Genomics of habitat choice and adaptive evolution in a deep-sea fish

Gaither, Michelle R., Gkafas, Georgios A., de Jong, Menno, Sarigol, Fatih, Neat, Francis, Regnier, Thomas, Moore, Daniel, Gröcke, Darren R., Hall, Neil ORCID:, Liu, Xuan, Kenny, John, Lucaci, Anita, Hughes, Margaret, Haldenby, Sam and Hoelzel, A. Rus (2018) Genomics of habitat choice and adaptive evolution in a deep-sea fish. Nature Ecology and Evolution, 2 (4). pp. 680-687. ISSN 2397-334X

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Intraspecific diversity promotes evolutionary change, and when partitioned among geographic regions or habitats can form the basis for speciation. Marine species live in an environment that can provide as much scope for diversification in the vertical as in the horizontal dimension. Understanding the relevant mechanisms will contribute significantly to our understanding of eco-evolutionary processes and effective biodiversity conservation. Here, we provide an annotated genome assembly for the deep-sea fish Coryphaenoides rupestris and re-sequencing data to show that differentiation at non-synonymous sites in functional loci distinguishes individuals living at different depths, independent of horizontal spatial distance. Our data indicate disruptive selection at these loci; however, we find no clear evidence for differentiation at neutral loci that may indicate assortative mating. We propose that individuals with distinct genotypes at relevant loci segregate by depth as they mature (supported by survey data), which may be associated with ecotype differentiation linked to distinct phenotypic requirements at different depths.

Item Type: Article
Uncontrolled Keywords: ecology, evolution, behavior and systematics,ecology,sdg 13 - climate action,sdg 14 - life below water ,/dk/atira/pure/subjectarea/asjc/1100/1105
Faculty \ School: Faculty of Science > School of Biological Sciences
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Depositing User: LivePure Connector
Date Deposited: 19 Feb 2021 01:04
Last Modified: 22 Oct 2022 08:35
DOI: 10.1038/s41559-018-0482-x


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