Eptatretus stoutii (Pacific hagfish):  

Predictions & Data for this entry

Model:  std  

MRE = 0.125
SMSE = 0.148

Zero-variate data
am7300 7300 (2.634e-05)dlife spanguessed
Lb6.5 7.303 (0.1235)cmtotal length at birthBars1993
Lp 30 30.01 (0.0002623)cmtotal length at pubertyBars1993
Li 73 66.15 (0.09387)cmultimate total lengthBars1993
Wwb0.7638 0.6521 (0.1463)gwet weight at birthestimated
Wwp46.12 45.25 (0.01898)gwet weight at pubertyestimated
Wwi500.5 484.6 (0.03174)gultimate wet weightestimated
Ri0.137 0.1486 (0.08472)#max reproduction rateBars1993
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
LW see Fig. 1 (0.2616)total lengthwet weightAnon2009
LN see Fig. 2 (0.3253)total lengthnumber of eggsBars1993
WO see Fig. 3 (0.2912)wet weightO2 consumptionDrazYeh2011
Pseudo-data at Tref
DataGeneralised animalEptatretus stoutiiUnitDescription
v 0.02 0.01842cm/denergy conductance
kap 0.8 0.5945-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 26.51J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8041-growth efficiency


  • occurs at depths of 15 to 800 m, most commonly 119 to 219 m (ref: Anon2009)
  • temp not above 10 C, salinity 31-32 ppt (ref: Anon2009)
  • female/male-ratio varies from 1 till 3, sometimes 3.7 and 4.4 (ref: Anon2009)
  • W = 0.006084 * L^2.65009 males; W = 0.005050 * L^2.68130 (ref: Bars1993)
  • females spawn throughout the year, hermaphroditism is rare (ref: Anon2009)


  • ASSUMPTION: reproduction is once per year
  • the only measured rate in the data for this entry is the respiration rate


  • [Wiki] http://en.wikipedia.org/wiki/Eptatretus_stoutii.
  • [Anon2009] Anonymous. Developmental fisheries program annual review of activities. Technical report, 2009, Dec 11.
  • [Bars1993] W. H. Barss. Pacific hagfish, Eptatretus stouti, and black hagfish, E. deani: The Oregon fishery and port sampling observations, 1988-92,. Marine Fisheries Review, 55:19--30, 1993.
  • [DrazYeh2011] J. C. Drazen, J. Yeh, J. Friedman, and N. Condon. Metabolism and enzyme activities of hagfish from shallow and deep water of the Pacific Ocean. Comparative Biochemistry and Physiology, Part A, 159, 2011.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.

Bibtex files with references for this entry

Bas Kooijman, 2010/10/11 (last modified by Bas Kooijman 2016/10/18)

accepted: 2016/10/18

refer to this entry as: AmP Eptatretus stoutii version 2016/10/18 bio.vu.nl/thb/deb/deblab/add_my_pet/