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

• Published in: Scientific Data
• Main Authors: Seung Jae Lee, Jinmu Kim, Eun Kyung Choi, Euna Jo, Minjoo Cho, Jeong-Hoon Kim, Hyun Park
• Format: Article in Journal/Newspaper
• Language: English
• Published: Nature Portfolio 2023
• Subjects: Science; Q; Antarctic; The Antarctic; Antarc*; Icefish
• Online Access: https://doi.org/10.1038/s41597-023-02561-w; https://doaj.org/article/92a129ea548c48a18b07c4e95f8aa7c6

Abstract 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.