Masoten (Dylox) As A Control For Clam Shrimp In Hatchery Production Ponds

Information relative to control of problematical clam shrimp (EubranchiopodaConchostraca) with Masoten (Dylox) was accumulated over a 10. yr period at several Southwestern hatcheries. Laboratory and field studies showed that control could be achieved with single applications of Masoten as low as 0.01 mgl (active ingredient). No deleterious effects on fry, fingerlings, or adult fish of several species were noted. Decomposition of the chemical, as well as effects on plankton and bottom fauna, are discussed. The paper places on record the efficacy of Masoten against clam shrimp, a level of treatment for same, and a suggested approach to control.

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