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Psoroptic Mange (view source)

Revision as of 16:33, 1 March 2011

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== Introduction  ==
 
== Introduction  ==
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Psoropitc mange is the disease caused by the '''non-burrowing''' mite, ''Psoroptes ovis ''(common name Scab mite), which affects sheep.  
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Psoropitc mange is the disease caused by the '''non-burrowing''' mite, ''[[Psoroptes ovis]] ''(common name Scab mite), which affects sheep.  
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Other species of Psoroptes mite affect a variety of species including Cattle, Goats, Horse, Rabbit, Camelid, however, all mites are host specific and will be discussed later.  
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Other species of Psoroptes mite affect a variety of species including Cattle, Goats, Horse, Rabbit, Camelid, however, all mites are host specific.  
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'''Description''': The mite looks very similar in appearance to Chorioptes, being oval in shape with long legs, but is almost visible to the naked eye. It has pointed mouthparts and jointed pedicles which have suckers on the distal aspect.
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'''Life cycle''': Egg- Larvae- Nymph- Adult is confined to the skin surface. This life cycle takes around 10 days to complete. Adult female life expectancy is around one month and she lays 2-3 eggs per day, hence a mite population on an animal can expand rapidly. The mite can survive off the host and so transmission via housing and bedding is possible. Most transmission occurs from '''direct contact '''such as at markets or in livestock transporters.
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'''Predilection site''': Lesions are most common on flanks, neck, back and shoulders
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This mite is found worldwide, but has been '''eradicated from Australia and New Zealand'''.
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== Pathogenesis  ==
 
== Pathogenesis  ==
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