Crotalus horridus (Timber rattlesnake):  

Predictions & Data for this entry

Model:  std  

MRE = 0.048
SMSE = 0.055

Zero-variate data
ab135 141.8 (0.05064)dage at puberty for femalesAnAge
tp2555 2345 (0.08221)dtime since birth at puberty for femalesAnAge
tpm1825 1825 (2.877e-05)dtime since birth at puberty for malesAnAge
am1.102e+04 1.102e+04 (3.655e-05)dlife spanAnAge
Lb32.5 31.95 (0.01679)cmtotal length at hatchingADW
Lp72.2 87.51 (0.212)cmtotal length at pubertyWiki
Li138 135.4 (0.01878)cmultimate total length of femalesWiki
Lim159 155.1 (0.02465)cmultimate total length of malesWiki
Wwb22.5 21.34 (0.05157)gwet weight at birthADW
Wwi1625 1624 (0.0007178)gultimate wet weight of femalesADW
Wwim2500 2519 (0.007745)gultimate wet weight of malesADW
Ri0.0274 0.02663 (0.02795)#/dmaximum reprod rateADW
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
WX see Fig. 1 (0.09761)wet weightcum food ingestedConnRudo2003
LW see Fig. 2 (0.08574)total lengthwet weightConnRudo2003
Pseudo-data at Tref
DataGeneralised animalCrotalus horridusUnitDescription
v 0.02 0.1049cm/denergy conductance
kap 0.8 0.5437-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 10.64J/^3vol-spec som maint
k_J 0.002 0.00039341/dmaturity maint rate coefficient
kap_G 0.8 0.7983-growth efficiency
k 0.3 0.2906-maintenance ratio


  • Viviparous; C. atrox and C. horridus may hybridize in nature; facultative parthenogenesis occurs (ref: retileDB)


  • Males are assumed to differ from females by {p_Am} and E_Hm only
  • In view of low somatic maintenance, pseudodata k_J = 0.002 1/d is replaced by pseudodata k = 0.3


  • Wiki
  • Kooy2010
  • ConnRudo2003
  • arkive
  • AnAge
  • ADW
  • retileDB

Bibtex files with references for this entry

Bas Kooijman, 2017/10/21

accepted: 2017/10/21

refer to this entry as: AmP Crotalus horridus version 2017/10/21