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Effects of high tissue concentrations of selenium on reproduction by bluegills

Journal Article · · Trans. Am. Fish. Soc.; (United States)
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Recent studies have associated high body concentrations of selenium with declines in fish populations inhabiting cooling reservoirs of coal-fired electric power plants. Because some evidence indicated that these declines resulted from reduced reproduction, the authors made a series of 18 artificial crosses of bluegills Lepomis macrochirus possessing high and low body concentrations of Se to determine whether elevated Se in parents reduced viability of gametes or increased mortality of embryos and larvae. Bluegills with high body concentrations of Se were obtained from Hyco Reservoir (cooling water source of a coal-fired power plant) and those with low body concentrations were obtained from nearby Roxboro City Lake, North Carolina. Neither percent fertilization nor percent hatch of eggs differed significantly among the parent combinations. However, all crosses (8) that included females with high Se body concentrations resulted in larvae with edema; such larvae did not survive to the swim-up stage. Only one of these crosses produced some normal larvae (35%). Mean Se concentrations in the gonads and carcass (body minus gonad) were more than 20 times higher in bluegills from Hyco Reservoir (average = 7.94 mg/kg) than in those from Roxboro City Lake (average = 0.38 mg/kg). The high Se concentrations in ovaries of Hyco Reservoir bluegills and in their progeny suggested that Se was transferred from females to offspring and caused edema in larvae. This abnormality resulted in mortality of affected larval bluegills - and consequently may have caused reductions in the bluegill populations of selenium-enriched reservoirs.
Research Organization:
Ohio State Univ., Columbus
OSTI ID:
5001858
Journal Information:
Trans. Am. Fish. Soc.; (United States), Journal Name: Trans. Am. Fish. Soc.; (United States) Vol. 115:2; ISSN TAFSA
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
BODY
CARBONACEOUS MATERIALS
COAL
COOLING PONDS
EDEMA
ENERGY SOURCES
FEMALE GENITALS
FISHES
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GONADS
LARVAE
MATERIALS
MORTALITY
ORGANS
OVARIES
PATHOLOGICAL CHANGES
PONDS
POWER PLANTS
REPRODUCTION
SELENIUM COMPOUNDS
SURFACE WATERS
SYMPTOMS
THERMAL POWER PLANTS
VERTEBRATES
WATER RESERVOIRS