Chromosomal-level genome assembly of the long-spined sea urchinDiadema setosum(Leske, 1778)

  1. Hong Kong Biodiversity Genomics Consortium
  2. Project Coordinator and Co-Principal Investigators
  3. Jerome H.L. Hui
  4. Ting Fung Chan
  5. Leo L. Chan
  6. Siu Gin Cheung
  7. Chi Chiu Cheang
  8. James K.H. Fang
  9. Juan D. Gaitan-Espitia
  10. Stanley C.K. Lau
  11. Yik Hei Sung
  12. Chris K.C. Wong
  13. Kevin Y.L. Yip
  14. Yingying Wei
  15. DNA extraction, library preparation and sequencing
  16. Wai Lok So
  17. Genome assembly and gene model prediction
  18. Wenyan Nong
  19. Sample collector, animal culture and logistics
  20. Apple P.Y. Chui
  21. Thomas H.W. Fong
  22. Ho Yin Yip
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Abstract

The long-spined sea urchinDiadema setosumis an algal and coral feeder widely distributed in the Indo-Pacific and can cause severe bioerosion on the reef community. Nevertheless, the lack of genomic information has hindered the study its ecology and evolution. Here, we report the chromosomal-level genome (885.8 Mb) of the long-spined sea urchinD. setosumusing a combination of PacBio long-read sequencing and Omni-C scaffolding technology. The assembled genome contained scaffold N50 length of 38.3 Mb, 98.1 % of BUSCO (Geno, metazoa_odb10) genes, and with 98.6% of the sequences anchored to 22 pseudo-molecules/chromosomes. A total of 27,478 genes including 23,030 protein-coding genes were annotated. The high-quality genome ofD. setosumpresented here provides a significant resource for further understanding on the ecological and evolutionary studies of this coral reef associated sea urchin.

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