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Genomic analyses indicate resilience of a commercially and culturally important marine gastropod snail to climate change
Journal article   Open access   Peer reviewed

Genomic analyses indicate resilience of a commercially and culturally important marine gastropod snail to climate change

Matt J. Nimbs, Curtis Champion, Simon Lobos, Hamish A. Malcolm, Adam D Miller, Kate Seinor, Stephen D A Smith, Nathan Knott, David Wheeler and Melinda Coleman
PeerJ (San Francisco, CA), Vol.11, e16498
23/11/2023
DOI: https://doi.org/10.7717/peerj.16498
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Genomic analyses indicate resilience of a commercially and culturally important marine gastropod snail to climate change2.55 MBDownloadView
Published (Version of record)CC BY V4.0,  Open Access
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Genomic analyses indicate resilience of a commercially and culturally important marine gastropod snail to climate changeView
Published (Version of record)CC BY V4.0,  Open

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Abstract

Aquaculture Fisheries and Fish Science Genetics Marine Biology Climate Change Biology Population Biology Climate adaptation Genetic differentiation Panmixia Genotype x environment
Genomic vulnerability analyses are being increasingly used to assess the adaptability of species to climate change and provide an opportunity for proactive management of harvested marine species in changing oceans. Southeastern Australia is a climate change hotspot where many marine species are shifting poleward. The turban snail, Turbo militaris is a commercially and culturally harvested marine gastropod snail from eastern Australia. The species has exhibited a climate-driven poleward range shift over the last two decades presenting an ongoing challenge for sustainable fisheries management. We investigate the impact of future climate change on T. militaris using genotype-by-sequencing to project patterns of gene flow and local adaptation across its range under climate change scenarios. A single admixed, and potentially panmictic, demographic unit was revealed with no evidence of genetic subdivision across the species range. Significant genotype associations with heterogeneous habitat features were observed, including associations with sea surface temperature, ocean currents, and nutrients, indicating possible adaptive genetic differentiation. These findings suggest that standing genetic variation may be available for selection to counter future environmental change, assisted by widespread gene flow, high fecundity and short generation time in this species. We discuss the findings of this study in the content of future fisheries management and conservation.

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