• Admin Login
    View Item 
    •   Home
    • Faculty of Science and Engineering
    • Faculty of Science and Engineering
    • View Item
    •   Home
    • Faculty of Science and Engineering
    • Faculty of Science and Engineering
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WIRECommunitiesTitleAuthorsIssue DateSubmit DateSubjectsTypesJournalDepartmentPublisherThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsTypesJournalDepartmentPublisher

    Administrators

    Admin Login

    Local Links

    AboutThe University LibraryOpen Access Publications PolicyDeposit LicenceCOREWIRE Copyright and Reuse Information

    Statistics

    Display statistics

    Phenotypic variation in Xenopus laevis tadpoles from contrasting climatic regimes is the result of adaptation and plasticity

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Kruger_Phenotypic_variation_20 ...
    Embargo:
    2023-08-22
    Size:
    750.6Kb
    Format:
    PDF
    Download
    Authors
    Kruger, Natasha cc
    Secondi, Jean
    du Preez, Louis
    Herrel, Anthony
    Measey, John
    Issue Date
    2022-08-22
    
    Metadata
    Show full item record
    Abstract
    Phenotypic variations between populations often correlate with climatic variables. Determining the presence of phenotypic plasticity and local adaptation of a species to different environments over a large spatial scale can provide insight on the persistence of a species across its range. Amphibians, and in particular their larvae, are good models for studies of phenotypic variation as they are especially sensitive to their immediate environment. Few studies have attempted to determine the mechanisms that drive phenotypic variation between populations of a single amphibian species over a large spatial scale especially across contrasting climatic regimes. The African clawed frog, Xenopus laevis, occurs in two regions with contrasting rainfall regimes in southern Africa. We hypothesised that the phenotypic variation of life-history traits of X. laevis tadpoles emerges from a combination of plastic and genetic responses. We predicted that plasticity would allow the development of tadpoles from both regions in each environment. We also predicted that local adaptation of larval traits would drive the differentiation of reaction norms between populations and lower survival in tadpoles reared away from their home environment. We measured growth, time to metamorphosis, and survival in a reciprocal transplant experiment using outdoor mesocosms. Supporting our prediction, we found that the measured variation of all traits was explained by both adaptation and plasticity. However, the reaction norms differed between populations suggesting adaptive and asymmetric plasticity. All tadpoles experienced lower survival when translocated, but only translocated tadpoles from the winter rainfall region matched survival of local tadpoles. This has implications for the dynamics of translocated X. laevis into novel environments, especially from the winter rainfall region. Our discovery of their asymmetric capacity to overcome novel environmental conditions by phenotypic plasticity alone provides insight into their invasion success.
    Citation
    Kruger, N., Secondi, J., du Preez, L. et al. Phenotypic variation in Xenopus laevis tadpoles from contrasting climatic regimes is the result of adaptation and plasticity. Oecologia (2022). https://doi.org/10.1007/s00442-022-05240-6
    Publisher
    Springer
    Journal
    Oecologia
    URI
    http://hdl.handle.net/2436/624905
    DOI
    10.1007/s00442-022-05240-6
    Additional Links
    https://link.springer.com/article/10.1007/s00442-022-05240-6
    Type
    Journal article
    Language
    en
    Description
    This is an accepted manuscript of an article published by Springer on 22/08/2022, available online: https://doi.org/10.1007/s00442-022-05240-6 The accepted version of the publication may differ from the final published version. For re-use please see the publisher's terms and conditions.
    ISSN
    0029-8549
    EISSN
    1432-1939
    Sponsors
    DSI-NRF Centre of Excellence for Invasion Biology; Ambassade de France en Afrique du Sud.
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00442-022-05240-6
    Scopus Count
    Collections
    Faculty of Science and Engineering

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.