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69 Cards in this Set
- Front
- Back
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Nematodirus egg |
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Trichostrongylid egg |
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Trichuris (whipworm) |
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Name all three egg genera |
far left - trichostrongylid middle (largest) - nematodirus right (lower) - trichuris |
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Trichuris |
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Cooperia (1 cm long as adult) |
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In cattle |
Haemonchus placei (Barber's pole) |
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Ostertagia Ostertagi (emerging from gland) |
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Osteragia osteragia (male's tail) |
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trichostrongyloidea egg |
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Ostertagia Ostertagi (male) |
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Nematodirus egg (150-200 um long, 75-100 um wide) |
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in sheep |
Trichuris ovis (70-80 um long, 30-40 um wide) |
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Haemonchus contortus |
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Ostertagia ostertagi (developing L4 in gland) |
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Haemonchus contortus (adult is 2-3 cm long) |
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Strongyle egg |
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Haemonchus contortus in abomasum (largest abomasum nematode) |
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Trichinella Spiralis (adult is 3 mm long) |
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Trichuris suis (whipworm) adults are 4-6 cm long |
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Trichinella psuedospiralis (uncapsulated species in muscle) |
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Capsulated Trichinella species (spiralis, nativa, T6) In muscle |
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in a pig |
Trichuris suis |
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In a pig |
Oesophagostomum |
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In pig |
Trichuris suis |
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Oesophagostomum |
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Trichinella spiralis encapsulated in nurse cells (converted muscle cells) |
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pig intestine |
Trichuris suis (heads embedded in mucosa) |
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Ascaris suum (unlarvated egg) |
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from pig |
Ascaris suum |
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Trichinella spiralis (in epithelial cell) |
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Ascaris Suum (larvated egg) |
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in foal |
Parascaris equorum (mostly in duodenum and proximal jejunum) |
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in foal |
Stongyloides westeri (adults under 1 cm long) |
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Cyathastomins (small strongyle) |
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in foal |
Parascaris equorum (up to 40 cm long - disgusting) |
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Ascaris suum (develop to L3, infective stage, in the egg) |
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in foal |
Strongyloides westeri (can see little larva inside) |
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On horse pasture |
cyathastomins |
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Parascaris equorum |
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Cyathastomins (adults are red) |
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Strongylus vulgaris (1.5 - 2.5 cm) |
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Oxyuris equi (male is 1 cm long, female is 10 cm long) |
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cranial mesenteric artery |
Strongylus vulgaris (larvae) |
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in horse feces |
Cyathastomins (egg count low in acute cyathastominosis) |
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Fasciola hepatica (2.5 - 3.5 cm long and 1 cm wide) |
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what is making this liver unhappy |
Ascaris suum (milk spots in pig livers) |
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what is making this sheep liver unhappy |
Fasciola hepatica (acute fasciolosis, acute occurs in sheep only) |
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In horse |
Cyathastomins (encysted larvae that can reactivate simultaneously) |
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Miracidium (hatches from Faschiola spp. egg in environment and infects lymnea (or galba) snails) |
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Fascioloides magna (adult up to 8 cm long - yuck) |
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Dicrocoelium dendriticum (adult is < 1 cm long) |
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this egg is 160 um by 95 up |
Fascioloides magna (larger egg than Fasciola hepatica but otherwise similar) |
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Oxyuris equi (hang out in large intestine) |
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Fasciola hepatica (chronic fasciolosis) |
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what is making this cow liver unhappy |
Fascioloides magna (cattle are dead end hosts and flukes become encapsulated in cysts - ouch) |
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Oxyuris equi (laid in skin of perianal region) |
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Metacercaria of Fasciola spp. (found on vegetation and eaten by definitive host) |
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Cercaria of Fasciola spp. (develop into metacercaria in the environment) |
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Oxyuris equi (horse rubs off skin flakes with eggs into environment) |
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what is making this horse intestine unhappy |
Strongylus vulgaris larvae (infarction due to larval damage to the cranial mesenteric artery) |
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Paraphistomum (hangs out in the rumen and reticulum or ruminants worldwide) |
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what is making this ant want to climb up and be eaten (how mean) |
Dicrocoelium dendriticum (brown ants are intermediate host, land snails are other intermediate host) |
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this egg is 130-150 um by 63-90 um |
Fasciola hepatica (arrow is pointing to the operculum) |
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Dicrocoelium dendriticum (requires a zinc sulphate flotation) |
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Two different species |
a) Paramphistomum (look like Fasciola but clearer) b) Fasciola |
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What is making this sheep liver unhappy |
Fasciola hepatica (sheep are aberrant hosts and usually die within a few months of infection - poor sheepy) |
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three species of abomasal nematodes based on size |
left - Haemonchus middle - Ostertagia right - trichostrongylus |
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what is making this abomasum unhappy |
Ostertagia ostertagi (hyperplasia of the abomasal mucosa) |