Chromosome-level genome assembly of mud snail Bullacta exarata

The mud snail Bullacta exarata, a marine economic shellfish in China. It is a simultaneous androgynous molluscan species, and characteristic of euryhaline distribution and superior growth performance. To further reveal the genetic mechanisms related to environmental adaptation and reproductive traits of B. exarata, we deciphered the genomic resources of B. exarata. This study provides a chromosome - level genome assembly for B. exarata, created by PacBio and Hi - C sequencing. The genome map comprises 18 pseudochromosomes, with a total size of 867.27 Mb, a contig N50 of 4.41 Mb, and a scaffold N50 of 46.10 Mb. A total of 22,494 protein-coding genes were identified, with 21,383 genes annotated across four public databases. Overall, this study provides a foundational resource for future molecular and genetic studies on B. exarata.