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Even short-distance dispersal over a barrier can affect genetic differentiation in Gyraulus, an island freshwater snail

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00127369" target="_blank" >RIV/00216224:14310/22:00127369 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1111/fwb.13990" target="_blank" >https://doi.org/10.1111/fwb.13990</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1111/fwb.13990" target="_blank" >10.1111/fwb.13990</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Even short-distance dispersal over a barrier can affect genetic differentiation in Gyraulus, an island freshwater snail

  • Original language description

    Dispersal is a fundamental mechanism for maintaining biodiversity, and long-distance dispersal (LDD) has attracted the interest of many researchers owing to its unusual characteristics. Conventionally, LDD has been defined based on absolute and proportional distances; however, it has recently been redefined based on geographic and genetic limits. Based on this redefinition, short-distance dispersal can have the same characteristics as LDD, depending upon the dispersal dynamics of an organism. However, the effects of LDD at a local scale on the genetic structure and diversification of organisms are poorly understood, since many studies have focused on definitive LDD, such as oversea dispersal. We focused on the freshwater snail Gyraulus sp. on an oceanic island, Chichijima Island, attempting to clarify the dynamics and effects of LDD on its genetic structure. We conducted molecular phylogenetic analyses, including divergence-time estimation, using mitochondrial DNA and nuclear DNA markers to reveal the origin of the snail. In addition, we clarified the genetic structure, gene flow, and evolutionary history of snails on the island using mitochondrial DNA and genome-wide single-nucleotide polymorphisms. Finally, we followed a landscape ecology approach to identify barriers to dispersal. Our phylogenies suggested that the snail has a single origin. Based on our divergence-time estimation, colonisation was estimated to have occurred around the late Pliocene to early Pleistocene. Our population genetic analyses documented genetic differentiation even within this small oceanic island. Based on the divergence time estimation and approximate Bayesian computation using single-nucleotide polymorphisms, the differentiation was estimated to have begun around the late Pleistocene. Little gene flow occurred between the geographically structured snail genetic groups. Landscape analysis suggested that catchment boundaries were a major barrier to dispersal. Considering the geography of the island, these results suggested that low-frequency dispersal over barriers is an important factor in genetic differentiation within the island. Furthermore, dispersal over barrier may be considered LDD, even though the dispersal distance is only several kilometres. Genetic evidence also suggested that resistance to gene flow over the barrier, rather than distance, is more important in determining whether dispersal should be considered LDD. This suggests that a definition of LDD that depends only on the distance may mislead an understanding of dispersal mode.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10618 - Ecology

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Freshwater Biology

  • ISSN

    0046-5070

  • e-ISSN

    1365-2427

  • Volume of the periodical

    67

  • Issue of the periodical within the volume

    11

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    13

  • Pages from-to

    1971-1983

  • UT code for WoS article

    000854763400001

  • EID of the result in the Scopus database

    2-s2.0-85138182494