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More about… Ectoparasites

More about… Ectoparasites. Laboratory Procedures. Remember Ectoparasites?. Major Classes of Ectoparasites. Arthropods _________________ _________________. Insects . ___________ ___________ ___________. Lice (______________). Mallophaga (________________________)

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More about… Ectoparasites

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  1. More about…Ectoparasites Laboratory Procedures

  2. Remember Ectoparasites?

  3. Major Classes of Ectoparasites • Arthropods • _________________ • _________________

  4. Insects ___________ ___________ ___________

  5. Lice (______________) • Mallophaga (________________________) • Trichodectes canis (_________________) • Anoplura (_________________________) • Linognathus setosus (_______________)

  6. Trichodectes canis (Biting louse) Found as ___________________ in the cat Cause ______________ hair coat, ____________ and ______________ May act as intermediate host to ____________________________.

  7. Trichodectes canis

  8. Linognathus setosus (______________ louse of dogs) Causes ________________, itching, _______________, alopecia, ____________, roughened hair coat Usually transmitted by ___________________, but all life stages may be transmitted by _______________. Are _______________________.

  9. Ctenocephalides felis (Flea) Infest dogs and cats Vector for _________________ caninum, tularemia, plague, etc. Die at temperatures below ______° F for 48 hours or at temperatures above _________° F for several days Over ________ species of fleas worldwide Severe infestations can cause __________.

  10. Flea Life Cycle Eggs laid at rate of up to _____ per _____. After about ___days, larvae hatch and feed on any organic material for __________ days. (Preferred meal is “___________________”) Before becoming adults, larvae spin a ___________and develop into an adult flea. Adult will remain in _______ until they sense ____________ or increase in _______, causing them to emerge and find their host.

  11. Life cycles of Ctenocephalides felis

  12. Adult flea

  13. Flea allergy dermatitis

  14. Cuterebra (Rodent Bot Fly larva) Infests ____________, companion animals and occasionally _____________. (____________) __________ stage that infests skin Acts as an irritant _______________ may be fatal Have a cutaneous lump with a breathing hole Use care when extracting as crushing larva may result in ________________.

  15. Cuterebra embedded in skin

  16. Arachnids (_____________) Sarcoptes scabiei (______________) Demodex canis (________________________) Otodectes cynotis (_______________) Cheyletiella parasitivorax (___________________) Rhipicephalus sanguineus (________________) Dermacentor variabilis (___________________) Amblyomma americanum (________________) Ixodes scapularis (____________________)

  17. The Mites Sarcoptes scabiei/ Notoedres cati Demodex canis Otodectes cynotis Cheyletiella parasitivorax

  18. Sarcoptes scabiei (Scabies) Found as _________________________ in cats Causes intense itching, dry and thickened skin. Is contagious to ____________ and other pets Mites burrow under the skin so may be difficult to diagnose. Diagnose through a _________________. Usually have “ventral blowout”

  19. Demodexcanis (Demodectic Mange) Rare in _____________ Causes areas of alopecia on _________, ________, and forelimbs. Can be ______________ or _______________. Diagnosed with ______________________. (May also pluck hair from root) Is not _____________________ Small numbers considered ________________ on skin flora. Genetic ________________________.

  20. Demodex mite “hiding” on a hair pluck

  21. Otodectes cynotis (Ear mites) Intense _____________ of the ear canal. Can be found on any area of the body. Not very common in ___________. Feed on ________________________ and are easily ________________.

  22. Otodectes cynotis

  23. Cheyletiella parasitivorax (Walking Dander mite) Causes mild ______________ and _______________. May cause _________________ in humans Ingest ____________ debris and tissue fluids Have enormous _______________ accessory mouthparts Are __________________________.

  24. The Ticks • Argasid ticks (_____________) • Otobius megnini (ear tick) • Argas persicus (fowl tick) • Ixodid ticks (________________) • Ixodes scapularis • Rhipicephalus sanguineus • Dermacentor variabilis • Amblyomma americanum

  25. Rhipicephalussanguineus (Brown dog tick) • Vector for canine _____________and canine __________________________. • May cause __________________ when found in large numbers. • Common in North America and Hawaii, especially ________________ and __________________ states. • _____________ intolerant.

  26. Babesia canis

  27. Ehrlichia canis Morulae present in Monocyte

  28. Rhipicephalus sanguineus

  29. Female R. sanguineus w/ eggs

  30. DermacentorVariabilis (American Dog Tick) Feeds on small mammals but can also feed on ________ and ____________. Vector for ___________________Fever, ______________, and can cause _______________________ in animals and humans. May cause Cytauzoon felis in cats.

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