Genomics of cold adaptations in the Antarctic notothenioid fish radiation

Iliana Bista (), Jonathan M. D. Wood, Thomas Desvignes, Shane A. McCarthy, Michael Matschiner, Zemin Ning, Alan Tracey, James Torrance, Ying Sims, William Chow, Michelle Smith, Karen Oliver, Leanne Haggerty, Walter Salzburger, John H. Postlethwait, Kerstin Howe, Melody S. Clark, H. William Detrich, C.-H. Christina Cheng, Eric A. Miska and Richard Durbin ()
Additional contact information
Iliana Bista: Wellcome Genome Campus
Jonathan M. D. Wood: Wellcome Genome Campus
Thomas Desvignes: University of Oregon, Institute of Neuroscience, 1254 University of Oregon
Shane A. McCarthy: Wellcome Genome Campus
Michael Matschiner: University of Oslo, Natural History Museum, University of Oslo
Zemin Ning: Wellcome Genome Campus
Alan Tracey: Wellcome Genome Campus
James Torrance: Wellcome Genome Campus
Ying Sims: Wellcome Genome Campus
William Chow: Wellcome Genome Campus
Michelle Smith: Wellcome Genome Campus
Karen Oliver: Wellcome Genome Campus
Leanne Haggerty: Wellcome Genome Campus
Walter Salzburger: University of Basel, Zoological Institute, Department of Environmental Sciences
John H. Postlethwait: University of Oregon, Institute of Neuroscience, 1254 University of Oregon
Kerstin Howe: Wellcome Genome Campus
Melody S. Clark: British Antarctic Survey, High Cross
H. William Detrich: Northeastern University, Department of Marine and Environmental Sciences, Marine Science Centre
C.-H. Christina Cheng: University of Illinois
Eric A. Miska: Wellcome Genome Campus
Richard Durbin: Wellcome Genome Campus

Nature Communications, 2023, vol. 14, issue 1, 1-16

Abstract: Abstract Numerous novel adaptations characterise the radiation of notothenioids, the dominant fish group in the freezing seas of the Southern Ocean. To improve understanding of the evolution of this iconic fish group, here we generate and analyse new genome assemblies for 24 species covering all major subgroups of the radiation, including five long-read assemblies. We present a new estimate for the onset of the radiation at 10.7 million years ago, based on a time-calibrated phylogeny derived from genome-wide sequence data. We identify a two-fold variation in genome size, driven by expansion of multiple transposable element families, and use the long-read data to reconstruct two evolutionarily important, highly repetitive gene family loci. First, we present the most complete reconstruction to date of the antifreeze glycoprotein gene family, whose emergence enabled survival in sub-zero temperatures, showing the expansion of the antifreeze gene locus from the ancestral to the derived state. Second, we trace the loss of haemoglobin genes in icefishes, the only vertebrates lacking functional haemoglobins, through complete reconstruction of the two haemoglobin gene clusters across notothenioid families. Both the haemoglobin and antifreeze genomic loci are characterised by multiple transposon expansions that may have driven the evolutionary history of these genes.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-38567-6 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38567-6

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-38567-6

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().