• Login
    View Item 
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Biological Sciences
    • View Item
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Biological Sciences
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Scholarworks@UACommunitiesPublication DateAuthorsTitlesSubjectsTypeThis CollectionPublication DateAuthorsTitlesSubjectsType

    My Account

    Login

    First Time Submitters, Register Here

    Register

    Statistics

    Display statistics

    A morphological and genetic review of the Pardosa groenlandica species complex (Araneae: Lycosidae)

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Slowik.Jozef.2011.pdf
    Size:
    12.67Mb
    Format:
    PDF
    Download
    Author
    Slowik, Jozef
    Chair
    Sikes, Derek
    Winker, Kevin
    Committee
    Cushing, Paula
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/4964
    Abstract
    The Pardosa groenlandica species complex comprises seven recognized species, P. groenlandica (Thorell 1872), P. dromaea (Thorell 1877), P. tristis (Thorell 1877), P. prosaica Chamberlin and Ivie 1947, P. bucklei Kronestedt 1975, P. albomaculata Emerton 1885, and P. lowriei Kronestedt 1975. These species have overlapping distributions, creating sympatric occurrences with at least one other member of the complex. They can be found in Greenland, throughout Canada, and occur in the United States from the Rocky Mountains to the Pacific coast, through Alaska, and as far as eastern Siberia. These species' genitalia, which bear the primary diagnostic characters, are very similar and show large amounts of within-species and within-population variation. Because of this, they have seen various levels of taxonomic splitting and lumping from one species to the presently recognized seven. I evaluated the utility of the existing morphological diagnostic characters which, if geography is ignored, successfully diagnose only four species (P. albomaculata, P. lowriei, and P. bucklei, with the remaining species synonymized under P. groenlandica). Additionally, I sequenced five genes, two mitochondria) (COI & NDI), and three nuclear genes (ITS 1, 5.8S, and ITS2) of 144 specimens, to help clarify the taxonomy of the species complex. All seven species showed some level of polyphyly or paraphyly in their gene trees. A population genetics analysis of P. groenlandica and P. tristis from Colorado populations failed to find molecular divergence between the populations, raising questions about P. groenlandica occurring in Colorado, and/or the validity of P. tristis. These results question the value of using this genetic dataset to test species delineated using traditional taxonomic methods in the groenlandica species complex of the genus Pardosa. Reconciliation is likely only when genetic markers are studied that match the timing and rate of the observed phenotypic changes.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2011
    Table of Contents
    1. The designation and morphological review of the Pardosa groenlandica species complex -- 2. Phylogenetic systematics of the Pardosa groenlandica species complex -- 3. Population genetics of Pardosa groenlandica and Pardosa tristis in Colorado -- Literature cited -- Appendices.
    Date
    2011-08
    Type
    Thesis
    Collections
    Biological Sciences

    entitlement

     
    ABOUT US|HELP|BROWSE|ADVANCED SEARCH

    The University of Alaska is an affirmative action/equal opportunity employer, educational institution and provider and prohibits illegal discrimination against any individual.

    Learn more about UA’s notice of nondiscrimination.

    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.