||International Study on Artemia. Nutritional Effects in Toxicity Tests: Use of Different Artemia Geographical Strains.
Bengtson, D. A. ;
Beck, A. D. ;
Lussier, S. M. ;
Migneault, D. ;
Olney, C. E. ;
||Rhode Island Univ., Kingston. Dept. of Food Science and Technology. ;Ghant Rijksuniversieit (Belgium). ;Rhode Island Univ., Kingston. Agricultural Experiment Station.;Environmental Research Lab., Narragansett, RI.
||EPA-600/D-84-180 ; ERLN-603
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
A series of experiments was conducted to determine whether feeding marine organisms different geographical strains of Artemia prior to or during a toxicity test could significantly alter the results of the test. In each experiment, the test organisms were produced from laboratory brood stocks and divided into two groups; one was fed Reference brine shrimp, the other was fed San Pablo Bay brine shrimp. When the groups were then used simultaneously in toxicity tests, significant differences in the test results were obtained. The LC50 values for the animals fed Reference Artemia, were always higher than those for animals fed San Pablo Bay Artemia, in certain cases by 2-4 times. Further, some tests were invalidated because of high control mortality in the group fed the San Pablo Bay strain. The findings indicate that the choice of brine shrimp can affect the outcome of a toxicity test, sometimes to the extent that the test is invalid.