A Chromosome-Level Genome Assembly of the Mandarin Fish (Siniperca chuatsi)

• DOI: 10.3389/fgene.2021.671650
• Publication Date: 2021-06-23T05:30:56Z
• Authors: Weidong Ding; Xinhui Zhang; Xiaomeng Zhao; Wu Jing; Zheming Cao; Jia Li; Yu Huang; Xinxin You; Min Wang; Qiong Shi; Xuwen Bing
• Keywords: Sequence assembly; Mandarin Chinese

The mandarin fish, Siniperca chuatsi , is an economically important perciform species with widespread aquaculture practices in China. Its special feeding habit, acceptance of only live prey fishes, contributes to its delicious meat. However, little currently known about related genetic mechanisms. Here, we performed whole-genome sequencing and assembled a 758.78 Mb genome assembly the scaffold contig N50 values reaching 2.64 46.11 Kb, respectively. Approximately 92.8% scaffolds were ordered onto 24 chromosomes (Chrs) assistance previously established linkage map. chromosome-level contained 19,904 protein-coding genes, which 19,059 (95.75%) genes functionally annotated. behavior fish could be attributable interaction variety sense organs (such as vision, smell, endocrine organs). Through comparative genomics analysis, some interesting results found. For example, olfactory receptor (OR) (especially beta delta types) underwent significant expansion, endocrinology/vision npy spexin opsin presented various functional mutations. These may contribute habit by strengthening visual systems. Meanwhile, identified sex-related quantitative trait locis (QTLs) localized on Chr14 Chr17, 155 toxin proteins predicted from genome. In summary, high-quality provides novel insights into offers valuable resource for quality improvement this freshwater fish.