Advances in Aquaculture Genetics and Genomics

Dear Colleagues,

The main objective of the Special Issue "Advances in Aquaculture Genetics and Genomics" is to update the knowledge of molecular and quantitative genetic methods applied to the most important farmed species. In recent decades, advances in high-throughput sequencing technology have revealed new opportunities for genetic and genomic research in various fields, including aquaculture. The rapid development of new sequencing technology has made the following methods available: whole-genome sequencing (WGS) (using long-read sequencing technologies or hybrid methods), low-coverage whole-genome sequencing (lcWGS), the use of different combinations of high- and low-density SNP panels, new Genotyping-By-Sequencing (GBS) methods, and transcriptomic and metagenomic methods. In particular, high-density panels provide a detailed view of genetic variation, while low-density panels are cheaper and suitable for screening large populations. GBS methods are used to identify genetic markers within the genome, particularly in species with limited genomic resources. They combine DNA sequencing and genotyping to analyze genetic variation.

Genomic selection (GS) of fish populations has become the optimal solution for the selection of quantitative traits that are strongly influenced by the environment and controlled by genes with a minor effect (low heritability traits, restricted to one sex, and disease resistance).

The Genome-Wide Association Study (GWAS) method has become an efficient and powerful tool that facilitates the interpretation of target traits of animals. Currently, the GWAS is widely used in research on fish disease resistance traits.

These advanced genetic and genomic methods have revolutionized the field of fish breeding. They enable more accurate and efficient trait selection, a better understanding of complex traits, and the development of strategies to increase productivity, disease resistance, and other economically and environmentally important traits.

Prof. Dr. Edo Dagaro
Guest Editor

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• high-throughput sequencing
• WGS
• genotyping by sequencing
• genomic selection
• GWAS