A chromosome-level genome assembly of the red drum, Sciaenops ocellatus  

作　　者：Tianjun Xu Ye Li Qing Chu Weiwei Zheng 

机构地区：[1]Laboratory of Fish Molecular Immunology,College of Fisheries and Life Science,Shanghai Ocean University,Shanghai,201306,China [2]Laboratory of Marine Biology and Biotechnology,Qingdao National Laboratory for Marine Science and Technology,Qingdao,266200,China [3]Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources(Shanghai Ocean University),Ministry of Education,201306,China [4]National Pathogen Collection Center for Aquatic Animals,Shanghai Ocean University,201306,China

出　　处：《Aquaculture and Fisheries》2021年第2期178-185,共8页渔业学报（英文）

基　　金：This work was supported by National Key Research and Development Project(2018YFD0900301).

摘　　要：Sciaenops ocellatus,also known as red drum,is a valuable commercial fish that is widely cultured in China.In recent years,while the genetic research and molecular breeding on S.ocellatus has been widely performed,whole-genome resources are lacking.In our study,we assembled the S.ocellatus genome by high-quality genome sequencing,followed by complete annotation.The size of final genome was 686.62 Mb and N50 length of contig and scaffold is 99.71 Kb and 25.62 Mb,respectively.Using the Hi-C technology,we obtained 24 pseudochromosomes containing 87.82%of the total scaffolds.We annotated 20,053 protein-coding genes in S.ocellatus genome,of which 99.93%were homologous to proteins in different database.Totally,we detected 133.54 Mb repeat sequences,which accounts for 19.45%of the assembly.According to the phylogenetic analysis,S.ocellatus is most closed to L.croea with a divergence time about 30 million years ago.We assembled a high-quality genome that will be a valuable resource to further study the biology of S.ocellatus and will inform how to breed the red drum to enhance its economic traits.

关 键 词：Red drum WHOLE-GENOME Chromosomal assembly PHYLOGENETIC Genome evolution 

分 类 号：S917[农业科学—水产科学]