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Description: |
17 pages : illustrations, tables ; 26 cm |
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With Note: |
With: Acute toxicities of 3-trifluoromethyl-4-nitrophenol (TFM) and 2',5-dichloro-4'-nitrosalicylanilide (Bayer 73) to larvae of the midge Chironomus tentans / by Joseph A. Kawatski, Margaret M. Ledvina, and Carl R. Hansen, Jr. (No. 57) : Acute toxicity of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) to nymphs of mayflies (Hexagenia sp.) / by Calvin R. Fremling (No. 58) : Toxicity and residue dynamics of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) in aquatic invertebrates / by Herman O. Sanders and David F. Walsh. (No. 59). |
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Bibliography Note: |
Includes bibliographical references (page 17). |
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Summary, Etc. Note: |
Abstract: The toxicity of analytical and field grades of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) to unialgal cultures of four green algae, four blue-green algae, and two species of diatoms was examined in 96-hour toxicity tests. Growth was measured by daily optical density readings, cell counts of nonfilamentous species, and a gravimetric determination of maximum standing crop at the end of the tests. Field grade TFM tended to be more toxic than the analytical grade. Growth tests conducted with high concentrations of TFM and subsequent filtration of the cells and resuspension in toxicant-free medium indicated that exposure to TFM at concentrations of 30 mg/liter for 96 hours did not destroy the viability of algal cells but temporarily inhibited growth. |