Table 1.

Parameter values and data sources for the bio-economic model.

Parameter	Value	Eq.	Source
Biological sub-model
Probabilistic maturation reaction norm slope, s	0.0 cm yr−1	1	[36]⁎
Probabilistic maturation reaction norm intercept, i	64.0 cm	1	[36]⁎
Probabilistic maturation reaction norm width, w	18.9 cm	1	[36]⁎
Strength of density dependence in growth, x	2.08×10−5 kg−1	2	[36]⁎
Reproductive investment, G	0.17	3	[63]
Reproductive-investment conversion factor, γ	0.60241	3	[38], [39]
Allometric proportionality constant, k	4.9×10−6 kg cm−j	4	[64]
Allometric exponent, j	3.18	4	[64]
Weight-specific oocyte density, D	4.45×106 kg−1	4	[40]
Maximum growth increment, g	13.0 cm	–	[11]
Natural mortality rate	0.2 yr−1	–	[11]
Spawning-ground fishing mortality before 1990	0.13 yr−1	–	[3]⁎
Immature feeding-ground fishing mortality before 1990	0.52 yr−1	–	[3]⁎
Size-selectivity midpoint, l50	49.34 cm	–	[45]
Size-selectivity range, SR	10.47 cm	–	[45]
Factor for conversion of total fishing mortality to feeding-ground fishing mortality, η	1.15	–	[3]⁎
Factor for conversion of total fishing mortality to spawning-ground fishing mortality, k	0.215	–	[3]⁎
Economic sub-model
Intercept of demand function, $\overline{p}$	18.88 NOK kg−1	5	[27]
Slope of demand function, b	1.19257×10−8 NOK kg−2	5	[27]
Stock-output elasticity, α	0.58	5	[27]
Effort-output elasticity, β	0.85	5	[27]
Catchability coefficient, q	6.17×10–4 tonnes−1 day−1	5	[27]
Fixed costs per vessel, cf	1.55×106 NOK	6	[27]
Coefficient of variable costs per vessel, cv	131.6 NOK tonnes−1 day−1	6	[27]
Optimal number of tonnage days, e*	66,712 tonnes day	9	[27]

^⁎M. Heino and O.R. Godø (unpublished data).