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, Lauren M Schiebelhut Life & Environmental Sciences, University of California , Merced, CA , United States Search for other works by this author on: Oxford Academic Melissa B DeBiasse Life & Environmental Sciences, University of California , Merced, CA , United States Department of Biology, Radford University , Radford, VA , United States Search for other works by this author on: Oxford Academic Lars Gabriel Institute for Mathematics and Computer Science & Center for Functional Genomics of Microbes, University of Greifswald , Greifswald , Germany Search for other works by this author on: Oxford Academic Katharina J Hoff Institute for Mathematics and Computer Science & Center for Functional Genomics of Microbes, University of Greifswald , Greifswald , Germany Search for other works by this author on: Oxford Academic Michael N Dawson Life & Environmental Sciences, University of California , Merced, CA , United States Corresponding author: Life & Environmental Sciences, University of California, Merced, CA, United States. Email: mdawson@ucmerced.edu Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0002-5417-5426 Journal of Heredity, Volume 115, Issue 1, January 2024, Pages 86–93, https://doi.org/10.1093/jhered/esad054
Published:
20 September 2023
Article history
Received:
10 June 2023
Revision received:
29 July 2023
Published:
20 September 2023
Accepted:
29 September 2023
Corrected and typeset:
27 October 2023
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Lauren M Schiebelhut, Melissa B DeBiasse, Lars Gabriel, Katharina J Hoff, Michael N Dawson, A reference genome for ecological restoration of the sunflower sea star, Pycnopodia helianthoides, Journal of Heredity, Volume 115, Issue 1, January 2024, Pages 86–93, https://doi.org/10.1093/jhered/esad054
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Abstract
Wildlife diseases, such as the sea star wasting (SSW) epizootic that outbroke in the mid-2010s, appear to be associated with acute and/or chronic abiotic environmental change; dissociating the effects of different drivers can be difficult. The sunflower sea star, Pycnopodia helianthoides, was the species most severely impacted during the SSW outbreak, which overlapped with periods of anomalous atmospheric and oceanographic conditions, and there is not yet a consensus on the cause(s). Genomic data may reveal underlying molecular signatures that implicate a subset of factors and, thus, clarify past events while also setting the scene for effective restoration efforts. To advance this goal, we used Pacific Biosciences HiFi long sequencing reads and Dovetail Omni-C proximity reads to generate a highly contiguous genome assembly that was then annotated using RNA-seq-informed gene prediction. The genome assembly is 484 Mb long, with contig N50 of 1.9 Mb, scaffold N50 of 21.8 Mb, BUSCO completeness score of 96.1%, and 22 major scaffolds consistent with prior evidence that sea star genomes comprise 22 autosomes. These statistics generally fall between those of other recently assembled chromosome-scale assemblies for two species in the distantly related asteroid genus Pisaster. These novel genomic resources for P. helianthoides will underwrite population genomic, comparative genomic, and phylogenomic analyses—as well as their integration across scales—of SSW and environmental stressors.
Asteroidea, climate change, conservation, kelp forest, ocean health, sea star wasting
© The Author(s) 2023. Published by Oxford University Press on behalf of The American Genetic Association. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/pages/standard-publication-reuse-rights)
Issue Section:
Genome Resources
Corresponding Editor: Rachel Meyer Rachel Meyer Corresponding Editor Search for other works by this author on: Oxford Academic
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