Mites

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Mites
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(No Transcript)
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Differentiation of ticks and mites ticks
mites
Large, macroscopic Small, microscopic
Body with short or no hair Body with long hair
Hypostome exposed and armed with teeth Hypostome hidden, unarmed (no teeth)
All parasitic Some are parasites of plants and animals
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Mites and diseases

• I. Direct harm
• Itch mite Sarcoptes scabiei var. hominis
• Follicle mite
• Demodex folliculor ?????
• D. brevis ?????
• Dust mite contain allergens causing asthmatic
  symptoms

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House Dust Mite - Dermatophagoides sp.

• House dust mites live in our homes and feed on
  the microbes that grow on cast skin flakes, hair,
  and other detritus. The average pillow is reputed
  to be home to 10,000 dust mites, house dust mites
  are the most important source of allergens in
  house dust. Severe allergies, rhinitis, eczema
  (skin inflammation), and asthma (respiratory
  disorder) are induced by the allergens these
  mites produce and affect 50-100 million people
  worldwide.

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House Dust Mite - Dermatophagoides sp.
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Control of dust mite

• Like most of the tiny organisms that share our
  homes, dust mites are less troubling if their
  population levels remain low. Reducing the
  humidity in the home (e.g. increased ventilation,
  air conditioning) and removing upholstered
  furniture, carpets and other household items that
  accumulate skin flakes and retain humidity are
  good first steps in the control of dust mite
  populations.

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Transmission of disease

• 1. Jungle encephalitis (virus)
• 2. Epidemic hemorrhagic fever (virus)
• 3. Q fever (rickettsia)
• 4. Endemic typhus
• 5. Scrub typhus (rickettsia)

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Bulbous Carmine Mite
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Boxmite
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Cepheidae, nymph
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Scrub itch mite or chigger
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Cosmochthonius
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Cosmochthonius sp.2
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House Dust Mite - Dermatophagoides sp.
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Evimirus
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Feather mite
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Jumping mite
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Mesostigmata
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Lamington Red Velvet Mite
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Walter's redlegged mite
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Phoretic Uropodid Deutonymphs
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Nesopelops nymph
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Polyaspis
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Mesostigmata, Promegistidae
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Schizotetranychus sp., female (left) and male
(right)
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Nanorchestid mites
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Terpnacarus
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Peacock mites
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Turtle Mite
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Whitefly with phoretic broad mites
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Martian Wink

• This structure, is the genital opening of a
  terrestrial parasitengone mite and the three oval
  structures are the genital papillae.

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Male Australian Paralysis Tick