Abstract
Abstract Concentrations of mercury, cadmium, copper, zinc and iron were determined in the carapace, hepatopancreas, gills, tail muscle, ovary and eggs of 288 Norway lobsters, Nephrops norvegicus, caught in the Clyde Sea area, south of the Isle of Cumbrae, Scotland. Metal levels in males and females were examined separately in relation to size and the season in which the animals were caught. Cadmium, copper and zinc concentrations were highest in the hepatopancreas whereas mercury and iron concentrations were highest in the gill. Levels of metals showed variations between months, with highest levels tending to occur during molt. Metal levels were influenced by lobster size with pronounced size-related increases in mercury levels in the tail muscle and cadmium levels in the hepatopancreas. Levels of several metals in the various tissues differed between the sexes.
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