Evaluation of fungicides for Haliphthoros milfordensis and their toxicity to juvenile European lobsters

Abstract

Twenty-two potentially fungitoxic compounds were evaluated for their in vitro inhibition of the mycelial growth of Haliphthoros milfordensis. Chemicals with a minimum inhibitory concentration of 10 ppm or less were further tested for toxicity to juvenile European lobsters. Of these compounds, malachite green and Furanace had the lowest minimum inhibitory concentrations at 0.25 and 2.5 ppm respectively. Acriflavine, crystal violet, methylene blue, nifuroxime, butyl paraben and chloroxine were inhibitory to the fungus at a concentration of 10 ppm. Dip and swab applications were tested to assess in vivo toxicity to lobsters of the effective chemicals.