Transfer of toxic concentrations of selenium from parent to progeny in the fathead minnow (Pimephales promelas)
| Autor: | Randall Schultz, Roger O. Hermanutz |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
inorganic chemicals
Embryo Nonmammalian Health Toxicology and Mutagenesis Cyprinidae chemistry.chemical_element Toxicology Selenium biology.animal Animals Ecotoxicology Ecosystem Water pollution Pollutant biology Aquatic ecosystem Ovary food and beverages General Medicine Minnow Pollution chemistry Environmental chemistry Female Pimephales promelas Water Pollutants Chemical |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 45:568-573 |
| ISSN: | 1432-0800 0007-4861 |
| DOI: | 10.1007/bf01700630 |
| Popis: | Selenium, an essential trace element, may become concentrated in aquatic ecosystems to levels that are toxic to fish. Finley (1985) and Gillespie and Baumann (1986) have shown that selenium in overflow water from coal burning power plant settling basins contributed to a decline in fish populations. The leaching of selenium from the soil into water systems used for irrigation in highly seleniferous areas of the country poses another serious problem. Studies demonstrated that female bluegill sunfish transfer selenium to their progeny. The objective of the study was to determine whether the selenium levels within fathead minnow embryos in a semi-natural ecosystem resulted from direct uptake by the embryos following spawning, from female-to-progeny transferral, or from some combination of these two occurrences. |
| Databáze: | OpenAIRE |
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