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

Abstract

The reconstruction of spatial genetic structure can provide valuable insights into the evolutionary processes affecting speciessuch as genetic drift, adaptive selection, and gene flow between populations (Crawford & Oleksiak, 2016; Funk et al., 2012; Kohn et al., 2006)-while facilitating the characterization of historical demographic events and ongoing evolutionary trajectories (Emerson et al., 2010). Marine invertebrate phylogeography in the north Atlantic Ocean has been shaped by climate variation during the Pleistocene Epoch; glacial cycles have repeatedly altered species' distributions over the last two million years. Several marine invertebrate species have gone extinct in North America and have subsequently been recolonized from Europe (Ingolfsson, 1992;

Divergence With Gene Flow and Contrasting Population Size Blur the Species Boundary in Cycas Sect. Asiorientales, as Inferred From Morphology and RAD-Seq Data

“…However, this approach is inadequate without considering the distribution and range size to distinguish allopatric from non-allopatric speciation ( Hernandez-Hernandez et al, 2021 ). Further, next-generation sequencing (NGS) techniques such as restriction site-associated DNA (RAD) improve the inferences of speciation processes ( Maguilla et al, 2017 ; Nikolic et al, 2020 ; Goodall et al, 2021 ). Estimating allopatric-to-non-allopatric speciation frequencies is important to learn the community assembly process and evolutionary and ecological mechanisms of biodiversity ( Skeels and Cardillo, 2019 ; García-Navas et al, 2020 ).…”

The effect of environmental factors on shell growth and repair in Buccinum undatum

“…The growth and repair of shells of marine gastropods can vary greatly both within and between species (Palmer, 1990). This variability is not only a result of phenotypic differences, such as shell thickness and shape (Brookes and Rochette, 2007;Magnúsdóttir et al, 2018), but also as a response to individual genotype (Magnúsdóttir et al, 2019;Goodall et al, 2021) and environmental cues such as predator presence and seawater temperature changes (Zdelar et al, 2018). It is important to understand how a combination of these factors impact the populations of B. undatum, particularly given their current commercial importance, and interest in fishery management strategies.…”