Antibacterial treatment of lumpfish (Cyclopterus lumpus) experimentally challenged with Vibrio anguillarum, atypical Aeromonas salmonicida and Pasteurella atlantica

Abstract

Lumpfish (Cyclopterus lumpus L.), also known as lumpsucker, are now farmed and used as cleaner fish to remove sea lice from farmed Atlantic salmon in Europe and Canada (Powell et al., 2018;Treasurer, 2018;Haugland et al., 2020). In Norway, the number of farmed lumpfish has increased rapidly in recent years and 34 million lumpfish were deployed in 2020 (http://www.fiske ridir.no). High mortality among lumpfish has been reported, most caused by bacterial infections with atypical Aeromonas salmonicida, Vibrio spp., Pasteurella sp.

Management and Mitigation of Vibriosis in Aquaculture: Nanoparticles as Promising Alternatives

“…El-Gohary et al [ 19 ] reported that the mortality rate of infected Nile tilapia fish ( Oreochromis niloticus ) by V. alginolyticus was reduced after being treated with florfenicol (25 mg/kg), enrofloxacin (50 mg/kg), and oxytetracycline (50 mg/kg) for 7 days. In another study, orally administered 10 and 20 mg/kg of florfenicol, 25 mg/kg of oxolinic acid, and 25 mg/kg of flumequine were found to help lower cumulative mortality in lumpfish ( Cyclopterus lumpus ) infected by V. anguillarum [ 20 ]. Treatment with oxolinic acid combined with oxytetracycline showed positive effects in white shrimp ( Penaeus vannamei ) challenged with V. parahaemolyticus .…”