Preliminary results of laboratory toxicity tests with the mayfly, Isonychia bicolor (Ephemeroptera: Isonychiidae) for development as a standard test organism for evaluating streams in the Appalachian coalfields of Virginia and West Virginia
| Autor: | B. S. Echols, Donald S. Cherry, Rebecca J. Currie |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Insecta
media_common.quotation_subject Sodium Chloride Management Monitoring Policy and Law Mayfly Animal science Water column Rivers Toxicity Tests Animals Ecotoxicology Effluent General Environmental Science media_common Hydrology biology Virginia Ceriodaphnia dubia Sediment Salt Tolerance General Medicine West Virginia biology.organism_classification Coal Mining Pollution Environmental science Reproduction Surface water Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Monitoring and Assessment. 169:487-500 |
| ISSN: | 1573-2959 0167-6369 |
| Popis: | Selecting the most appropriate test species for sediment and water column assays has been a primary goal for ecotoxicologists. Standard test organisms and established test guidelines exist, but the USEPA-recommended species may not be the most sensitive organisms to anthropogenic inputs. This paper describes preliminary results of toxicity tests with the mayfly, Isonychia bicolor (Ephemeroptera). Results suggested that Isonychia were moderately sensitive to NaCl after 96 h with an average LC(50) value of 3.10 g NaCl per liter. This value decreased after 7 days of exposure, resulting in a mean LC(50) value of 1.73 g NaCl per liter. When exposed to a coal-mine-processed effluent, Isonychia generated LC(50) values that ranged from 13% to 39% effluent. I. bicolor were more sensitive to the coal processing effluent than Ceriodaphnia dubia with conductivity lowest observable effects concentration (LOEC) values for mayfly survivorship that ranged from 1,508 to 4,101 microS/cm, while LOEC values for C. dubia reproduction ranged from 2,132 to 4,240 microS/cm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink