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<br />342 <br /> <br />CHAPTER 14 <br /> <br />Figure 14.3 A potassium permanganale drip station used to detoxify rotenone in streams <br />at the downstream end of reaches treated to control undesirable fish species. <br /> <br /> <br />added in an amount equal to the rotenone used plus the permanganate demand of <br />the water (Figure 14.3; Davies and Shelton 1983). <br /> <br />14.4.5.2 Antimycin <br /> <br />Antimycin (Fintrol is the registered name) is an antibiotic and is the only other <br />compound registered as a general fish toxicant. It is less commonly used than <br />rotenone because of limited availability. Fish absorb the chemical through the gills <br />and are killed by interruption of respiration within the body cells. Antimycin is <br />available only in a liquid form from a single supplier (Aquabiotics Corporation, <br />Bainbridge Island, Washington). <br />Antimycin is an effective fish toxicant in soft-water streams, lakes, and ponds <br />and will kill fertilized fish eggs. The first reported use of antimycin was in 1963 <br />(Lopinot 1975). Antimycin does not elicit an avoidance response in fish and it is <br />highly toxic to some rotenone-resistant fish. Because antimycin is available only <br />in a liquid formulation, it is not as effective in deep lakes as the sand-based <br />