17/09/2023
Our recent publication
ABSTRACT
Rainbow is a salmonid species that benefit aquaculture, wildlife fisheries, and commercial fish farming. Because of their economic worth, rainbow 2trout are extensively used as model fish in various scientific fields. From an evolutionary genomic standpoint, the rainbow genome is truly intriguing because of a whole duplication event along salmon fishing lines 88–96 million years ago. Because of the development of nextgeneration sequencers, a wide variety of genomic technologies, including whole-genome sequencing, are now accessible in this species. Several instances of whole-genome duplication (WGD) have affected the history of vertebrate animals, and they are often related to adaptive radiation or developmental progress. Due to an additional cycle of WGD, the rainbow genome offers a chance to study the early evolutionary destiny of the same vertebrate genome, and researchers found that the subgenomes of the two forebears remained remarkably identical after 100 million years of evolution. MiRNAs, on the other hand, were essentially wholly duplicated copies of their genome. The completion of genome sequencing by researchers opens up new opportunities for aquaculture, which is a critical step toward addressing specific issues in trout farming, such as disease resistance and identifying specific strains with higher growth potential or better adapted to marine growing conditions. The presence of various viral diseases in the salmon and trout industry has highlighted the possibility of naturally resistant rainbow trout reared in seawater for the generation of smoked filets from larger fish weighing over 3 kg. This chapter presents a synoptic assessment of current knowledge on rainbow trout genomics and what molecular evidence has already been discovered due to functional genomics.