Predictions & Data for this entry

Model: std climate: Aw, BWh, BSh, Cfa, Cfb migrate:
COMPLETE = 2.8 ecozone: TA food: bxM, xiCi
MRE = 0.139 habitat: 0iTf, 0iTa, 0iTd, 0iTh gender: Dg
SMSE = 0.126 embryo: Tbf reprod: O

Zero-variate data
tg33.5 34.1 (0.0178)dgestation time Rose1989, NicoAnde2007
tx183.3 279.5 (0.525)dtime since birth at weaningNicoAnde2007
tp1825 1474 (0.1924)dtime since birth at pubertyNicoAnde2007
am1.825e+04 1.811e+04 (0.007937)dlife spanNicoAnde2007
Lb1.3 1.677 (0.2903)cmtotal length at birthGrif1965
Lx 30 25.68 (0.1439)cmtotal length at weaningGrif1965
Lp 40 37.98 (0.05047)cmtotal length at pubertyGrif1965
Li 40 38.11 (0.04734)cmultimate total lengthGrif1965
Wwb0.38 0.3502 (0.0784)gwet weight at birth Rose1989, Grif1965
Wwx1500 1257 (0.1619)gwet weight at weaningSchmAnde2003
Wwp3800 4066 (0.06989)gwet weight at pubertySchmAnde2003
Wwi3800 4106 (0.08051)gultimate wet weightNicoAnde2007
Ri0.00274 0.002323 (0.1521)#/dmaximum reprod rateNicoAnde2007
EL2.08e+05 2.056e+05 (0.01177)Jyearly milk productionCorkDove1989
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW see Fig. 1 (0.228)time since birthwet weightNicoAnde2007
WJO see Fig. 2 (0.1682)wet weightO2 consumptionNicoAnde2007
Pseudo-data at Tref
DataGeneralised animalTachyglossus aculeatusUnitDescription
v 0.02 0.05004cm/denergy conductance
kap 0.8 0.9993-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 143.8J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8004-growth efficiency


  • sports torpor; said to be able to lay its egg directly in its pouch. Observed upregulation of intake and assimilation during latation (ref: Wiki)


  • Predicted milk production exceeds observed because it assumes that babies feed on milk only, while actually a gradual transition to solid food exists


  • [Wiki]
  • [CorkDove1989] S. J. Cork and H. Dove. Lactation in the tammar wallaby (Mucropus eugenii). ii. Intake of milk components and maternal allocation of energy. Journal of Zoology, London, 219:399--409, 1989.
  • [Grif1965] M. Griffiths. Rate of growth and intake of milk in a suckling echidna. Comparative Biochemistry and Physiology, 16:383--392, 1965.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [NicoAnde2007] S. Nicol and N. A. Andersen. The life history of an egg-laying mammal, the echidna (Tachyglossus aculeatus). Ecoscience, 14:275--285, 2007.
  • [Rose1989] R. W. Rose. Embryonic growth rates of marsupials with a note on monotremes. Journal of Zoology, London, 218:11--16, 1989.
  • [SchmAnde2003] J. Schmid, N. A. Aandersen, J. R. Speakman, and S. Nicol. Field energetics of free-living, lactating and non-lactating echidnas (Tachyglossus aculeatus). Comparative Biochemistry and Physiology Part A, 136:903--909, 2003.
  • [Semo1984] R. Semon. Zur entwicklungsgeschichte der monotremen. Zoologische Forschungsreisen in Australien, 2:61--74, 1984.

Bibtex file with references for this entry

Jessica Ridenour, Bas Kooijman, 2012/08/08 (last modified by Bas Kooijman 2016/11/14)

accepted: 2015/10/08

refer to this entry as: AmP Tachyglossus aculeatus version 2015/10/08