Chromosome-level genome assembly of the freshwater snail Bellamya purificata (Caenogastropoda)

To date, most cultured freshwater snails are sourced from slow-growing wild populations. [...]to promote the development of snail aquaculture, freshwater snail breeding programs, especially for B. purificata, have become a priority. [...]generation sequencing technologies can expand sequencing reads and provide superior platforms to produce complete and high-quality genomes. Comparison of the B. purificata genome with that of eight other mollusk species (Pomacea canaliculata, Gastropoda; Biomphalaria glabrata, Gastropoda; A. fulica, Gastropoda; Crassostrea gigas, Bivalvia; Lingula anatina, Lingulata; Lottia gigantea, Gastropoda; Mytilus galloprovincialis, Bivalvia; Patinopecten yessoensis, Bivalvia) revealed 8 943 gene families and 990 single-copy genes. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis of the positively selected genes showed enrichment in G proteincoupled protein receptor activity, acetylcholine receptor activity, and taste transduction function (Figure 1F, G).