Chromosome-scale Genome Assembly of the Rough Periwinkle Littorina saxatilis.

ABSTRACT: The intertidal gastropod Littorina saxatilis is a model system to study speciation and local adaptation. The repeated occurrence of distinct ecotypes showing different levels of genetic divergence makes L. saxatilis particularly suited to study different stages of the speciation continuum in the same lineage. A major finding is the presence of several large chromosomal inversions associated with the divergence of ecotypes and, specifically, the species offers a system to study the role of inversions in this divergence. The genome of L. saxatilis is 1.35 Gb and composed of 17 chromosomes. The first reference genome of the species was assembled using Illumina data, was highly fragmented (N50 of 44 kb), and was quite incomplete, with a BUSCO completeness of 80.1% on the Metazoan dataset. A li

SUBMITTER: De Jode A 

PROVIDER: S-EPMC11050657 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature