Predictions & Data for this entry

Model: std climate: ME migrate: phylum:
COMPLETE = 1.2 ecozone: MS food: biP class:
MRE = 0.047 habitat: 0iMb gender: D order:
SMSE = 0.059 embryo: Ms reprod: O family:

Zero-variate data
ab 30 28.48 (0.05057)dage at birthguess
tp6570 6651 (0.01228)dtime since birth at pubertyguess
am4.563e+04 4.563e+04 (1.427e-05)dlife spanguess
Lb0.05 0.05255 (0.05107)cmtotal length at birthguess
Lp 2 1.969 (0.01538)cmtotal length at pubertyguess
Li5.95 5.74 (0.03524)cmultimate total lengthBreyPeck1995
Ri46.58 46.54 (0.0007377)#/dmaximum reprod rateguess
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
LW see Fig. 1 (0.1307)shell lengthasfree dry weightBreyPeck1995
tL see Fig. 2 (0.1305)time since settlementshell lengthBreyPeck1995
Pseudo-data at Tref
DataGeneralised animalMagellania fragilisUnitDescription
v 0.02 0.01189cm/denergy conductance
kap 0.8 0.7936-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 1.865J/^3vol-spec som maint
k_J 0.002 0.00030531/dmaturity maint rate coefficient
kap_G 0.8 0.7993-growth efficiency
k 0.3 0.3-maintenance ratio


  • Adults of most species are of one sex throughout their lives (ref: Wiki)
  • The larvae of articulate species live only on yolk, and remain among the plankton for only a few days (ref: Wiki)


  • Since larvae do not feed (see fact 2), no acceleration is assumed
  • In view of low somatic maintenance, pseudodata k_J = 0.002 1/d is replaced by pseudodata k = 0.3


  • [Wiki]
  • [BreyPeck1995] T. Brey, L. S. Peck, J. Gutt, S. Hain, and W. E. Arnitz. Population dynamics of Magellania fragilis, a brachiopod dominating a mixed-botto, macrobentic assemblage on the Antarctic shelf. J. mar. biol. Ass. U.K., 75:857--869, 1995.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.

Bibtex file with references for this entry

Bas Kooijman, 2014/07/25 (last modified by Bas Kooijman 2017/11/11)

accepted: 2017/11/11

refer to this entry as: AmP Magellania fragilis version 2017/11/11