Difference between revisions of "Myiasis"
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(Created page with '*Infection by dipterous flies in moist body areas (''eg.'' perineum) *Commonly affects sheep - ovine fleece rot *Grossl…') |
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Revision as of 10:25, 30 June 2010
- Infection by dipterous flies in moist body areas (eg. perineum)
- Commonly affects sheep - ovine fleece rot
- Grossly:
- Matted hair or wool, may be in wounds
- Multiple holes or ulcers
- Malodour
- May result in death due to septicaemia or toxaemia
- Cuterebra myiasis
- Caused by Cuterebra sp
- Young animals come into contact with eggs on stones or plants
- Nodules with larvae in subcutis + respiration openings to surface
- Hypoderma myiasis
- Caused by Hypoderma lineatum or H. bovis
- Mainly affects cattle
- Skin of legs is penetrated -> migration through oesophagus or vertebral canal to subcutis of back
- Cause subcutaneous nodules with respiration openings
- Larvae in cavity with fibrin and eosinophils surrounded by granulation tissue with eosinophil clusters
- Screwworm myiasis
- Occurs in Africa, Asia, Central and South America
- Larvaae are deposited in wounds
- Penetrate and liquify tissue