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Gutierrez, Alejandro P.; Selly, Sarah-Louise Counter; Pountney, Samuel M.; Taggart, John B.; Kokkinias, Panagiotis; Cavrois-Rogacki, Thomas; Fernandez, Eduardo Jimenez; Migaud, Herve; Lein, Ingrid; Davie, Andrew; Bekaert, Michaël
Genomics (San Diego, Calif.), November 2023, 2023-Nov, 2023-11-00, 20231101, Letnik: 115, Številka: 6Journal Article
Cleaner fish species have gained great importance in the control of sea lice, among them, lumpfish (Cyclopterus lumpus) has become one of the most popular. Lumpfish life cycle has been closed, and hatchery reproduction is now possible, however, current production is reliant on wild caught broodstock to meet the increasing demand. Selective breeding practices are called to play an important role in the successful breeding of most aquaculture species, including lumpfish. In this study we analysed a lumpfish population for the identification of genomic markers linked to production traits. Sequencing of RAD libraries allowed us to identify, 7193 informative markers within the sampled individuals. Genome wide association analysis for sex, weight, condition factor and standard length was performed. One single major QTL region was identified for sex, while nine QTL regions were detected for weight, and three QTL regions for standard length. A total of 177 SNP markers of interest (from QTL regions) and 399 high Fst SNP markers were combined in a low-density panel, useful to obtain relevant genetic information from lumpfish populations. Moreover, a robust combined subset of 29 SNP markers (10 associated to sex, 14 to weight and 18 to standard length) provided over 90% accuracy in predicting the animal's phenotype by machine learning. Overall, our findings provide significant insights into the genetic control of important traits in lumpfish and deliver important genomic resources that will facilitate the establishment of selective breeding programmes in lumpfish. •SNP markers were developed for the lumpfish Cyclopterus lumpus.•Total 7193 SNPs discovered, encompassing the 25 chromosomes of genome.•Sex-associated and growth-related SNPs are reported.•A set of 29 robust SNP markers provids over 90% accuracy in phenotype predicting.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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