Parasitology Lab: Nematodes 1-40

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    Toxocara canis 

    Dog
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    Toxocara cati 

    Cat
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    Toxascaris leonina 

    Cat and dog
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    Ascarid Roundworm

    "Arrowhead"

    Larval wings of the cuticle
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    Divison of the Zygote of a Toxocara egg 

    Cell on left, morula on right
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    Larvae of Toxocara

    Vermiform embryo
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    Verifrom embryo

    Toxascaris leonina

    Cat and dog
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    Toxocara canis

    Dog
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    • Right: Toxocara canis
    • Left: Toxascaris leonina

    Dog
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    Massive Ascariasis in young dog, will often lead to intussusceptions (telescoping of the intestines)
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    Toxocara cati 

    Cat

    Isospora felis (smaller circles)
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    Egg of Toxocara cati

    Oocyst of Isospora felis

    Cat
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    Eggs of Toxocara cati (dark middle) and Ancylostoma tubaeformae

    Cat
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    Parascaris equorum

    Ascarid of Horse
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    Parascaris equorum 

    Horse

    Strongyloid eggs also on slide
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    Parascaris equorum larvae 

    Horse
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    Ascaris lumbricoides 

    Human
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    Ascaris suum or Ascaris lumbricoides 

    Swine or Human
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    Ancylostoma sp.
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    Uncinaria stenochephala

    Cat and dog
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    Ancylostoma tubaeformae

    Cat
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    Eggs of Ancylostoma caninum 

    Dog
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    • Uncinara stenocephala ( larger eggs)
    • Ancylostoma caninum (smaller eggs)
    • Upper right hand corner Toxocara canis

    Dog
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    • Eggs of Uncinaria stenocephala (larger eggs)
    • Ancylostoma caninum (smaller eggs)

    Dog
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    • Hookworm anemia: pale mucus membranes, weakness, death
    • Ancylostoma is the cause
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    Hookworm infection in puppy, bloody feces characterized by dark tarry chocolate brown stools caused by Ancylostoma
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    Eggs of Toxocara canis and Toxascaris leonina, both can be found in dogs, foxes, and coyotes.

    Small eggs are Ancylostoma caninum
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    Toxocara cati and Ancylostoma tubaeformae

    Cat
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    Eggs of Ancylostoma caninum 

    Dog
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    First stage larvae of hookworms can hatch within 48 hours
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    Larvae of hookworms being desiccated by solution
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    Trichuris spp. (whip-like)
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    Trichuris vulpis

    Whipworm of dogs

    Has bipolar plugs AKA double operculated
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    Trichuris campanula 

    Whipworm of cats
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    Trichuris sp
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    Trichuris vulpis and Alaria canis (stomach fluke)

    Dog
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    Trichuris vulpis and Ancylostoma caninum

    Dog
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    Trichuris vulpis on mucosa of the colon 

    Dog
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    Trichuris vulpis (whipworm)

    Dog
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    Trichuris vulpis

    Dog
Author
Kristenwilliams
ID
219497
Card Set
Parasitology Lab: Nematodes 1-40
Description
Nematodes
Updated