Birgus latro (Coconut crab):  

Predictions & Data for this entry

Model:  abj  

MRE = 0.179
SMSE = 0.192

Zero-variate data
ab 28 20.54 (0.2663)dage at birthADW
tj 49 50.58 (0.03233)dtime since birth at metamWiki
tp1825 2549 (0.3969)dtime since birth at pubertyWiki
am3.65e+04 3.65e+04 (4.068e-05)dlife spanOkaMiya2015
Lp2.45 2.229 (0.09014)cmthoracic length at pubertySatoYose2008
Li 5 4.821 (0.03581)cmultimate thoracic length for femalesOkaMiya2015
Lim 8 7.371 (0.07864)cmultimate thoracic length for malesOkaMiya2015
L20.75 0.9593 (0.279)cmthoracic length at 2.5 yrEoL
Wwb0.00041 0.0004432 (0.0809)gdry weight at birthHamaMats2016
Wwp118 105.4 (0.1065)gwet weight at pubertySatoYose2008
Wwi1000 1066 (0.06646)gultimate wet weightWiki
Wwim4100 4273 (0.04228)gultimate wet weightWiki
Ri378.1 375.2 (0.007645)#/dmaximum reprod rateADW
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
LdL_f see Fig. 1 (0.6514)thoracic lengthchange in thoracic lengthOkaMiya2015
LdL_m see Fig. 1 (0.5461)thoracic lengthchange in thoracic lengthOkaMiya2015
Pseudo-data at Tref
DataGeneralised animalBirgus latroUnitDescription
v 0.02 0.01162cm/denergy conductance
kap 0.8 0.7625-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 2.026J/^3vol-spec som maint
k_J 0.002 0.00013771/dmaturity maint rate coefficient
kap_G 0.8 0.8083-growth efficiency
k 0.3 0.2991-maintenance ratio


  • Largest terrestrial arthropod (ref: Wiki)
  • Very powerfull claw when big (ref: OkaTomi2016)
  • Juveniles use shell for housing (till 2-3 yr, with thoracic length 0.5 till 1 cm), but adults don not and harden their abdominal terga by depositing chitin and chalk (ref: Wiki, EoL)


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


  • [Wiki]
  • [EoL]
  • [ADW]
  • [HamaMats2016] K. Hamasaki, T. Matsuda, K. Takano M. Sugizaki, Y. Murakami, S. Dan, and S. Kitada. Thermal adaptations of embryos of six terrestrial hermit crab species. Aquatic Biology, 25:83--96, 2016.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [OkaMiya2015] S. Oka, K. Miyamoto, S. Matsuzaki, and T. Sato. Growth of the coconut crab, Birgus latro, at its northernmost range estimated from mark-recapture using individual identification based on carapace grooving patterns. Zoological Science, 32:260--265, 2015.
  • [OkaTomi2016] S. Oka, T. Tomita, and K. Miyamoto. A mighty claw: Pinching force of the coconut crab, the largest terrestrial crustacean. PLoS One, 11:e0166108, 2016.
  • [SatoYose2008] T. Sato and K. Yoseda. Reproductive season and female maturity size of coconut crab Birgus latro on Hatoma Island, southern Japan. Fesheries Science, 74:1277--1282, 2008.

Bibtex files with references for this entry

Bas Kooijman, 2017/08/30

accepted: 2017/08/30

refer to this entry as: AmP Birgus latro version 2017/08/30