Changes

Angiostrongylus vasorum (view source)

Revision as of 19:24, 19 July 2010

14 bytes added , 19:24, 19 July 2010

no edit summary

Line 36: Line 36:

'''Intermediate host''': Mainly snails and slugs.

−

*Infects dogs and foxes.

+

==Identification==

−

*A typical metastrongyloid, ~~with the adult worms living~~ in ~~the pulmonary arteries and the right side of the heart~~.

+

The adults are slender, and measure around 2cm in length. The males have a small bursa.

−

==== Life-Cycle ====

+

==Life Cycle==

−

~~Adults (approximately 2cm)~~, ~~produce anticoagulants to reduce thrombus formation leading to coagulation disorders:~~

+

The adults are ovo-viviparous. The adults lay eggs in the pulmonary arteries. The eggs then hatch in the capillaries. The first stage larvae migrate into the alveoli and then the trachea. They are swallowed, enter the intestinal system and are then past in the faeces. The intermediate host then become infected, which later infect the definitive host.

−

~~→ eggs laid~~ into ~~pulmonary arteries~~

+

The larvae the develop into the definitive host, and migrate via the mesenteric lymph nodes, and the blood where they affect the heart, primarily the right ventricle.

−

~~→ trapped in lung capillaries~~

−

~~→ larvae (with merastrongyloid kinky tail) hatch out~~

−

~~→ alveoli (causing a small injury)~~

−

~~→ trachea~~

−

~~→ swallowed~~

−

~~→ passed in faeces~~

−

~~→ slug (intermediate~~ host)

−

~~→ eaten by dog or fox (final hosts)~~

−

~~→ larvae~~ migrate via mesenteric lymph nodes

−

→ blood ~~stream~~

−

→ heart.

==== Epidemiology ====

Cmcory

1,377

edits