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==Introduction==


Myiasis is the parasitism of living animals by dipteran larvae. Myiasis can be obligatory or facultative (optional) and is described as cutaneous, nasal or somatic.


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'''[[Oestridae|''Oestridae'']]
#REDIRECT[[:Category:Myiasis Producing Flies]]
 
'''[[Dermatobia hominis|''Dermatobia hominis'']]
 
'''[[Calliphoridae|''Calliphoridae'']]
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===Screw Worm Myiasis===
[[Image:Screw Worm.jpg|right|thumb|150px|Screw worm larvae - John Kucharski - Wikimedia Commons]]
*''C. bezziana'' cause myiasis in both animals and humans
 
*Located mainly in tropical regions
 
*Larvae are '''obligate''' parasites
 
 
'''Recognition'''
*Similar to ''Calliphora spp.''
**Iridescent
**Clear wings
**Blue abdomen
 
*Longitudinal stripes on thorax
 
*Larvae have bands of spines
**Look like screws
 
 
'''Life cycle'''
*Eggs laid in wounds or body cavities
 
*Larvae feed as colonies
 
*Larvae drop to the ground to pupate
 
 
'''Pathogenesis'''
 
*Spiracles are exposed as larvae feed which expands the wound
**Creates a foul smelling lesion
 
*Cause irritation and pyrexia
 
 
'''Control'''
*In the USA
**Mass eradication through the release of sterile males
**Currently only persists where flies have migrated across the Mexican border
 
*In Africa
**Introduced into Libya through the importation of infested livestock
**Sterile males released
**Eradication occurred in 1991
 
 
====Maggot Debridement Therapy====
[[Image:Maggot Therapy.jpg|thumb|right|150px|Maggot therapy on a wound - Wikimedia Commons]]
*Human medicine
**Sterile ''Lucilia sericata'' maggots used to treat infected and necrotic wounds
**Larvae secrete proteolytic enzymes and antimicrobial agents into the wound
**Larvae do not burrow under the skin or attack healthy tissue
 
*Veterinary medicine
**Published reports rare
**Recently used successfully to treat a suppurative wound in a donkey that did not respond to conventional medical methods and surgery
 
 
===''Wohlfahrtia spp.''===
 
*'''Obligatory''' parasite
 
*Occurs in North America
 
*Parasite of mink and sometimes humans
 
 
'''Recognition'''
*Large 8-14mm long
 
*Pale grey
 
*Black stripes on thorax
 
*Black spots on abdomen
 
 
'''Life cycle'''
*Larvae deposited directly onto host
 
*No egg stage
 
*Larvae moult twice on host then fall to ground to pupate
 
 
'''Pathogenesis'''
*Larvae penetrate intact skin
**Cause boil like swellings
 
==[[Insecta Flashcards - WikiBugs#Myiasis Producing Flies|Myiasis Producing Flies Flashcards]]==
 
==Links==
 
*[[Viruses]]
 
*[[Ectoparasiticides]]
 
*[http://www.strikewise.com/index.html| Blowfly strike]
[[Category:Parasites]][[Category:Flies]][[Category:Myiasis_Producing_Flies]]
[[Category:Parasites]][[Category:Flies]][[Category:Myiasis_Producing_Flies]]

Latest revision as of 13:14, 5 April 2010