A chromosome-level reference genome of the Antarctic blackfin icefish Chaenocephalus aceratus

• Published in: Scientific Data
• Main Authors: Lee, Seung Jae, Kim, Jinmu, Choi, Eun Kyung, Jo, Euna, Cho, Minjoo, Kim, Jeong-Hoon, Park, Hyun
• Format: Text
• Language: English
• Published: Nature Publishing Group UK 2023
• Subjects: Data Descriptor; Antarc*; Antarctic; Icefish
• Online Access: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10522714/; http://www.ncbi.nlm.nih.gov/pubmed/37752129; https://doi.org/10.1038/s41597-023-02561-w

The blackfin Icefish (Chaenocephalus aceratus) belongs to the family Channichthyidae and the suborder Notothenioidei which lives in the Antarctic. We corrected the mis-scaffolds in the previous linkage map results by Hi-C analysis to obtain improved results for chromosome-level genome assembly. The final assembly analysis resulted in a total of 3,135 scaffolds, a genome size of 1,065.72 Mb, and an N50 of 33.46 Mb. 820.24 Mb, representing 88.88% of the total genome, is anchored to 24 chromosomes. The final gene set of 38,024 genes, including AFGPs, was annotated using RNA evidence, proteins, and ab-initio predictions. The complete percentage of BUSCO analysis is 92.7%. In this study, we aim to contribute to the study of polar fishes by improving the genome sequences of the blackfin icefish with the AFGP genes belonging to the Notothenoidei.