Lucy Hannah*
Infectious diseases, including those that are bacterial in origin, continue to pose a threat to the aquaculture industry. Aquaculture has displaced capture fisheries as the primary method for producing fish protein, despite the disease burden. The culture of salmonids, which are (a) the most valuable finfish per unit of weight and (b) under unique pressure due to overfishing, is an appealing sector within this industry. Antibiotics are frequently used to combat bacterial disease outbreaks because there are still knowledge gaps regarding fish immunity, which results in vaccines that are not as effective as those for terrestrial species. Even though it works, this method makes it more likely that antibiotic-resistant bacteria will grow. A deeper comprehension of the immune system of teleosts is necessary in order to facilitate the development of vaccines and/or alternative treatments. The state of teleost antibacterial immunity in salmonid aquaculture is highlighted in this review. In addition, the effectiveness of the current approaches to fighting bacterial diseases in salmonid aquaculture will be discussed. In the future, reducing aquaculture losses will be made easier by filling the knowledge gaps in immunology that have been highlighted here.
KeywordsAquaculture; Salmonids; Bacterial pathogens; Comparative immunology; Adjuvants
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