Factors for converting the basis of assessment concentrations in biota

The table below gives the typical % dry weight (% dw) and % lipid weight (% lw) for each species and tissue. The values are derived from monitoring data for the years 2001 to 2020 inclusive based on an extration from the ICES data base on 11 January 2022.


species common name % lw in muscle % dw in muscle % lw in liver % dw in liver % lw in soft body % dw in soft body
Gadus morhua cod 0.3 19.2 43.0 55.0
Limanda limanda common dab 0.7 20.1 19.6 32.3
Merlangius merlangus whiting 20.0 36.5 44.5
Platichthys flesus flounder 0.9 21.3 14.9 32.2
Pleuronectes platessa plaice 0.5 20.0 11.0 27.1
Mytilus edulis blue mussel 1.4 16.4
Crassostrea gigas Pacific oyster 1.9 18.0
Nucella lapillus dog whelk 32.3