Rangia cuneata

It is emphasized that Cr+3, probably because of its very low solubility in seawater, appears to have a much lower bioavailability to most groups of marine animals than Ct 6, which is more water soluble (Carr et al. 1982). The clam Rangia cuneata appears to be an exception it accumulated up to 19 mg Cr/kg in soft parts, on a dry weight basis, during exposure for 16 days to chromium-contaminated muds, and retained most of it for an extended period the estimated biological half-time was 11 days (Carr et al. 1982). In general, benthic invertebrates rarely accumulate chromium from contaminated sediments (82 to 188 mg Cr+Vkg) only a few examples have been recorded (Neff etal. 1978). 

Olson, K.R. and R.C. Harrel. 1973. Effect of salinity on acute toxicity of mercury, copper, and chromium for Rangia cuneata (Pelecypoda, Mactridae). Contrib. Mar. Sci. 17 9-13. 

Clam, Rangia cuneata, Neuse River, North Carolina, 1965-67, soft parts before Chinese nuclear tests in May and December 1966 vs. posttest ... 

Tunsford CA, Weinstein MP, Scott L. 1987. Uptake of Kepone by the estuarine bivalve Rangia cuneata, during the dredging of contaminated sediments in the James River, VA. Water Research 21 411-416. 

Anderson, R.S., H.D. Durst, and W.G. Landis. 1988. Organofluorophosphate-hydrolyzing activity in an estuarine clam, Rangia cuneata. Comp. Biochem. Physiol. 91C 575-578. 

Landis, W.G., R.S. Anderson, N.A. Chester, H.D. Durst, M.V. Haley, D.W. Johnson, and R.M. Tauber. 1989a. The organophosphate acid anhydrases of the protozoan, Tetrahymena thermophila, and the clam, Rangia cuneata. In Acjuatic Toxicology and Environmental Fate Vol. 12, ASTTM STP 1027. U.M. Cowgill and L.R. Williams, Eds. American Society for Testing and Materials, Philadelphia, PA, pp. 74-81. 

DeLeon IR, Ferrairo JB, Byme CJ. 1988. Bioaccumulation of polynuclear aromatic hydrocarbons by the clam, Rangia Cuneata, in the vicinity of a creosote spill. Bull Environ Contain Toxicol 41 872-879. 

The metabolism of 35S-labelled sulphur amino acids in marine and fresh water invertebrates has been studied and reviewed by Awapara and coworkers179 180. The general conclusion drawn from these studies was that the metabolism of sulphur-bearing amino acids in two molluscs studied is qualitatively the same as in mammals. Taurine, which serves as an osmoregulator in marine molluscs, is formed either by decarboxylation of cysteic acid (in Rangia cuneata) or by oxidation of hypotaurine (in Mytilus edulis), derived from cysteinesulphinic acid by decarboxylation. In Arenicola cristata only the terminal reactions are different. Methionine and cysteine sulphur incorporates into taurocyamine by transamidation between taurine and arginine. 

Quahog, southern, Mercenaria campechiensis, 868 Rangia cuneata 105, 149, 661 Rangia spp., 105, 149, 661 Scrobicularia spp., 767 Softshell clam, Mya arenaria, 148, 149, 182, 558, 595, 867, 868 Strophitis spp., 54 Surf clam, Spisula solidissima, 774 Tapes decussatus, 43 Tellina tenuis, 188... 

Rangia cuneata Digestive gland 12.4 Wenning and Di Giulio (1988a)... 

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