-05 0.000102852 0.000156708 0.000229895 mean cubed structural length of adults
Ww_pi g 1.10422e-05 9.79586e-06 0.000205196 0.000253197 0.000545182 0.000799795 mean wet weight of adults
R 1/d 0.0466949 0.0414597 0.481418 0.569529 0.759914 1.03301 mean reproduction rate of adults
J_X g/d 1.15093e-05 1.03321e-05 0.000138615 0.000152041 0.000305225 0.000350623 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 0.103985 0.0461312 0.113576 0.0447674 yield of living structure on food
Y_VX_d mol/mol 0.0132814 0.0129258 0.000329343 0.0477939 0.000117329 0.0560005 yield of dead structure on food
Y_EX mol/mol 0 0 0.152002 0.0674333 0.281551 0.110977 yield of living reserve on food
Y_EX_d mol/mol 0.00613673 0.00574661 0.000481425 0.0698638 0.000290854 0.138823 yield of dead reserve on food
Y_CX mol/mol 0.871207 0.871953 0.633828 0.659403 0.49509 0.540057 yield of CO2 on food
Y_HX mol/mol 0.628237 0.628775 0.45706 0.475503 0.357015 0.389441 yield of H2O on food
Y_OX mol/mol -0.947437 -0.948248 -0.689288 -0.7171 -0.53841 -0.587312 yield of O2 on food
Y_NX mol/mol 0.130681 0.130793 0.0950741 0.0989104 0.0742635 0.0810086 yield of N-waste on food
mu_TX J/mol 462484 462876 336477 350024 260640 284726 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