Predictions & Data for this entry

Model: std climate: BSh migrate:
COMPLETE = 2.7 ecozone: TA food: bpCi, biCv
MRE = 0.325 habitat: 0bTd, biFm, biFr gender: Dtfm
SMSE = 0.306 embryo: Tt reprod: O

Zero-variate data
ab 65 39.5 (0.3924)dage at birthcrocodilian
ap4563 1420 (0.6888)dage at puberty for femaleWhit1987
apm6023 1740 (0.7112)dage at puberty for maleWhit1987
am1.825e+04 1.86e+04 (0.01908)dlife spanWhit1987
Lb 24 18.74 (0.2192)cmtotal length at birthWhit1987
Lp131 137 (0.04515)cmtotal length at pubertycrocodilian
Lpm150 187.2 (0.248)cmtotal length at pubertycrocodilian
Li200 181.3 (0.09364)cmultimate total length for femaleWiki
Lim300 251.8 (0.1606)cmultimate total length for maleWiki
Wwb 42 29.23 (0.304)gwet weight at birthWhit1987
Wwp7480 1.141e+04 (0.5253)gwet weight at pubertyguessed
Wwpm1.125e+04 2.914e+04 (1.591)gwet weight at pubertyguessed
Wwi2.66e+04 2.646e+04 (0.005313)gultimate wet weight of femaleWiki
Wwim9e+04 9.026e+04 (0.002919)gultimate wet weight of maleWiki
Ri0.03562 0.04812 (0.3512)#/dmaximum reprod rateWhit1987
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
aW see Fig. 1 (0.1381)ageyolk-free wet weight Whit1987, WhitWebb1990
aWY see Fig. 2 (0.1323)ageyolk wet weight Whit1987, WhitWebb1990
aJO see Fig. 3 (0.2164)ageO2 consumption Whit1987, WhitWebb1990
Pseudo-data at Tref
DataGeneralised animalCrocodylus johnsoniUnitDescription
v 0.02 0.07124cm/denergy conductance
kap 0.8 0.97-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 55.92J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8412-growth efficiency


  • temperature effects have shown that eggs incubated at 32C produce male embryos, whereas those a couple of degrees above and below this produce female embryos (ref: crocodilian)


  • Males are assumed to differ from females by {p_Am} only


  • [Wiki]
  • [crocodilian]
  • [Brit] Adam Britton.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [Whit1987] P. J. Whitehead. Respiration of Crocodylus johnstoni embryos. In G. J. W. Webb, S. C. Manolis, and P. J. Whitehead, editors, Crocodiles and Alligators, pages 473--497. Beatty, Sydney, 1987.
  • [WhitWebb1990] P. J. Whitehead, G. J. W. Webb, and R. S. Seymour. Effect of incubation temperature on development of Crocodylus johnstoni embryos. Physiol. Zool., 63:949--964, 1990.

Bibtex file with references for this entry

Bas Kooijman, 2011/11/12

accepted: 2015/09/21

refer to this entry as: AmP Crocodylus johnsoni version 2015/09/21