Difference between revisions of "Hydrotaea irritans"
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| Line 37: | Line 37: | ||
***E.g. 'Broken Head' | ***E.g. 'Broken Head' | ||
**Secondary bacterial infection may occur | **Secondary bacterial infection may occur | ||
| − | **[[ | + | **[[Blowfly Strike|Blowfly strike]] may follow |
| + | [[Category:Parasites]][[Category:Nuisance Flies]] | ||
Revision as of 21:07, 30 March 2010
- Also known as the 'head fly'
- Hydrotaea irritans the main species of veterinary importance
- Mainly a problem of sheep
- In some areas it is the most numerous fly of cattle and horses
Recognition
- Similar to Musca spp.
- Olive green abdomen
- 4-7mm in length
Life Cycle
- Eggs laid in decaying vegetation, faeces and in carrion (in the summer months)
- Emerging larvae overwinter (diapause) and pupate in spring
- Adult flies emerge in the summer
- One generation per year
Pathogenesis
- Cattle
- Evidence suggests that they transmit summer mastitis
- Sheep
- Cause extreme irritation
- Mouthparts rasp the skin to feed on secretions and exudate
- Leads to self-inflicted damage
- E.g. 'Broken Head'
- Secondary bacterial infection may occur
- Blowfly strike may follow
- Cause extreme irritation