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Comparison of effluent toxicity results using Ceriodaphnia dubia cultured on several diets
Author(s) -
NorbergKing Teresa J.,
Schmidt Shaneen
Publication year - 1993
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620121020
Subject(s) - selenastrum , ceriodaphnia dubia , biology , toxicity , cladocera , acute toxicity , toxicology , algae , botany , zoology , ecology , crustacean , chemistry , organic chemistry
Several diets have been proposed for Ceriodaphnia dubia , but no single diet has been universally accepted as optimal for toxicity testing. Although several diets for Ceriodaphnia dubia cul‐turing and testing are commonly used, little or no data exist on whether toxicity varies with the diet. This study evaluated several combinations of yeast‐Cerophyl‐trout chow (YCT), Selenastrum capricornutum , and Selenastrum capricornutum ‐Cerophyl foods for routine culture performance and the sensitivity of the offspring in subsequent acute toxicity tests with effluents. Variations in the diets included use of a vitamin‐fortified yeast added to the YCT, algae ( Selenastrum capricornutum ) grown in two different algal media, and different feeding rates of the algae‐Cerophyl diets. Eleven diets were evaluated in a multigeneration feeding study, but only seven were used in subsequent toxicity tests. The young produced from each of the seven diets were tested in 48‐h acute tests with three different effluents across the generations. Toxicity tests with the effluents gave LC50s that were within a factor of two of one another, regardless of the food used for culturing. These results indicate that several diets are satisfactory for culturing Ceriodaphnia dubia and that the results of the toxicity tests are comparable.