ecto-parasites &arachnids

  1. main points of mite cheyletiella yasguri?
    • Scientific name-Cheyletiella yasguri
    • -affects dogs cats and rabbits
    • -nickname walking dandruff
    • -occurs anywhere on body
    • -surface feeders
    • -large papal claws
    • -live in keratin on the skin, feed on tissue fluids
    • -highly contagious
  2. what are the clinical signs of cheyletiella yasguri?
    • alopecia
    • pruritis
    • self trauma
  3. how do you dx cheyletiella yasguri?
    • top 3
    • exam with magnifying loupe
    • biopsy may be needs and
    • occasionally seen in fecal flotation
  4. life cycle of cheyletiella yasguri?
    • -Entire life spent on host
    • -adult mites live on skin surface and on hair
    • -eggs laid on skin mount to larvae, then nymph then adult
    • -do not burrow to lay eggs
  5. what are the ROT for cheyletiella yasguri?
    direct contact with infected animal
  6. what is the treatment and control of cheyletiella yasguri?
    • Insecticides
    • cannot survive long off host
    • can persist in bedding, cages
    • and wooden floors
    • -do not burrow to lay eggs
  7. what ecto parasite is this?
    Image Upload 1
  8. main points on otodectes cyanotis
    • Nickname ear mite
    • -usually seen in cats
    • -lives in ear canal and
    • surrounding area
    • -contagious and not host
    • specific
  9. what are the clinical signs of otodectes cyanotis?
    • -Increased wax production in the otis externa
    • -ear and pruritic and inflamed
    • -dark crusty exudate from from ear canal
    • -possible aural hematomas
  10. how do you dx otodectes cyanotis?
    • Top3
    • examinatinon of ear swab under
    • a microscope
  11. what is the life cycle of otodectes cyanotis?
    • -Adult mites live on surface
    • of skin within ear canal
    • <<<-similar to other
    • mites
    • -takes 3 weeks to complete
  12. what are the ROTs of otodectis cyanitis?
    • Close or direct contact with
    • infected animal
  13. what are the treatment and control of otodectes cyanitis?
    • Treat all infected animals in
    • household (mites out, tresaderm, revolution, advantage multi)
    • -treat with insecticide (only
    • gets adults)
    • -exam when medication is
    • finished
    • -may need oral antibiotics
    • -isolate from other animals
  14. what parasite is this?Image Upload 2
    ear mite, otodectes cyanotis
  15. some main points of Demodex canis
    • Nickname red mange,
    • demodectic mange

    -disease called Demodecosis

    • -tiny worm like mites with
    • short stubby legs and described as cigar shaped

    • -host specific lives in
    • skin and hair follicles and glandular ducts

    • -may be found in small
    • numbers on healthy dogs

    • -in an infection mites
    • multiply and cause an overgrowth

    • -few areas affectesd
    • (localised mange) or large areas generalized mange
  16. what are the clinical signs of demodex canis?
    • -warm skin ,red crusty
    • apearance lesions most commonly start around eyes and mouth
    • -skin bleeds easily,smells
    • rancid
    • -alopecia
    • -often accompaning staph
    • infections
    • -little or no sign of prutitis
    • (because in hair follicle not skin)
  17. how do you dx demodex canis?
    • Top 3
    • deep skin scraping
    • skin biopsy
  18. what is the life cycle od demodex canis?
    • -Can be normal floura
    • increased through illness stress or immune suppression
    • -similar to other mites
    • -life cycle spent on hair
    • follicles or sebacious glands.

    • eggs>larva>nymph>adult(live
    • in hair)>eggs
  19. what are the rots of demodex canis?
    • Most common root is mother to
    • pups
    • not all aspects of demodex are
    • known.
  20. what are the treatment and control of demodex canis?
    • -Antibiotics for resulting staph infections
    • -topicals for localized infestasion
    • -systemics for generalized eg ivermetin orally
    • -advantage multi and revolution off lable
  21. what parasite is this?
    Image Upload 3
  22. main points of sarcoptes species?
    • -Nicknames sarcopic mange or scabies in humans
    • -zoonotic
    • -contagious to dogs rarely seen in cats
    • -can burrow 1/2mm deep can be difficult to dx and treat
    • -chronic cases can be debilitating
  23. what are the clinical signs of sarcoptes species?
    • Alopecia
    • pruritis
    • self inflicted trauma
    • formation of crusts and scabs
    • skin redness usually due to
    • secondary bacterial infection
  24. how do you dx sarcoptes species?
    • Top 3
    • multiple skin scrapings
    • may require skin biopsys
    • usually found on ear
    • margains face abdomen axillae hocks and elbows
  25. what is the life of sarcoptes species?
    • Burrow directly into the skin
    • -similar to other mites
    • -eggs hatch in 3-7 days larvae burrow up to skin
    • surface to feed develop into nymph stage
    • -nymphs travel to skin surface to feed
    • -moult into adults
    • -mate and deposit eggs
    • -complete in 3 weeks
  26. what are the roots of transmission of sarcoptes species?
    • Direct contact with
    • infected dog
    • -bedding
  27. what are the treatments and control of sarcoptes species?
    • Pesticides including dips oral and topical medications
    • -clipping hair may be necessary
    • -kennel areas grooming tools and other fomites would need to be treated with insecticides
    • -revolution and advantage multi
  28. what parasite is this?
    Image Upload 4
  29. main points on ticks?
    • Many species are found locally
    • -most common type ixodes sp
    • -easily viewed by naked eye
    • -engorged adult may be over 1cm in diameter

    • -all suck blood
    • -may act as vectors for other parasites which cause such medical conditions as tick paralysis,
    • rocky moutain spotted fever and lyme disease

    -can also afffect humans
  30. what are the clinical signs of ticks?
    • Visualization of tick on
    • animal
    • -paralysis
    • -anemia and weakness in large
    • infestations
  31. how do you dx ticks/?
    Visual- attached to hosts skin
  32. what is the life cycle of the tick?
    • Female lays eggs in
    • environment not on animal

    • ---eggs>larva>6 legged
    • nymph>8 legged adult>eggs
  33. what are the roots of transmission for ticks?
    • Falls onto hosts from trees
    • bushes ect and crawls up from grass
  34. what are the treatments and control for ticks?
    • Most inportant to remove
    • tick and head
    • rubbing alcohol dish
    • detergent
    • products which preventative
    • -frontlione
    • frontline plus
    • preventative collar
    • ovitrol duel action collar
    • revolution dogs and
    • advantix
  35. which ectoparasite is this?
    Image Upload 5
Card Set
ecto-parasites &arachnids
arachnids-mites,odectes cyanotis,demodex canis, sarcoptes species, ticks parasite review 4