Difference between revisions of "Thelazia lacrymalis"

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=== ''THELAZIA'' SPECIES ===
{{Taxobox
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==== General ====
|name              = Thelazia lacrymalis
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*Eye worm, ''T. lacrymalis''.
|kingdom            =
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*Spiruroid nematode (1-2cm long).
|phylum            =
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*Conjunctival sac, inner aspect of third eyelid.
|class              = [[Nematodes|Nematoda]]
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*Quite common (up to 30% UK horses).
|sub-class          =  
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*Non-pathogenic.
|order              =  
 
|super-family      = [[Spiruroidea]]
 
|family            =
 
|sub-family        =
 
|genus              =
 
|species            =
 
}}
 
Also known as: '''''Equine eye worm
 
 
 
==Hosts==
 
'''Intermediate hosts''': [[Musca spp.|Muscid flies]]
 
 
 
'''Definitive hosts''': Horses
 
 
 
==Identification==
 
''T. lacrymalis'' is a [[Nematodes|nematode]] of the superfamily [[Spiruroidea]]. The adults are small, at only 1-2cm in length, and are a pale yellow colour.
 
 
 
==Life Cycle==
 
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.
 
 
 
The prepatent period of ''T. lacrymalis'' is 3-6 weeks.
 
 
 
{{Learning
 
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=%22Thelazia+lacrymalis%22&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&x=53&y=12&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all ''Thelazia lacrymalis'' publications]
 
}}
 
 
 
 
 
{{review}}
 
 
 
{{OpenPages}}
 
  
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==== Life-Cycle ====
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*Indirect LC; nuisance flies, [[Musca spp.|''Musca'' species]].
 
[[Category:Spiruroidea]]
 
[[Category:Spiruroidea]]
 
[[Category:Horse_Nematodes]]
 
[[Category:Horse_Nematodes]]
 
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[[Category:To_Do_-_Parasites]]
[[Category:Expert_Review]]
 

Revision as of 22:10, 25 June 2010

THELAZIA SPECIES

General

  • Eye worm, T. lacrymalis.
  • Spiruroid nematode (1-2cm long).
  • Conjunctival sac, inner aspect of third eyelid.
  • Quite common (up to 30% UK horses).
  • Non-pathogenic.

Life-Cycle