Horses

Question 1

Answer 1

Fasciola hepatica

L, O - s, 2 thin shells with operculum, UE, yellow

trematode - sedimentation

Question 2

Answer 2

Dicrocoelium dendriticum

S, O, 2 thin shells with operculum, E - miracidium, dark brown

trematode - sedimentation

Question 3

Answer 3

Eimeria leuckarti

Oocyst, 70-85 um, O, 2 thin shells, micropyle, unspor., DB

protozoa - flotation - breza

Question 4

M, D – shape (polyedric), 3ts, E - oncosphere, pyriform apparatus, LB

Answer 4

Anoplocephala perfoliate - 20-25 cm
Anoplocephala magna - 80 cm
Paranoplocephala mamillana - 5 cm

Loc: Small intestine, P. perfoliate – ileocecal junction

cestode - flotation - breza

Question 5

Answer 5

Strongyloides westeri

S, O - s, 2 thin shells, embryonated - L1 , transparent

nematode - rhabditida - flotation - breza

Question 6

Answer 6

Strongylus spp.:

S. vulgaris, S. equinus, S. edentates

large strongyles

L, O - s, 2 thin shells, UE - few blastomers, grey

nematode - strongylida - flotation - breza

Question 7

Answer 7

Trichostrongylus axei

M, ovoid - s, 2 thin shells, UE - many blastomers, grey

nematode - strongylida - flotation - breza

Question 7

Answer 7

Cyathostomum spp, Cycliocyclus

small strongyles

M, ovoid, 2 shells, UE, grey

nematode - strongylida - flotation - breza

Question 8

Answer 8

Parascaris equorum

M, spherical, 3 thick shells, rough surface, UE, dark brown

nematode - ascaridia - flotation - breza

Question 9

Answer 9

oxyuris equi

M, ovoid - as, 2 thin shells, mucoid cap, UE, yellow-brown

nematode - oxyurida - flotation - breza

Question 10

Answer 10

Habronema muscae,
Habronema microstoma

S, elongated - s, 2 thin shells, E (L1), transparent

nematode - spirurida - flotation - breza

Question 11

Answer 11

Dictyocaulus arnfieldi

M, oval, 80-100 μm, 2 thin shells, E - L1 , light grey

nematode - strongylida - flotation or larvoscopy

Question 12

Not found in cooprological exam:

Answer 12

1. Thelazia lacrimalis
2. Setaria equine
3. Onchocera reticularis, O. cervicalis

nematodes - spirurida

Question 13

Protozoa

Answer 13

1. Eimeria leuckarti

Question 14

Trematoda

Answer 14

1. Fasciola hepatica
2. Dicrocoelium dentriticum

Question 15

Cestode

Answer 15

1. Anoplocephalla perfoliata, magna
2. Paranoplocephala mamillana

Question 16

Nematode

Answer 16

Rhabditida

1. Strongyloides westeri

Strongylida

1. Strongylus vulgaris, edentatus, equinus
2. Cyathostomum spp, Cyclicocyclus
3. Trichostrongylus axei
4. Dictyocaulus arnfieldi

Ascaridida

1. Parascaris equorum

Oxyurida

1. Oxyuris equi

Spirurida

1. Habronema muscae, microstoma
2. Thelazia lacrimalis (not fecal exam)
3. Setaria equine (not fecal exam)
4. Onchocera reticularis, cervicalis (not fecal exam)

Question 17

Ectoparasites

Answer 17

1. Stomoxys calcitrans – stable fly - Stinging fly
2. Tabanus bovis – horse fly - Females suck blood
3. Rhinoestrus purpureus – warble flies - Nasal cavity, larvae parasitic, pupa in soil
4. Gasterophilus intestinalis, G. pecorum – warble flies
5. Damalinia equi - Feed on skin, incomplete metamorphosis - Chewing lice
6. Haematopinus asini
7. Ixodes ricinus
8. Dermacentor spp.
9. Haemaphysalis spp.
10. Chorioptes equi