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===Life cycle===
===Life cycle===
''Demodex'' species complete their entire life cycle within the hair follicles and sebaceous glands of a single host. Transmission between hosts occurs by close contact usually these will be commensals of the host from a young age due to maternal transfer to the neonate during suckling. Their life cycle takes 3 weeks to complete. <br/>
''Demodex'' species complete their <u>entire life cycle within the hair follicles and sebaceous glands of a single host</u>. Their life cycle takes 3 weeks to complete. The female lays 20-24 '''eggs''' at a time into hair follicles. '''Larvae''' are hexapod and have 3 larval stages before becoming adult.
'''Eggs'''
Transmission between hosts occurs by close contact. Usually these mites will be commensals of the host from a young age due to maternal transfer to the neonate during suckling.
'''Larvae'''
===Important Species===
===Important Species===
''Demodex canis''
::This is by far the most commonly seen species of ''Demodex'' causing clinical problems. Its host species is the dog and demodicosis is usually a secondary opportunistic pathogen due to other underlying conditions.
::This is by far the most commonly seen species of ''Demodex'' causing clinical problems. Its host species is the dog and demodicosis is usually a secondary opportunistic pathogen due to other underlying conditions.
''Demodex criceti'' & ''Demodex aurati''
::Cause hair loss in Hamsters.
::Cause hair loss in Hamsters.
''Demodex bovis''
::Causes pea shaped nodules in cattle.
::Causes pea shaped nodules in cattle.