Pollachius virens (Saithe):  

Predictions & Data for this entry

Model:  abj  

MRE = 0.092
SMSE = 0.085

Zero-variate data
ab 9 9.355 (0.03946)dage at birthfishbase
ap1460 1235 (0.1539)dage at puberty for femaleICES
am9125 9174 (0.005331)dlife spanfishbase
Lp39.1 31.06 (0.2056)cmtotal length at pubertyfishbase
Li130 116.3 (0.1053)cmultimate total lengthfishbase
Wwb0.0009 0.0007694 (0.1451)gwet weight at birthfishbase
Wwp543 615.9 (0.1343)gwet weight at pubertyfishbase
Wwi3.2e+04 3.234e+04 (0.01059)gultimate female wet weightfishbase
Ri7123 6205 (0.1289)#/dreprod rate at 75 cm or 3.2 kgWiki
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL_1995 see Fig. 1 (0.03779)time since birthtotal lengthBollRijn2004
tL_1200 see Fig. 1 (0.04567)time since birthtotal lengthBollRijn2004
Pseudo-data at Tref
DataGeneralised animalPollachius virensUnitDescription
v 0.02 0.1303cm/denergy conductance
kap 0.8 0.5508-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 17.54J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7983-growth efficiency


  • Preferred temperature 6 C (ref: fishbase)
  • Females are slightly larger than males and mature later, but differences are small (ref: ICES)
  • Semi-pelagic species that is not bound to a demersal life style (ref: ICES)
  • Length-Weight relationship: W in g = 0.0238 * (L in cm)^2.7374 (ref: ICES)


  • FEMALE total length at maturity - NOTE L50
  • males are assumed to differ from females by {p_Am} and E_Hp only