Arctic charr / Salvelinus alpinus

Salmobase provides two Arctic charr (Salvelinus alpinus) assemblies. Salp_Arthur (Arthur) is the primary assembly in Salmobase. It is an in-house CIGENE preview assembly that has not yet been submitted to public repositories.

Salp_Arthur spans 2,356.04 Mb, with 96.40% of the assembly span in 39 chromosome scaffolds and 1,326 additional unplaced sequences. Its scaffold N50 is 56.80 Mb and contig N50 is 5.59 Mb; gaps (runs of at least 10 Ns) account for 0.0063% of the assembly span.

The alternative fSalAlp1.1 assembly, with 40 chromosome scaffolds and the Saalp_EIv1.0 annotation, was produced through the European Reference Genome Atlas (ERGA) pilot project. It is publicly available from the Zenodo dataset and described by Kurta et al. (2025).

For comparison, the publicly available NCBI reference assembly SLU_Salpinus.1 (GCF_045679555.1) spans 2,367.89 Mb and has a scaffold N50 of 59.64 Mb and a contig N50 of 2.11 Mb (NCBI statistics retrieved 29 October 2026). N50 values describe sequence continuity.