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Changes
Special:MobileDiff/41043
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Mites
(view source)
Revision as of 16:23, 2 November 2008
768 bytes added
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16:23, 2 November 2008
→''Trombicula''
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*Grey or black discolouration of feathers when large numbers of mites are present
*Grey or black discolouration of feathers when large numbers of mites are present
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===''Trombicula''===
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===''Trombicula
autumnalis
''===
*In [[Parasitic skin infections - Pathology#Trombiculidiasis|skin infestation]]
*In [[Parasitic skin infections - Pathology#Trombiculidiasis|skin infestation]]
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*Also called the 'harvest mite'
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*Not host-specific
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**Will parasitise any animal, including humans
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*Only the larval stage is parasitic
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**Nymphal and adult stages are free-living in the soil
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*Mite numbers are highest in late summer in temperate climates
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**Mite numbers are constant all year in tropical regions
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'''Recognition'''
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*Six legs
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*Bright orange in colour
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*Hairy
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*No spiracles
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**Breath through cuticle
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'''Pathogenesis'''
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*Larvae insert mouthparts into skin and inject cytolytic enzymes
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*Feed on partly digested host tissue
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*Causes irritation
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*Can cause a hypersensitivity reaction
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*Mites found on head, ears and flanks of pets
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*Mites found on face and limbs of grazing animals (depending upon host height)
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'''Control'''
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*Very difficult
===''Leporacarus''===
===''Leporacarus''===
Nabrown
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