Abstract

This paper reports concentrations of mercury in muscle tissue of three marine species of fish; plaice ( Pleuronectes platessa L.), dab ( Limanda limanda L.) and lesser-spotted dogfish ( Scyliorhinus caniculus L.), at various locations within Liverpool Bay and the North East Irish Sea. Mean concentrations of mercury in fish muscle within any one sampling area followed the order: lesser spotted dogfish⪢dab>plaice. Concentrations in lesser spotted dogfish were 5–10× higher than in flatfish from the same site. Regressions of mercury concentration against fish length showed significant relationships for the majority of species-site combinations, with the slope of the regression relating to distance from the Mersey Estuary.

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