Ornithorhynchus anatinus (Platypus):  

Predictions & Data for this entry

Model:  std  

MRE = 0.039
SMSE = 0.048

Zero-variate data
tg 10 10.36 (0.03576)dgestation timeWiki
tx137.3 137.3 (0.0001483)dtime since birth at weaningJackFisk1998
tp730 801.5 (0.0979)dtime since birth at pubertyJackFisk1998
am8249 8039 (0.02541)dlife spanAnAge
Li 43 42.74 (0.006056)cmultimate total length for femalesWiki
Lim 50 50.22 (0.004388)cmultimate total length for malesWiki
Wwb0.47 0.4769 (0.01464)gwet weight at birthguessed
Wwi2400 2414 (0.005909)gultimate wet weight
Ri0.005479 0.005588 (0.01987)#/dmaximum reprod rateWiki
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW_B see Fig. 1 (0.08506)time since birthwet weightJackFisk1998
tW_Y see Fig. 1 (0.1346)time since birthwet weightJackFisk1998
Pseudo-data at Tref
DataGeneralised animalOrnithorhynchus anatinusUnitDescription
v 0.02 0.1211cm/denergy conductance
kap 0.8 0.9986-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 222.1J/d.cm^3vol-spec som maint
k_J 0.002 0.0021811/dmaturity maint rate coefficient
kap_G 0.8 0.8017-growth efficiency


  • strong body size gradient from small in NE to large in SE Australia (ref: Kooy2010)
  • sensitive electroreception in bill; males have no parental care; hatching young are blind, without hair and fed with milk; after 5 w since birth, mother start spending time outside the burrow; after 4 m since birth, young emerge from burrow (ref: Kooy2010)


  • Males are assumed to differ from females by {p_Am} only
  • Till day 151 or 155, weights are predicted by JackFisk1998, not measured


  • Wiki
  • Kooy2010
  • JackFisk1998
  • ADW
  • AnAge

Bibtex files with references for this entry

Bas Kooijman, 2013/07/04 (last modified by Bas Kooijman 2016/11/14)

accepted: 2016/11/14

refer to this entry as: AmP Ornithorhynchus anatinus version 2016/11/14 bio.vu.nl/thb/deb/deblab/add_my_pet/