Abstract
Understanding of adaptation and evolution of organisms in the deep sea requires more genomic resources. Zoroaster cf. ophiactis is a sea star in the family Zoroasteridae occurring exclusively in the deep sea. In this study, a chromosome-level genome assembly for Z. cf. ophiactis was generated by combining Nanopore long-read, Illumina short-read, and Hi-C sequencing data. The final assembly was 1,002.0 Mb in length, with a contig N50 of 376 Kb and a scaffold N50 of 40.4 Mb, and included 22 pseudo-chromosomes, covering 92.3% of the assembly. Completeness analysis evaluated with BUSCO revealed that 95.91% of the metazoan conserved genes were complete. Additionally, 39,426 protein-coding genes were annotated for this assembly. This chromosome-level genome assembly represents the first high-quality genome for the deep-sea Asteroidea, and will provide a valuable resource for future studies on evolution and adaptation of deep-sea echinoderms.
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