Abstract
A variety of marine biota, including zooplankton, sargassum, surface plankton, squid, shrimp, and fish collected along the south Texas Outer Continental Shelf, were analyzed for Cu, Zn, Cd, Pb, Cr, Ni, Fe, and Mn. Although there is a great deal of variation in the chemical content of the various samples, both within species and between species, the variations all fall within the range of values published for similar organisms collected elsewhere.
An increase in Pb concentration from north to south, and an increase in Cd concentration from nearshore to further offshore in the zooplankton mirrors the sediment patterns. Statistical analysis of the chemical and biological data for these samples indicates that relatively small percentages of the biological makeup of the sample can markedly affect the concentrations of Pb, Cd, Ni, and Zn. This is particularly true for the larvacea, ostracoda, and mollusca.
Chemical analyses of the exoskeletons of shrimp and the skin of both squid and fish indicate that they generally contain higher metal levels in comparison with the flesh from the same organism. This is probably the result of either adsorption from seawater and/or an internal detoxification procedure employed by the organism. The analysis of a composite sample of squid ‘pens’ indicates that they contain enriched Cu, Cd, Zn, Pb, and Fe levels in comparison with the skin and flesh. These elevated levels are probably the result of an internal detoxification procedure and/or may represent a means of storing necessary metabolites, at least in the case of Cu and Zn, but can not be attributed to adsorption as the chitinous ‘pen’ is imbedded in tissue and is not directly exposed to seawater.
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Anderson, J., J. Neff, and S. Petrocelli: Sublethal effects of oil, heavy metals and PCBs on marine organisms. In: Mechanisms of Survival in Toxic Environments (ed. M. Khan), N.Y., Academic Press, 83 (1974).
Bertine, K., and E. Goldberg: Trace elements in clams, mussels, and shrimp. Limnol. Oceanogr.,17, 877 (1972).
Boothe, P., and G. Knauer: The possible importance of fecal material in the biological amplification of trace and heavy metals. Limnol. Oceanogr.,17, 270 (1972).
Chow, T.: Lead in the marine environment. In: Baseline Studies of Pollutants in the Marine Environment (ed. E. Goldberg), Brookhaven, N.Y., N.S.F./I.D.O.E., 209, (1972).
Duke, T., J. Willis, T. Price, and K. Fischler: Influence of environmental factors on the concentration of65Zn by an experimental community. In: Proc. 2nd Nat. Symp. on Radioecology, Ann Arbor (ed. D. Nelson and F. Evans),U.S. Atomic Energy Commission, 355 (1969).
Fowler, S., and L. Small: Moulting ofEuphasia pacifica as a possible mechanism for vertical transport of zinc 65 in the sea. Limnol. Oceanogr.,1, 237 (1967).
Goldberg, E.: Biogeochemistry of trace metals. In: Treatise on Marine Ecology and Paleoecology,1, (ed. J. Hedgpeth), Ecology Geol. Soc. Am. Mem. 67 (1957).
Goldschmidt, V.: Geochemistry, (ed. A. Muir), Oxford Press, Clarendon, 730 pp (1938).
Holmes, C.: Personal communication (1975).
Hunter, R., G. Hill, and L. Garrison: Maps Showing Drift Patterns Along the South Texas Coast 1970–1974.U.S.G.S. Misc. Field Studies Map,MF-623 (1974).
Ichiye, T.: Personal communication (1975).
I.D.O.E.: Baseline studies of pollutants in the marine environment. (ed. E. Goldberg) Background Papers for a Workshop atBrookhaven National Laboratory, 24–26 May, 1972, 799 pp (1972).
Knauer, G., and J. Martin: Mercury in a marine pelagic food chain. Limnol. Oceanogr.,17, 886 (1972).
Knauer, G., and J. Martin: Seasonal variations of cadmium, copper, manganese, lead, and zinc in water and phytoplankton in Monterey Bay, California. Limnol. Oceanogr.,18, 597 (1973).
Martin, J.: The possible transport of trace metalsvia moulted copepod exoskeletons. Limnol. Oceanogr.,15, 756 (1970).
Martin, J., and G. Knauer: A comparison of inshorevs. offshore levels of 21 trace and major elements in marine plankton. In: Baseline Studies of Pollutants in the Marine Environment. (ed. E. Goldberg),N.S.F./I.D.O.E., Brookhaven, N.Y., 35 (1972).
Martin, J., and G. Knauer: The elemental composition of plankton. Geochim. Cosmochim. Acta,37, 1639 (1973).
M.E.Q.: Marine Environmental Quality: Suggested research programs for understanding man's effect on the ocean. (ed. R. Vetter),National Academy of Sciences, Washington, D.C., 107 pp (1971).
Nicholls, G., N. Curl Jr., and V. Bowen: Spectrographic analyses of marine plankton. Limnol. Oceanogr.4, 472 (1959).
Osterberg, C., A. Carey Jr., and H. Curl, Jr.: Acceleration of sinking rates of radionuclides in the ocean. Nature,200, 1276 (1963).
Palmer, H., J. Langford, C. Jenkins, T. Beasley, and J. Aase: Levels of iron 55 in humans, animals, and food, 1964–67. Radiol. Health Data and Rep.,9, 387 (1968).
Park, E.: Abundance and species composition of the zooplankton of the South Texas Continental Shelf. In: Second Quaterly Report on the South Texas O.C.S. fromTexas A & M University, April 30, 1975, for theB. L. M., 42 pp (1975a).
Park, E.: Personal communication (1975b).
Preston, A.: Concentrations of iron-55 in commercial fish species from the North Atlantic. Mar. Biol.,6, 345 (1972).
Presley, B., J. Culp, and R. Sims: Heavy metals—A study program to identify problems related to environmental quality—Gulf of Mexico and Caribbean. In: Baseline Studies of Pollutants in the Marine Environment (ed. E. Goldberg),N.S.F./I.D.O.E., Brookhaven, N.Y., 732 (1972).
Prosser, C., D. Bishop, F. Brown, T. Jahn, and V. Wulff: Comparative Animal Physiology, W.B. Saunders Co., Philadelphia, 887 pp (1950).
Vinogradov, A.: The elementary chemical composition of marine organisms. Sears Foundation Mar. Res. Mem.2, New Haven, 647 pp (1953).
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Horowitz, A., Presley, B.J. Trace metal concentrations and partitioning in zooplankton, neuston, and benthos from the south Texas Outer Continental Shelf. Arch. Environ. Contam. Toxicol. 5, 241–255 (1977). https://doi.org/10.1007/BF02220907
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DOI: https://doi.org/10.1007/BF02220907