Strongylus vulgaris (1)

Question 1

What are the hosts?

Answer 1

All equid species

Question 2

Describe an adult

Answer 2

1-2 cm long
Globular mouth capsule
2 dorsal ear shaped teeth

Question 3

Describe the life cycle

Answer 3

Migration through arteries - 6 months

Larvae

 - Migrate in arterial vessels of intestine
      - Cranial mesenteric, ileocolic arteries, and other arteries
 - Aberrant larvae migration

Adult
- Remove plug of mucosa

Question 4

Site of infection

Answer 4

Large intestine

Question 5

Describe the Pathogenesis

Answer 5

Adults

 - Bloodsuckers
 - Less pathogenic

Larvae

 - Arteritis
 - Thrombus
 - Death

Question 6

Describe the clinical signs

Answer 6

Colic

Arteritis in cranial mesenteric and ileocolic arteries

Marked thickening of arterial wall

Thrombus formation

Infarction - area of necrosis in a tissue as result of obstruction

Abdominal colic and thrombo-embolus

Anemia

Question 7

How do you diagnose?

Answer 7

Eggs - cannot differentiate eggs of large and small Strongyles

Larvae and Adults - can differentiate between large and small
Strongyles

Question 8

What is the common name?

Answer 8

Large Strongyles