Chydorus sphaericus (Waterflea):  

Predictions & Data for this entry

Model:  std  

MRE = 0.093
SMSE = 0.116

Zero-variate data
tp 18 18.28 (0.01571)dtime since birth at at pubertyVijv1980
am 90 95.17 (0.0574)dlife spanguess
Lb0.019 0.02105 (0.1079)cmtotal length at birthVijv1980
Lp0.033 0.03262 (0.01147)cmtotal length at pubertyVijv1980
Li0.05 0.05192 (0.03838)cmultimate total lengthVijv1980
Ri0.33 0.3223 (0.02336)#/dmaximum reprod rateVijv1980
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL_2 see Fig. 1 (0.06202)time since birthlengthVijv1980
tL_5 see Fig. 1 (0.03956)time since birthlengthVijv1980
Tab see Fig. 2 (0.2543)temperatureage at birthVijv1980
LW see Fig. 3 (0.3179)lengthdry weightNandSarm2005
Pseudo-data at Tref
DataGeneralised animalChydorus sphaericusUnitDescription
v 0.02 0.01448cm/denergy conductance
kap 0.8 0.9454-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 2892J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8083-growth efficiency


  • [nina] sphaericus.pdf.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [NandSarm2005] S. Nandini, S. S. S. Sarma, and P. Ramirez-Garcia. Length-weight relationships of three cladoceran species from a tropical reservoir in Mexico. J. Freshwater Ecol., 20:405--406, 2005.
  • [Vijv1980] J. Vijverberg. Effect if temperature in laboratory studies on the development and growth of cladocera and copepoda from Tjeukemeer, the Netherlands. Freshwater Biol, 10:317--340, 1980.

Bibtex files with references for this entry

Bas Kooijman, 2011/11/12 (last modified by Bas Kooijman 2016/01/10)

accepted: 2016/01/10

refer to this entry as: AmP Chydorus sphaericus version 2016/01/10