NCVP - National Center for Veterinary Parasitology

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  • Home
  • Resources
    • People >
      • Directors and Advisory Board
      • Residents >
        • Boehringer Ingelheim Resident
        • Elanco Resident
        • IDEXX Resident
        • Merck Resident
        • Zoetis Resident
      • NCVP Alums
      • Clinical Parasitology Support
      • Additional Support
      • Sponsors
    • Parasite Image Database >
      • Protozoa
      • Arthropods
      • Nematodes
      • Trematodes
      • Cestodes
      • Acanthocephala
      • Tick-Borne Disease Agents
    • Case of the Month
    • Teaching and Research Materials >
      • Teaching Specimen Request
      • Parasite Jeopardy Games
      • Parasite Videos
    • Online Resources >
      • Parasitology Board Preparation
      • Additional Parasitology Resources
      • Resources for Educators
    • NCVP Board Member Resources
    • NCVP Zoom Backgrounds
    • Residents' Corner
  • News
    • Veterinary Parasitology in the News
    • NCVP Newsletter
  • Opportunities
    • Request for Proposals
    • Residency Application
    • Continuing Education in Parasitology
    • Positions Open in Veterinary Parasitology

Parasite Image Database

Entamoeba spp.

 
Picture
Cyst of Entamoeba coli stained with iodine from an infected olive baboon, Papio anubis. Mature cysts can have up to 8 nuclei.
Picture
Entamoeba histolytica / dispar cysts stained with iodine from an infected olive baboon, Papio anubis. The cysts of Entamoeba histolytica and Entamoeba ​dispar are considered morphologically indistinguishable. Mature cysts are spherical, have 4 nucleii, and measure 12 to 18 µm in diameter.
Picture
Entamoeba invadens trophozoite from tissue of a tortoise. An important pathogen of captive reptiles, Entamoeba invadens  is the causative agent of amoebiasis in reptiles. Trophozoites measure 10-38 μm by 9-30 μm and contain one to four nuclei.
Picture
Lesion of Entamoeba invadens in the stomach of a tortoise. Lesions typically occur in the intestinal tract and liver,  creating ulcers characterized by hyperemia, inflammation, and an infiltration of neutrophils. Amebae are found at the periphery of the ulcer, leaving the cavity filled with necrotic tissue

    Categories

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    Amebas
    Arthropods
    Bugs
    Cimex Lectularius
    Crustaceans
    Entamoeba Spp.
    Flagellates
    Giardia
    Histomanas Meleagridis
    Pentasomes
    Pentasomid
    Protozoa


    Veterinary Parasitology Restricted Glossary
    File Size: 111 kb
    File Type: pdf
    Download File

    Authors: Drs. Sidney A. Ewing, J. Carl Fox, Eileen M. Johnson, Helen E. Jordan, and A. Alan Kocan

    J. Carl Fox, Ph.D., (retired), a Professor at Oklahoma State University's Center for Veterinary Health Sciences, originally compiled this online image database to aid those engaged in teaching and learning veterinary parasitology. Images were also contributed by Helen E. Jordan, DVM, Ph.D., (retired), Sidney A. Ewing, DVM, Ph.D., (retired), and A. Alan Kocan, Ph.D., (deceased).

    New, updated images have largely been provided by Eileen Johnson, DVM, Ph. D., clinical parasitologist at Oklahoma State University who retired in 2015, and credit for the beauty of the images on this site goes to her. Tick photos were captured by Steph Heise, DVM, Ph. D., while she was a graduate student at OSU, and Becky Duncan-Decoq, MS also has contributed a number of images using the OSU specimen collection. Also, Dr. Ellis Greiner, Professor Emeritus, University of Florida, Department of Infectious Diseases and Pathology, has graciously shared with the NCVP parasite photographs he has taken and compiled over the years, which are indicated by both an NCVP and a University of Florida (UF) watermark.

    The parasite image database is highly accessed and has been used by parasitologists and students all over the world. Here we provide an updated site to continue to support veterinary parasitology instruction. The images are available to anyone for educational use in lectures, presentations, or discussions of parasites and parasitic diseases. However, they should not be published or used for commercial purposes. Some images may appear distorted when opened on some devices. If you need an image for publication, please contact us with a specific request through www.ncvetp.org.

    Please feel free to email us with any suggestions or requests. 

    Enjoy!

    Drs. Mason Reichard, Kelly Allen, and Susan Little
    National Center for Veterinary Parasitology
    Oklahoma State University