Abstract

1. 1. The hepatopancreas, antennal gland, gills, gonads. muscle, stomach, carapace, gastroliths and blood of 52 crayfish ( Austropotamobius pallipes) have been analysed for copper, zinc, iron, manganese and calcium throughout the moult cycle. 2. 2. There are significant changes in most of these metals at the time of ecdysis. 3. 3. The results are interpreted in terms of sites of metal storage and mobilization in the hepatopancreas and evidence is presented to suggest that copper and zinc are metabolized along related but independent pathways.

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