Comparison of short-and long-term sexual reproduction tests with the marine red algachampia parvula

Autor: Glen B. Thursby, Richard L. Steele
Rok vydání: 1986
Předmět:
Zdroj: Environmental Toxicology and Chemistry. 5:1013-1018
ISSN: 1552-8618
0730-7268
DOI: 10.1002/etc.5620051109
Popis: A 2-d exposure test using the marine red alga Champia parvula was developed to assess the toxic effects of pollutants entering the marine and estuarine environments. The initial exposure was followed by a 5- to 7-d recovery period to allow the development of any cystocarps (evidence of sexual reproduction, the endpoint measured). The 2-d exposure test was validated by comparison with a previously developed 2-weed tests in which “no sexual reproduction” was used as the reproductive endpoint. The 2-d procedure is intended for use in testing both single compounds and complex effluents. Complex effluents, however, cannot be accurately tested with the 2-week test; therefore, only single compounds were used to compare the two procedures. Nine single compounds were tested. Concentrations that resulted in a 95% or greater decrease from the control response with the 2-d exposure were considered the best estimate of the no sexual reproduction response from the 2-week test. All of the single compounds tested, except cadmium, yielded essentially the same results with both tests.
Databáze: OpenAIRE
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