. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. o HMW I I I I I 1111 170n 100. 10 10' MT 0 VLMW I I I I 11 I I I I I I 11 10~ 10 10 10 pmoles Cu/kg jumoles Cu/kg Figure 3. Vector diagrams of megalopa dry weight and copper associated with the total cytosol and each cytosoHc iigand pool (expressed as micromoles per kilogram dry weight of tissue) in R. harrisii megalopa. Total, HMW, MT, and VLMW represent total cytosolic copper, high molecular weight, me- tallothionein, and very low molecular weight ligands pools, respectively. The arrows delineate the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. o HMW I I I I I 1111 170n 100. 10 10' MT 0 VLMW I I I I 11 I I I I I I 11 10~ 10 10 10 pmoles Cu/kg jumoles Cu/kg Figure 3. Vector diagrams of megalopa dry weight and copper associated with the total cytosol and each cytosoHc iigand pool (expressed as micromoles per kilogram dry weight of tissue) in R. harrisii megalopa. Total, HMW, MT, and VLMW represent total cytosolic copper, high molecular weight, me- tallothionein, and very low molecular weight ligands pools, respectively. The arrows delineate the p[Cu^^] (-log free cupric ion concentration) to which the larvae were exposed throughout development from the lowest, to the highest exposures (p[Cu^^] from to ). DISCUSSION Cytosolic copper accumulation and distribution The cytosolic distributions of Cu among the HMW, MT, and VLMW Ugand pools were similar to those previously reported for R. harrisii (Fig. 1; Sanders et ai, 1983) and for other crab species (Olafson et al, 1979b; Overnell, 1982). These three metal binding pools have also been reported in other marine invertebrates (Coombs, 1974; Howard and Nickless, 1977, 1978; Jenkins et al, 1982; Frazier and George, 1983). In our fractionation procedure the HMW pool contained a heterogeneous group of Cu ligands. Most of these ligands are soluble proteins. A number of these proteins, including Cu metalloenzymes and the respiratory pigment hemocyanin, have specific. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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