Predictions & Data for this entry

Model: abj climate: MC migrate:
COMPLETE = 2.5 ecozone: MAE food: biP, bjHa, bjCi
MRE = 0.073 habitat: 0jMcp, jiMb, jiMi gender: D
SMSE = 0.075 embryo: Mp reprod: O

Zero-variate data
tj 45 55.28 (0.2284)dtime since birth at metamBIOTIC
tp365 287.1 (0.2134)dtime since birth at pubertyBIOTIC
am3650 3650 (1.056e-05)dlife spanBIOTIC
Lj0.09 0.09565 (0.06279)cmlength at metamguess
Lp0.9 0.924 (0.02668)cmtest diameter at pubertyBIOTIC
Li5.75 5.375 (0.06527)cmultimate test diameterWiki
Wwb5e-07 5.123e-07 (0.02458)gwet weight at birthZeut1955
Wwj0.00048 0.0004328 (0.09823)gwet weight at pubertyBIOTIC
Wwp0.365 0.3902 (0.06907)gwet weight at pubertyBIOTIC
Wwi75.78 76.79 (0.01337)gultimate wet weightWiki
Ri6849 6850 (5.265e-05)#/dmax reprod rateWiki
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL see Fig. 1 (0.07508)time since settlementtest diameterKell2002
Pseudo-data at Tref
DataGeneralised animalPsammechinus miliarisUnitDescription
v 0.02 0.01962cm/denergy conductance
kap 0.8 0.9781-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 15.61J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7994-growth efficiency


  • weight-length: log10(W in g) = -3.183 + 2.877 * log10(diameter in mm), so W in g = 0.4943 * (diameter in cm)^2.877 (ref: RobiGree2010)


  • [Wiki]
  • [BIOTIC]
  • [EoL]
  • [Kell2002] M. S. Kelly. Survivorship and growth rates of hatchery-reared sea urchin. Aquaculture International, 10:309--316, 2002.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [RobiGree2010] L. A. Robinson, S. P. R. Greenstreet, H. Reiss, R. Callaway, J. Craeymeersch, I. de Boois, S. Degraer, S. Ehrich, H. M. Fraser, A. Goffin, I. Kroncke, L. Jorgenson, M. R. Robertson, and J. Lancaster. Length-weight relationships of 216 North Sea benthic invertebrates and fish. J. Mar. Bio. Assoc. UK, 90:95--104, 2010.
  • [Zeut1955] E. Zeuten. Mitotic respiratory rhythms in single eggs of Psammechinus miliaris and of Ciona intestinalis. The Biological Bulletin, 108(3):366--385, 1955.

Bibtex file with references for this entry

Bas Kooijman, 2017/10/03

accepted: 2017/10/03

refer to this entry as: AmP Psammechinus miliaris version 2017/10/03