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Comparative genomics points to ecological drivers of genomic divergence among intertidal limpets
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  • Emily Giles,
  • Vanessa Gonzalez,
  • Paulina Carimán,
  • Carlos Leiva,
  • Ana Victoria Suescún,
  • Sarah Lemer,
  • Marie-Laure Guillemin,
  • Daniel Ortiz-Barrientos,
  • Pablo Saenz-Agudelo
Emily Giles
Universidad Austral de Chile

Corresponding Author:emily.c.giles@gmail.com

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Vanessa Gonzalez
National Museum of Natural History
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Paulina Carimán
El Instituto de Ciencias Ambientales y Evolutivas
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Carlos Leiva
University of Guam Marine Laboratory
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Ana Victoria Suescún
El Instituto de Ciencias Ambientales y Evolutivas
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Sarah Lemer
University of Guam Marine Laboratory
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Marie-Laure Guillemin
Núcleo Milenio MASH Instituto de Ciencias Ambientales y Evolutivas
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Daniel Ortiz-Barrientos
The University of Queenland
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Pablo Saenz-Agudelo
El Instituto de Ciencias Ambientales y Evolutivas
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Abstract

Comparative genomic studies of closely related taxa are important for our understanding of the causes of divergence on a changing Earth. This being said, the genomic resources available for marine intertidal molluscs are limited and currently, there are few publicly available high-quality annotated genomes for intertidal habitats and for molluscs in general. Here we report transcriptome assemblies for six species of Patellogastropoda and genome assemblies and annotations for three of these species (Scurria scurra, Scurria viridula, and Scurria zebrina). Comparative analysis using these genomic resources suggest that there was a large gene family contraction during the early evolutionary history of Patellogastropoda (140-170 Mya) and recently diverging lineages (10-20 Mya) have experienced similar amounts of contractions and expansions but across different gene families. Furthermore, differences among recently diverged species are reflected in variation in the amount of coding and noncoding material in genomes, such as amount of repetitive elements and lengths of transcripts and introns and exons. Additionally, functional ontologies of species-specific and duplicated genes together with demographic inference support the finding that recent divergence among members of the genus Scurria aligns with their unique ecological characteristics. Overall, the resources presented here will be extremely valuable for future studies of adaptation in molluscs and in intertidal habitats as a whole.
25 Jul 2024Submitted to Molecular Ecology Resources
26 Jul 2024Review(s) Completed, Editorial Evaluation Pending
26 Jul 2024Submission Checks Completed
26 Jul 2024Assigned to Editor
28 Jul 2024Reviewer(s) Assigned
02 Sep 2024Editorial Decision: Revise Minor
25 Sep 20241st Revision Received
27 Sep 2024Submission Checks Completed
27 Sep 2024Assigned to Editor
27 Sep 2024Review(s) Completed, Editorial Evaluation Pending
01 Oct 2024Reviewer(s) Assigned