Iodophore disinfections of muskellunge eggs under intensive culture in hatcheries

The iodophor Povidone-Iodine (1% active I2) was used at three concentrations, 100, 28, and 13 mg/L (1:100,1:350, and 1:750) for 10 min, in an attempt to disinfect fertilized eggs of muskellunge (Esox masquinongy) and to test the efficacy and toxicity of the compound on the eggs of cool-water species. No treatment effect was observed between treatments and controls or among treatments. However, no toxic effects of the iodophor were found at the concentrations of active I2 considered efficacious for salmonids.