Octopus cyanea (Big blue octopus):  

Predictions & Data for this entry

Model:  abj  

COMPLETE = 2.5
MRE = 0.308
SMSE = 0.369

Zero-variate data
DataObservedPredicted(RE)UnitDescriptionReference
ab_25 25 17.37 (0.3052)dage at birthHeuk1976
ab_13125 70.91 (0.4328)dage at birthHeuk1976
ts32.5 49.45 (0.5215)dtime since birth at settlementHeuk1976
tp210 168.2 (0.1992)dtime since birth at pubertyHerwDepz2012
am320.3 329.2 (0.02808)dlife spanHeuk1976
Lb0.3 0.2913 (0.029)cmmantle length at birthHeuk1976
Wwb0.0055 0.0003191 (0.942)gwet weight at birthguess
Wws0.3 0.2647 (0.1176)gwet weight at settlementHeuk1976
Wwp1000 352.9 (0.6471)gwet weight at pubertyHeuk1976
Wwi3600 4759 (0.322)gultimate wet weightHeuk1976
Ni7e+05 6.909e+05 (0.01302)#cum reprod at deathHeuk1976
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW see Fig. 1 (0.1377)time since settlementwet weightHeuk1976
Pseudo-data at Tref
DataGeneralised animalOctopus cyaneaUnitDescription
v 0.02 0.003128cm/denergy conductance
kap 0.8 0.6497-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 21.14J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8045-growth efficiency

Facts

  • semelparous: death at first spawning, 10 d after last hatch (ref: Wiki)
  • Digestion efficiency independent of feeding rate (ref: Heuk1976)
  • small eggs with a planktontic larval stage, difficult to culture (ref: Heuk1976)
  • hatches using a hatching gland (Hoyles organ) (ref: Heuk1976)
  • males and females grow at the same rate (ref: Heuk1976)

Discussion

  • z is not well-fixed by data, size ultimate size is much larger than size at death
  • in view of fitting results, puberty does not coincide with mating and part of structure converts to eggs just before death
  • model abj has been used, meaning that settlement has no effect on acceleration

Bibliography

  • Wiki
  • Kooy2010
  • Heuk1976
  • HerwDepz2012

Bibtex files with references for this entry


Bas Kooijman, 2012/12/11

accepted: 2016/01/10

refer to this entry as: AmP Octopus cyanea version 2016/01/10 bio.vu.nl/thb/deb/deblab/add_my_pet/