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44" <br />have declined in the face of new-generation, synthetic <br />pesticides that can be mass produced. Fishery needs have <br />continued. <br />This publication discusses how rotenone is used in <br />fishery resource management, describes the testing that <br />has been done, and lists the precautions that have been <br />taken to assure the safety of rotenone to people and to <br />the environment. Its purpose is to provide information <br />based on research findings that will help you better <br />understand fishery uses of rotenone as a fish control <br />agent. <br />Q. What is Rotenone? <br />A. Rotenone is a natural substance contained in the <br />stems and roots of certain tropical plants, such as the <br />Jewel Vine or Flame tree (Derris Spp.), Lacepod <br />(Lonchocarpus spp.), or hoary pea (Tephrosia spp.). <br />Its structure is shown below. <br />OCH3 <br />CHa O <br />0 <br />6 <br />O ,: I <br />O j0 <br />H t 2' CHz <br />C` <br />H CH3 <br />Q. Does rotenone have other names? <br />A. Many products are sold that contain rotenone. Brand <br />names include Chem-Fish, Cube', Derrin, Derris <br />root, Fish-Tox, Nicoulins, Nusyn Nox-fish, Prentox, <br />Noxfish, rotenone dust, and Timbo powder. <br />Q. What other uses are there for rotenone? <br />A. Rotenone is used as a garden insecticide to control <br />chewing insects, has been used as a dust on cattle, <br />and is used as a dog and sheep dip, in addition to its <br />use as a fish control agent.