A genome-wide scan for signatures of recent selection in tilapia

Tilapia is the third most important domesticated food fish in world aquaculture. Artificial selection of Tilapia started in late 1980s and successfully produced many highly productive strains that are well adapted to a wide range of farming conditions. Genetic variation and the genes influencing variation in economically important traits in tilapia strains are not well characterized. In this study, we present a genome-wide identification for signatures of recent selection in tilapia. Using next-generation sequencing technology, we re-sequenced 47 tilapia individuals with a mean of 6-fold genome coverage. We identified a total of 1.43 million high-quality SNPs in the populations using the Broad Institute Nile Tilapia Genome as a reference. We further identified more than a thousand loci in putative selective sweep regions that are defined using a genome-wide extended haplotype homozygosity-based statistics. This initial selective sweep analysis has revealed some interesting candidate genes related to economically important traits such as growth and disease resistance. The results of this study provide a genome-wide map of selection footprints in the tilapia genome and could be important for genetic improvement of the tilapia populations.

Identifier
Source https://data.blue-cloud.org/search-details?step=~01228F9BA3B2983B0C64839C4BF878212C3666E51F3
Metadata Access https://data.blue-cloud.org/api/collections/28F9BA3B2983B0C64839C4BF878212C3666E51F3
Provenance
Instrument Illumina HiSeq 2500; Illumina HiSeq 2000; ILLUMINA
Publisher Blue-Cloud Data Discovery & Access service; ELIXIR-ENA
Contributor Temasek life sciences laboratory
Publication Year 2024
OpenAccess true
Contact blue-cloud-support(at)maris.nl
Representation
Discipline Marine Science
Temporal Coverage Begin 2013-11-01T00:00:00Z
Temporal Coverage End 2013-12-01T00:00:00Z