Daphnia pulex

COMPLETE = 2.5; MRE = 0.077; SMAE = 0.078; SMSE = 0.008

Data & predictions

data prd RE symbol units description
3.6 3.936 0.0933 ab d age at birth
7.2 6.622 0.08032 tp d time since birth at puberty
54 54 3.425e-05 am d life span
0.07 0.08062 0.1518 Lb cm total length at birth
0.16 0.1671 0.0441 Lp cm total length at puberty
0.4 0.3498 0.1256 Li cm ultimate total length
2.6e-05 2.248e-05 0.1354 Wdb g dry weight at birth
0.00019 0.0002 0.05245 Wdp g dry weight at puberty
0.0017 0.001835 0.07959 Wdi g ultimate dry weight
7 6.713 0.04105 Ri #/d maximum reprod rate
see figure 0.04824 tL time since birth vs. length
0.02 0.04889 1.445 psd.v cm/d energy conductance
18 1599 87.83 psd.p_M J/d.cm^3 vol-spec som maint
0.002 0.002 0 psd.k_J 1/d maturity maint rate coefficient
0.3 0.005563 0.9815 psd.k - maintenance ratio
0.8 0.4378 0.4527 psd.kap - allocation fraction to soma
0.8 0.7996 0.0005381 psd.kap_G - growth efficiency
0.95 0.95 0 psd.kap_R - reproduction efficiency

std parameters at 20.0°C

symbol units value free description
z - 0.1426 1 zoom factor
F_m l/d.cm^2 6.5 0 {F_m}, max spec searching rate
kap_X - 0.8 0 digestion efficiency of food to reserve
kap_P - 0.1 0 faecation efficiency of food to faeces
v cm/d 0.04889 1 energy conductance
kap - 0.4378 1 allocation fraction to soma
kap_R - 0.95 0 reproduction efficiency
p_M J/d.cm^3 1599 1 [p_M], vol-spec somatic maint
p_T J/d.cm^2 0 0 {p_T}, surf-spec somatic maint
k_J 1/d 0.002 0 maturity maint rate coefficient
E_G J/cm^3 4448 1 [E_G], spec cost for structure
E_Hb J 0.26 1 maturity at birth
E_Hp J 3.926 1 maturity at puberty
h_a 1/d^2 7.909e-05 1 Weibull aging acceleration
s_G - 0.0001 0 Gompertz stress coefficient
T_A K 8000 0 Arrhenius temperature
T_ref K 293.1 0 Reference temperature
del_M - 0.4077 1 shape coefficient
f - 1 0 scaled functional response for 0-var data
f_tL - 1 0 scaled functional response for tL data