Evidence map›Paper›PMID 42443221›Full record

ArticleScientific data2026

Chromosome-scale genome assembly and annotation of Jonah's icefish Neopagetopsis ionah.

Shunan Cao, Wenhao Li, Gianfranco Santovito, Minhao Gao, Gaojing Fan, Shouwen Jiang, Ruiqin Hu, Wanying Zhai, Zhiwei Gao, Bo Xu and 2 more

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PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific data, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Shunan Cao *Arctic Yellow River Earth System National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China.
Wenhao Li *International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China.
Gianfranco SantovitoDepartment of Biology, University of Padova, 35131, Padova, Italy.
Minhao GaoAntarctica Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China.
Gaojing FanNational Arctic and Antarctic Data Center, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China.
Shouwen JiangInternational Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China.
Ruiqin HuInternational Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China.
Wanying ZhaiInternational Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China.
Zhiwei GaoAntarctica Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China.
Bo XuAntarctica Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China.
Qianghua XuInternational Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China. xuqhua@vip.sohu.com.
Yong YuNational Arctic and Antarctic Data Center, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, 201209, China. yuyong@pric.org.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Jonah's icefish Neopagetopsis ionah is endemic to the frigid, oxygen-rich waters of the Southern Ocean. This species has evolved remarkable genetic and physiological adaptations, notably the loss of functional hemoglobin, making it an exemplary vertebrate model for studying evolutionary loss is gain and adaptation to extreme environments. In this study, we present a chromosome-level genome assembly of N. ionah (1.27 Gb) integrating Illumina, PacBio HiFi, and Hi-C sequencing data. The assembly comprises 24 chromosomes, with an anchoring efficiency of 96.8%. Genome annotation revealed that 42.14% of the genome consists of repetitive elements and identified 31,777 protein-coding genes. The high genomic collinearity with related species corroborates the assembly's accuracy at the macroscale. This high-quality reference genome provides a crucial resource for elucidating the genetic basis of cold adaptation, trait loss, and the unique cardiovascular innovations in Antarctic icefish.

Indexed as

ChromosomesFishesGenomeAnimalsAntarctic RegionsMolecular Sequence Annotation

Identifiers

PMID42443221
PMCPMC13619566

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.