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RAD sequencing of common whelk, Buccinum undatum, reveals fine-scale population structuring in Europe and cryptic speciation within the North Atlantic.

https://arctichealth.org/en/permalink/ahliterature311083
Source
Ecol Evol. 2021 Mar; 11(6):2616-2629
Publication Type
Journal Article
Date
Mar-2021
Author
Jake Goodall
Kristen Marie Westfall
Hildur Magnúsdóttir
Snæbjörn Pálsson
Erla Björk Örnólfsdóttir
Zophonías O Jónsson
Author Affiliation
Faculty of Life and Environmental Sciences University of Iceland Reykjavik Iceland.
Source
Ecol Evol. 2021 Mar; 11(6):2616-2629
Date
Mar-2021
Language
English
Publication Type
Journal Article
Abstract
Buccinum undatum is a subtidal gastropod that exhibits clear spatial variation in several phenotypic shell traits (color, shape, and thickness) across its North Atlantic distribution. Studies of spatial phenotypic variation exist for the species; however, population genetic studies have thus far relied on a limited set of mitochondrial and microsatellite markers. Here, we greatly expand on previous work by characterizing population genetic structure in B. undatum across the North Atlantic from SNP variation obtained by RAD sequencing. There was a high degree of genetic differentiation between Canadian and European populations (Iceland, Faroe Islands, and England) consistent with the divergence of populations in allopatry (FST > 0.57 for all pairwise comparisons). In addition, B. undatum populations within Iceland, the Faroe Islands, and England are typified by weak but significant genetic structuring following an isolation-by-distance model. Finally, we established a significant correlation between genetic structuring in Iceland and two phenotypic traits: shell shape and color frequency. The works detailed here enhance our understanding of genetic structuring in B. undatum and establish the species as an intriguing model for future genome-wide association studies.
PubMed ID
33767824 View in PubMed
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