A genome assembly of the Atlantic chub mackerel (Scomber colias): a valuable teleost fishing resource

GigaByte. 2022 Feb 14:2022:gigabyte40. doi: 10.46471/gigabyte.40. eCollection 2022.

Abstract

The Atlantic chub mackerel, Scomber colias (Gmelin, 1789), is a medium-sized pelagic fish with substantial importance in the fisheries of the Atlantic Ocean and the Mediterranean Sea. Over the past decade, this species has gained special relevance, being one of the main targets of pelagic fisheries in the NE Atlantic. Here, we sequenced and annotated the first high-quality draft genome assembly of S. colias, produced with PacBio HiFi long reads and Illumina paired-end short reads. The estimated genome size is 814 Mbp, distributed into 2,028 scaffolds and 2,093 contigs with an N50 length of 4.19 and 3.34 Mbp, respectively. We annotated 27,675 protein-coding genes and the BUSCO analyses indicated high completeness, with 97.3% of the single-copy orthologs in the Actinopterygii library profile. The present genome assembly represents a valuable resource to address the biology and management of this relevant fishery. Finally, this genome assembly ranks fourth in high-quality genome assemblies within the order Scombriformes and first in the genus Scomber.

Grants and funding

This research was funded by COMPETE 2020, Portugal 2020, and the European Union through the ERDF (grant number 031342), and by FCT through national funds (PTDC/CTA-AMB/31342/2017), and is part of the CIIMAR-lead initiative Portugal-Fishomics. The Foundation for Science and Technology (FCT) Portugal supported AMM (DFA/BD/8069/2020), AGS (SFRH/BD/137935/2018), AV (DL57/2016), NA (DFA/BD/6218/2020). RRdF thanks the Villum Foundation for its funding of the Center for Macroecology, Evolution, and Climate (DNRF96).