Environmental Monitoring and Assessment

, Volume 50, Issue 1, pp 67–84 | Cite as

Contaminants in Wintering Canvasbacks and Scaups from San Francisco Bay, California

  • Roger L. Hothem
  • David G. Lonzarich
  • Jean E. Takewaka
  • Harry M. Ohlendorf


Organochlorines, metals, and trace elements were measured in liver, kidney, or whole-body tissues of canvasbacks (Aythya valisineria), lesser scaups (A. affinis), and greater scaups (A. marila) collected from San Francisco Bay and three coastal areas of California during the winter of 1986–1987. Potentially toxic concentrations of mercury (mean ≤10.4 µg/g, dry weight) and selenium (mean ≤32.7 µg/g, dry weight) were found in livers of scaups and canvasbacks from several San Francisco Bay sites. These elements varied spatially, temporally, and between species, with the highest concentrations found in late winter. Mean concentrations of mercury, selenium, and cadmium were generally higher in scaups than in canvasbacks. Of all the organochlorines included in the analyses, only p,p'-DDE and total PCBs were detected in all samples in this study. Mean whole-body concentrations of DDE and PCBs from San Francisco Bay ducks collected in late winter varied spatially and between species, but the concentrations were not considered toxic. Causes for inter-specific differences are unclear, but may be attributable to differences in diet, movement, or physiology.

canvasbacks greater scaups lesser scaups metals organochlorines San Francisco Bay 


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  1. Blus, L. J., Pattee, O. H., Henny, C. J. and Prouty, R. M.: 1983, ‘First Records of Chlordane-related Mortality in Wild Birds’, J. Wildl. Manage. 47, 196–198.Google Scholar
  2. Conomos, T. J.: 1979, ‘Properties and Circulation of San Francisco Bay Waters’, in: Conomos, T. J. (ed.), San Francisco Bay: The Urbanized Estuary, Allen Press, Lawrence, KS, pp. 47–84.Google Scholar
  3. Conomos, T. J., Smith, R. E. and Gartner, J.W.: 1985, ‘Environmental Setting of San Francisco Bay’, Hydrobiologia 129, 1–12.Google Scholar
  4. Custer, T. W. and Heinz, G. H.: 1980, ‘Reproductive Success and Nest Attentiveness of Mallard Ducks Fed Aroclor 1254’, Environ. Pollut. (Ser. A) 21, 313–318.Google Scholar
  5. Custer, T. W. and Hohman, W. L.: 1994, ‘Trace Elements in Canvasbacks (Aythya valisineria) Wintering in Louisiana, USA, 1987–1988’, Environ. Pollut. 84, 253–259.PubMedGoogle Scholar
  6. Cutter, G. A.: 1989, ‘The Estuarine Behaviour of Selenium in San Francisco Bay’, Estuar., Coast. Shelf Sci. 28, 13–34.Google Scholar
  7. Di Giulio, R. T. and Scanlon, P. F.: 1984, ‘Heavy Metals in Tissues of Waterfowl from the Chesapeake Bay, USA’, Environ. Pollut. (Ser. A) 35, 29–48.Google Scholar
  8. Fleming, W. J.: 1981, ‘Environmental Metal Residues in Tissues of Canvasbacks’, J. Wildl. Manage. 45, 508–511.Google Scholar
  9. Furness, R. W. and Rainbow, P. S.: 1990, Heavy Metals in the Environment, CRC Press, Inc., Boca Raton, FL, pp. 256.Google Scholar
  10. Gasaway, W. C. and Buss, I. O.: 1972, ‘Zinc Toxicity in the Mallard Duck’ J. Wildl. Manage. 36, 1107–1117.Google Scholar
  11. Gochfeld, M. and Burger, J.: 1987, ‘Heavy Metal Concentrations in the Liver of Three Duck Species: Influence of Species and Sex’, Environ. Pollut. 45, 1–15.PubMedGoogle Scholar
  12. Gunther, A. J., Davis, J. A. and Phillips, D. H.: 1987, An Assessment of the Loading of Toxic Contaminants to the San Francisco Bay-Delta, Aquatic Habitat Institute, Richmond, CA, pp. 330.Google Scholar
  13. Heinz, G. H.: 1979, ‘Methylmercury: Reproductive and Behavioral Effects on Three Generations of Mallard Ducks’, J. Wildl. Manage. 43, 394–401.Google Scholar
  14. Heinz, G. H., Hoffman, D. J. and Gold, L. G.: 1989, ‘Impaired Reproduction of Mallards Fed an Organic Form of Selenium’, J. Wildl. Manage. 53, 418–428.Google Scholar
  15. Henny, C. J., Rudis, D. D., Roffe, T. J. and Robinson-Wilson, E.: 1995, ‘Contaminants and Sea Ducks in Alaska and the Circumpolar Region’, Environ. Health Perspect. 103(4), 41–49.Google Scholar
  16. Long, E., MacDonald, D., Matta, M. B., VanNess, K., Buchman, M. and Harris, H.: 1988, ‘Status and Trends in Concentrations of Contaminants and Measures of Biological Stress in San Francisco Bay’, NOAA Tech. Mem. NOS OMA 41, National Oceanic and Atmospheric Administration, Seattle, WA, pp. 268.Google Scholar
  17. Lonzarich, D. G., Harvey, T. E. and Takekawa, J. E.: 1992, ‘Trace Element and Organochlorine Concentrations in California Clapper Rail (Rallus longirostris obsoletus) Eggs’, Arch. Environ. Contam. Toxicol. 23, 147–153.Google Scholar
  18. Luoma, S. N. and Cloern, J. E.: 1982, ‘The Impact of Waste-water Discharge on Biological Communities in San Francisco Bay’, in Kockelman, W. J., Conomos, T. J. and Leviton, A. E. (eds.), San Francisco Bay: Use and Protection, Amer. Assoc. Advance. Sci., San Francisco, CA, pp. 137–160.Google Scholar
  19. Luoma, S. N., Cain, D. and Johansson, C.: 1985, ‘Temporal Fluctuations of Silver, Copper and Zinc in the Bivalve Macoma balthica at Five Stations in South San Francisco Bay’, Hydrobiologia 129, 109–120.Google Scholar
  20. Luoma, S. N., Dagovitz, R. and Axtmann, E.: 1990, ‘Temporally Intensive Study of Trace Metals in Sediments and Bivalves from a Large River-estuarine System: Suisun Bay/Delta in San Francisco Bay’, Sci. Total Environ. 97/98, 685–712.Google Scholar
  21. Miles, A. K. and Ohlendorf, H. M.: 1993, ‘Environmental Contaminants in Canvasbacks Wintering on San Francisco Bay, California’, Calif. Fish Game 79, 28–38.Google Scholar
  22. Mora, M. A., Anderson, D. W. and Mount, M. E.: 1987, ‘Seasonal Variation of Body Condition and Organochlorines in Wild Ducks from California and Mexico’, J. Wildl. Manage. 51, 132–141.Google Scholar
  23. Nebeker, A. V., Dunn, K. D., Griffis, W. L. and Schuytema, G. S.: 1994, ‘Effects of Dieldrin in Food on Growth and Bioaccumulation in Mallard Ducklings’, Arch. Environ. Contam. Toxicol. 26, 29–32.Google Scholar
  24. Nichols, F. H., Cloern, J. E., Luoma, S. N. and Peterson, D. H.: 1986, ‘The Modification of an Estuary’, Science 231, 567–573.Google Scholar
  25. Ohlendorf, H. M.: 1993, ‘Marine Birds and Trace Elements in the Temperate North Pacific’, in Vermeer, K., Briggs, K. T., Morgan, K. H. and Siegel-Causey, D. (eds.), The Status, Ecology, and Conservation of Marine Birds of the North Pacific, Canadian Wildl. Serv. Spec. Publ., Ottawa, Ontario, pp. 232–240.Google Scholar
  26. Ohlendorf, H. M. and Fleming, W. J.: 1988, ‘Birds and Environmental Contaminants in San Francisco and Chesapeake Bays’, Mar. Pollut. Bull. 19, 487–495.CrossRefGoogle Scholar
  27. Ohlendorf, H.M., Hoffman, D. J., Saiki, M. K. and Aldrich, T.W.: 1986a, ‘Embryonic Mortality and Abnormalities of Aquatic Birds: Apparent Impacts of Selenium from Irrigation Drainwater’, Sci. Total Environ. 52, 49–63.Google Scholar
  28. Ohlendorf, H. M., Hothem, R. L., Bunck, C. M., Aldrich, T.W. and Moore, J. F.: 1986b, ‘Relationships Between Selenium Concentrations and Avian Reproduction’, Trans. N. Am. Wildl. Nat. Resour. Conf. 51, 330–342.Google Scholar
  29. Ohlendorf, H. M., Lowe, R. W., Kelly, P. R. and Harvey, T. E.: 1986c, ‘Selenium and Heavy Metals in San Francisco Bay Diving Ducks’, J. Wildl. Manage. 50, 64–71.Google Scholar
  30. Ohlendorf, H. M., Hothem, R. L., Bunck, C. M. and Marois, K. C.: 1990, ‘Bioaccumulation of Selenium in Birds at Kesterson Reservoir, California’, Arch. Environ. Contam. Toxicol. 19, 495–507.PubMedGoogle Scholar
  31. Ohlendorf, H. M., Marois, K. C., Lowe, R.W., Harvey, T. E. and Kelly, P. R.: 1991, ‘Trace Elements and Organochlorines in Surf Scoters from San Francisco Bay, 1985’, Environ. Monit. Assess. 18, 105–122.Google Scholar
  32. Ohlendorf, H. M. and Hothem, R. L.: 1995, ‘Agricultural Drainwater Effects on Wildlife in Central California’, in Hoffman, D. J., Rattner, B. A., Burton, G. A., Jr. and Cairns, J., Jr. (eds.), Handbook of Ecotoxicology, Lewis Publishers, Boca Raton, FL, pp. 577–595.Google Scholar
  33. Parslow, J. L. F., Thomas, G. J. and Williams, T. D.: 1982, ‘Heavy Metals in the Livers of Waterfowl from the Ouse Washes, England’, Environ. Pollut. (Ser. A) 29, 317–327.Google Scholar
  34. Phillips, D. J. H.: 1987, Toxic Contaminants in the San Francisco Bay-Delta and their Possible Biological Effects, Aquatic Habitat Institute, Richmond, CA, pp. 413.Google Scholar
  35. Phillips, D. J. H. and Spies, R. B.: 1988, ‘Chlorinated Hydrocarbons in the San Francisco Estuarine Ecosystem’, Mar. Pollut. Bull. 19, 445–453.Google Scholar
  36. Stenzel, L. E. and Page, G. W.: 1988, ‘Results of the 16–18 April 1988 shorebird census of San Francisco and San Pablo Bays’, Draft Report, Point Reyes Bird Observatory, Stinson Beach, CA, pp. 18.Google Scholar
  37. Stickel, L. F., Stickel, W. H. and Dyrland, R. A.: 1983, ‘Oxychlordane, HCS-3260, and Nonachlor in Birds: Lethal Residues and Loss Rates’, J. Toxicol. Environ. Health 12, 611–622.PubMedGoogle Scholar
  38. Vermeer, K. and Peakall, D. B.: 1979, ‘Trace Metals in Seaducks of the Fraser River Delta Intertidal Area, British Columbia’, Mar. Pollut. Bull. 10, 189–193.Google Scholar
  39. White, D. H., Finley, M. T. and Ferrell, J. F.: 1978, ‘Histopathologic Effects of Dietary Cadmium on Kidneys and Testes of Mallard Ducks’, J. Toxicol. Environ. Health 4, 551–558.PubMedGoogle Scholar
  40. White, D. H., Stendell, R. C. and Mulhern, B. M.: 1979, ‘Relations of Wintering Canvasbacks to Environmental Pollutants - Chesapeake Bay, Maryland’, Wilson Bull. 91, 279–287.Google Scholar
  41. White, J. R., Hofmann, P. S., Hammond, D. and Baumgartner, S.: 1988, ‘Selenium Verification Study, 1986-dy1987’, A Report to the California State Water Resources Control Board from California Department of Fish and Game, pp. 60 + appendices.Google Scholar

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Roger L. Hothem
    • 1
  • David G. Lonzarich
    • 2
  • Jean E. Takewaka
    • 2
  • Harry M. Ohlendorf
    • 3
  1. 1.U.S.DavisU.S.A
  2. 2.U.S.NewarkU.S.A
  3. 3.U.S.DavisU.S.A.

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