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Description: |
8 pages : illustrations, tables ; 27 cm. |
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General Note: |
Partially supported by the National Institutes of Health and the Great Lakes Fishery Commission. |
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With Note: |
With: Laboratory efficacy of 3-trifluoromethyl-4-nitrophenol (TFM) as a lampricide / by Verdel K. Dawson, Kenneth B. Cumming, and Philip A. Gilderhus (No. 63) -- Accumulation and loss of residues of 3-trifluoromethyl-4-nitrophenol (TFM) in fish muscle tissue : laboratory studies / by Joe B. Sills and John L. Allen (No. 65) -- Residues of 3-trifluoromethyl-4-nitrophenol (TFM) in a stream ecosystem after treatment for control of sea lampreys / by Philip A. Gilderhus, Joe B. Sills, and John L. Allen. (No. 66). |
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Bibliography Note: |
Includes bibliographical references (page 8). |
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Summary, Etc. Note: |
Abstract: Developing sea lampreys in stages 1 (zygote) through 17 (burrowing prolarva) were exposed for 24 hours to a 10-mg/liter (active ingredient) solution of 3-trifluoromethyl-4-nitrophenol (TFM) at 18 degrees Centigrade. Embryonic development, incidence of abnormalities, and mortality in the experimentals were compared with those in unexposed controls. Although exposed embryos in the first eight developmental stages exhibited no immediate effects, the number of viable stage-18 larvae produced was drastically reduced, incidence of abnormalities increased markedly, hatching was sometimes delayed, and hemoglobin production was retarded or lackingl. The laboratory findings suggest that the treatment of streams with TFM at the customary rates probably does not effect a complete kill of sea lampreys in all developmental stages. |