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Thelazia lacrymalis (view source)

Revision as of 19:22, 20 July 2010

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==~~== General ==~~==

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==Hosts==

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*Eye worm, ''T. ~~lacrymalis~~''.

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'''Intermediate hosts''': Muscid flies.

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*Spiruroid nematode (1-2cm ~~long)~~.

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*Conjunctival sac, ~~inner aspect~~ of ~~third eyelid~~.

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'''Definitive hosts''': Horses.

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*Quite common (up to 30% UK horses).

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*Non-~~pathogenic~~.

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==Identification==

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The adults are small, at only 1-2cm in length, and are a pale yellow colour.

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==Life Cycle==

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The female worms are viviparous. L1 is passed by the female worm, and is ingested by the fly, acting as the intermediate host. The L1 develop into L2, then into L3 inside the ovarian follicles of the fly. The fly infects the definitive host, whilst feeding.

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The prepatent period of ''T. lacrymalis'' is 3-6 weeks.

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~~==== Life-Cycle ====~~

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*Indirect LC; nuisance flies, [[Musca spp.|''Musca'' species]].

[[Category:Spiruroidea]]

[[Category:Horse_Nematodes]]

[[Category:To_Do_-_Max]]

Cmcory

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