Epidemiology and Control - Bioflavonoids

In the aquaculture industry, the recent bans on the use of malachite green and dimetridizole for the control of a wide range of fish pathogens has left the industry without any suitable control compounds. There is, therefore, an urgent need to find suitable, efficacious replacement compounds to control a variety of fish pathogens. An appropriate strategy is to seek out natural efficacious compounds such as the citrus derived bioflavonoids that may have positive effects on the immune system of farmed fish. From an extensive screening programme within the Parasitology Group, a number of plant extracts have already been shown to impact on the growth dynamics of select pathogenic bacteria (Aeromonas spp., Edwardsiella spp., Streptococcus iniae and Listonella anguillarum) and against the fish fungus Saprolegnia, suggesting they have potential as alternatives to the use of antimicrobials and currently used synthetic chemotherapeutants.