KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Dissertations and Theses
    • Theses
    • View Item
    •   KU ScholarWorks
    • Dissertations and Theses
    • Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Lecanicephalidean (Cestoda) fauna of the giant freshwater whipray, Himantura polylepis (Myliobatiformes: Dasyatidae), from Malaysian and Indonesian Borneo.

    Thumbnail
    View/Open
    Guyer_ku_0099M_14796_DATA_1.pdf (22.88Mb)
    Issue Date
    2016-08-31
    Author
    Guyer, Rachel R.
    Publisher
    University of Kansas
    Format
    94 pages
    Type
    Thesis
    Degree Level
    M.A.
    Discipline
    Ecology & Evolutionary Biology
    Rights
    Copyright held by the author.
    Metadata
    Show full item record
    Abstract
    Eight species of dasyatid stingrays (Myliobatiformes) are characterized as freshwater obligate, including the giant freshwater whipray (Himantura polylepis), comprising at least three separate incursions into freshwater habitats. However, a tolerance of estuarine environments has been suggested for H. polylepis. Eight individuals of this species were collected between 2003 and 2009 at two sites in Borneo [six from the Kinabatangan River (Malaysia) and two from Tarakan (Indonesia)]; these host specimens were examined for lecanicephalidean cestodes. Collectively, these hosts were parasitized by eight species of lecanicephalidean tapeworms: three new species of Tetragonocephalum, three new species of Polypocephalus, and one species each of two as of yet undescribed genera. This brings the total number of reported cestodes from H. polylepis to 18 species in nine genera of four orders. Of the nine total genera parasitizing H. polylepis, one is unique while seven are collectively also found parasitizing marine and euryhaline dasyatid hosts. In contrast, the South American freshwater potamotrygonids are parasitized by a total of seven genera; three of these are unique to potamotrygonids while four genera also parasitize marine stingrays. The similarity of the cestode assemblage of the giant freshwater whipray to that of its marine and euryhaline relatives might be one of several lines of evidence to support the notion that this stingray may not be restricted to freshwater.
    URI
    http://hdl.handle.net/1808/22360
    Collections
    • Ecology & Evolutionary Biology Dissertations and Theses [349]
    • Theses [3906]

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    Login

    Statistics

    View Usage Statistics

    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps