A High-Quality Chromosome-Level Genome Assembly of a Snail Cipangopaludina cathayensis (Gastropoda: Viviparidae)

Cipangopaludina cathayensis (Gastropoda: Prosobranchia; Mesogastropoda; Viviparidae) is widely distributed in the freshwater habitats of China. It an economically important snail with high edible and medicinal value. However, genomic resources reference genome this are lacking. In study, we assembled first chromosome-level C. cathayensis. The preliminary assembly was 1.48 Gb size, a contig N50 size 93.49 Mb. sequences were anchored to nine pseudochromosomes using Hi-C data. final after correction Gb, 98.49 Mb scaffold 195.21 rate chromosome 99.99%. A total 22,702 protein-coding genes predicted. Phylogenetic analyses indicated that diverged Bellamya purificata approximately 158.10 million years ago. There 268 expanded 505 contracted gene families when compared its most recent common ancestor. Five putative under positive selection identified (false discovery <0.05). These data provide valuable resource for evolutionary studies family Viviparidae, genetic improvement