Diversity of sea bass pathogen strains highlights challenge in Mediterranean aquaculture
A new study analyzing three strains of the bacterium Vibrio harveyi found among farmed sea bass in the Mediterranean has underlined the diversity of the pathogen, which poses a severe threat to the region’s aquaculture.
Tilapia lake virus (TiLV) is an emerging threat to aquaculture, having been discovered in 2014 and now reported in 16 countries.
China is now responsible for over 70% of global farmed-fish production. Finding appropriate responses to fish disease has not been as rapid, researchers from Huazhong Agricultural University acknowledged — but new options in development suggest that the nation is fast catching up.
Aquaculture needs to change its “widespread and unrestricted” use of prophylactic antibiotics and accelerate the move toward vaccination and more sanitary practices globally, according to Felipe C. Cabello, MD, professor emeritus of microbiology and immunology at New York Medical College.
Supplementing the diets of farmed fish with seaweeds or their extracts has “substantial positive impacts” on fish health, growth and survival, according to new analysis by scientists.
Cleaner fish have proved an effective alternative method of sea louse control — but their widespread introduction brings with it a new threat of pathogens and parasites, and available treatments are falling short of requirements.