The distributions of copper, zinc, iron, and cadmium among the tissues of Dorippe granulata were determined. The highest copper concentrations were found in the haemolymph (c. 53 μg ml-1) while the highest iron concentrations occurred in the gills (c. 720 μg g-1 dry weight) and the highest zinc concentrations in the exoskeleton (c. 200 μg g-1 dry weight). By comparison, concentrations of the non-essential metal, cadmium, were low in all tissues (mean = 10 μg g-1 dry weight). The highest value was recorded from the midgut gland of a female crab (18·5 μg Cd g-1 dry weight). Concentrations of copper, zinc, and iron were positively correlated with tissue-hydration levels. Such a relationship was not found for cadmium. The findings are discussed with regard to trace-metal levels found in temperate and tropical brachyurans from clean and polluted localities.
Bibliographical noteFunding Information:
We are grateful to Lene Hau for technical assistance. TLF and VEF were funded from grants awarded to MHD by the Danish Science Council (SNF) and the Carlsberg Foundation.