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<br />
<br />DIETARY TOXICITY AND STRIPED BASS
<br />
<br />voluted tubules through the collecting tubules to
<br />the urinary bladder.
<br />Consumption of red shiners from selenium-af-
<br />fected areas of Belews Lake produced renal and
<br />hepatic damage, alone or in combination, that im-
<br />paired the excretory and detoxifying capabilities,
<br />respectively, of striped bass and contributed to
<br />their demise. The absence of piscivorous fishes
<br />near the ash-basin discharge and down lake areas
<br />of Belews Lake may be a result of toxicity asso-
<br />ciated with consumption of selenium-laden forage
<br />fish. The same area near the ash-basin discharge
<br />produced mayfly nymphs that were lethal to blue-
<br />gills when ingested (Finley 1985). Toxicity caused
<br />by ingested selenium from a variety offood sources
<br />may act directly to eliminate game fish in Belews
<br />Lake. It is not known if predators were eliminated
<br />from the fish community in the downlake areas
<br />ofBelews Lake due to effects of excessi ve seleni urn
<br />on fish reproduction (Gillespie and Baumann
<br />1986). However, reproductive impairment could
<br />be expected at intermediate lake locations where
<br />adult game fish are present and selenium contam-
<br />ination is high.
<br />Duke Power Company has changed the ash-
<br />handling system at the electricity-generating fa-
<br />cility at Belews Lake, which has reduced selenium
<br />. inputs to the lake and should encourage recovery
<br />of game-fish populations. The timetable for com-
<br />plete or partial recovery of the Belews Lake fish
<br />community is unknown; however, the unaffected
<br />fish assemblage in the uplake area should serve as
<br />a source of immigrants for repopulation of the
<br />down lake area.
<br />
<br />Acknowledgments
<br />We acknowledge the technical assistance ofTer-
<br />ri A. Layel, Cooperative Education student from
<br />the University of North Carolina-CharIotte. W.
<br />Mark Rash tirelessly kept us supplied with shin-
<br />ers, and we greatly appreciate his work. David H.
<br />Davis and Billy L. Little prepared the figures. We
<br />thank Charlie E. Smith; the scientists at Duke
<br />Power Company, Production Environmental Ser-
<br />vices; and the anonymous reviewers of this manu-
<br />script.
<br />
<br />References
<br />
<br />AOAC (Association of Official Analytical Chemists).
<br />1984. Official methods of analysis, 14th edition.
<br />AOAC. Arlington, Virginia.
<br />Bennett, S. R., A. D. Wyrick, S. W. Lee, and J. H. McNeil.
<br />1976. Science and art in preparing tissues embed-
<br />ded in plastic for light microscopy, with special ref-
<br />
<br />407
<br />
<br />erence to glycol methacrylate, glass knives and sim-
<br />ple stains. Stain Technology 51:71-97.
<br />Bertram, P. E., and A. S. Brooks. 1986. Kinetics of
<br />accumulation of selenium from food and water by
<br />fathead minnows. Water Research 20:877-884.
<br />Cherry, D. S., R. K. Guthrie, J. H. Rodgers, Jr_, J. Cairns,
<br />Jr., and K. L. Dickson. 1976. Responses ofmos-
<br />quitofish (Gambusia affinis) to ash effiuent and ther-
<br />mal stress. Transactions of the American Fisheries
<br />Society 105:686-{)94.
<br />Cumbie, P. M., and S. L. Van Horn. 1979. Selenium
<br />accumulation associated with fish mortality and re-
<br />productive failure. Proceedings of the Annual Con-
<br />ference Southeastern Association ofFish and Wild-
<br />life Agencies 32:612-624.
<br />Finley, K. A. 1985. Observations of bluegills fed se-
<br />lenium-contaminated Hexagenia nymphs collected
<br />from Belews Lake, North Carolina. Bulletin of En-
<br />vironmental Contamination and Toxicology 35:816-
<br />825.
<br />Garrett, G. P., and C. R. Inman. 1987. Selenium-in-
<br />duced changes in fish populations of a heated res-
<br />ervoir. Proceedings of the Annual Conference
<br />Southeastern Association of Fish and Wildlife
<br />Agencies 38:291-301.
<br />Gatlin, D. M., III, and R. P. Wilson. 1984. Dietary
<br />selenium requirement of fingerling channel catfish.
<br />Journal of Nutrition 114:627-633.
<br />Gillespie, R. 8., and P. C. Baumann. 1986. Effects of
<br />high tissue concentrations of selenium on repro-
<br />duction by bluegills. Transactions of the American
<br />Fisheries Society 115:208-213.
<br />Grizzle, J. M., and W. A. Rogers. 1979. Anatomy and
<br />histology of the channel catfish. Alabama Agricul-
<br />tural Experiment Station, Auburn University.
<br />Groman, D. 8. 1982. Histology of the striped bass.
<br />American Fisheries Society Monograph 3.
<br />Hamilton, S. J., A. N. Palmisano, G. A. Wedemeyer,
<br />and W. T. Yasutake. 1986. Impacts of selenium
<br />on early life stages and smoltification offall chinook
<br />salmon. Transactions of the North American Wild-
<br />life and Natural Resources Conference 51 :343-356.
<br />Harrell, R. D., R. L. Fuller, and T. J. Edwards. 1978.
<br />An investigation of the fish community of Belews
<br />Lake, North Carolina_ Duke Power Company,
<br />Technical Report Series 78-07, Huntersville, North
<br />Carolina.
<br />Hicks, 8. D., J. W. Hilton, and H. W. Ferguson. 1984.
<br />Influence of dietary selenium on the occurrence of
<br />nephrocalcinosis in the rainbow trout, Salmo gaird-
<br />neri Richardson. Journal of Fish Diseases 7:379-
<br />389.
<br />Hilton, J. W_, P. V. Hodson, and S. J. Slinger. 1980.
<br />The requirement and toxicity of selenium in rain-
<br />bow trout (Salmo gairdnen). Journal of Nutrition
<br />110:2527-2535.
<br />Lemly, A. D. 1985. Toxicology of selenium in a fresh-
<br />water reservoir: implications for environmental
<br />hazard evaluation and safety. Ecotoxicology and
<br />Environmental Safety 10:314-338.
<br />NRC (National Research Council). 1983. Selenium in
<br />nutrition, revised edition. National Academy of
<br />Sciences, Washington, D.C.
<br />
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