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<br />fish quickly eliminate rotenone residues from their <br />body. The maximum residue in fish flesh expected <br />from a rotenone treatment of 5.0 ppm at 74° F would <br />be about 0.15 ppm. <br />Mammals and birds that ingest rotenone by drink- <br />ing treated water or by eating dead fish would simply <br />digest it without any toxic effect. Most warm blooded <br />animals also have effective natural enzymes that <br />would destroy small amounts entering the blood <br />stream. However, hogs are uniquely sensitive and <br />should not be treated with rotenone. <br />Q. Is it safe to eat fish killed by rotenone? <br />A. Calculations that address a worst case situation <br />indicate that a 132 pound person would have to <br />consume 535 pounds of raw fish containing 100 ppb <br />rotenone to acquire a toxic dose. Cooking destroys <br />rotenone so there would be a further loss of any <br />residues during cooking. However, because no toler- <br />ance (acceptable residue level permitted in fish flesh) <br />has been set by EPA, the consumption of rotenone- <br />killed fish cannot be recommended. <br />Q. Do some fish build up resistance to rotenone? <br />A. Some insects are becoming more tolerant of modem <br />pesticides. Since rotenone is not persistent in the <br />environment and because fish reproduce: at a much <br />slower rate than insects, acquired resistance has not <br />been a problem.