Difference between revisions of "Myiasis Producing Flies"

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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'']]
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#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