Effects of high tissue concentrations of selenium on reproduction by bluegills

Journal Article · Sat Mar 01 00:00:00 EST 1986 · Trans. Am. Fish. Soc.; (United States)

DOI:https://doi.org/10.1577/1548-8659(1986)115<208:EOHTCO>2.0.CO;2· OSTI ID:5001858

Gillespie, R B; Baumann, P C

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), Vol. 115:2
• Country of Publication: United States
• Language: English

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COAL
COOLING PONDS
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