Parasitology (LAB) lice and fleas

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Author:
jill.hinton
ID:
304547
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Parasitology (LAB) lice and fleas
Updated:
2015-07-11 03:04:48
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vtht lonestar younger vet tech parasitology
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Lice and Fleas
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  1. Depending on the morphology and habits of the lice they are all of the Order ___________ or  ___________.
    Mallophaga or Anoplura
  2. ______ - sucking lice, larger, more pathogenic, slower moving
    Anaplura
  3. __________ - biting/chewing lice, mouth is mandible like parts
    Mallophaga
  4. The disease of lice is referred to as:
    pediculosis
  5. Lice life cycle is an _____________.
    1.
    2.
    3.
    • incomplete metamorphosis
    • 1. eggs (known as louse eggs or nits) must have feathers/hairs to attach to
    • 2. eggs hatch into tiny replicas of the adult
    • 3. several molts with minor changes
  6. Lice very host specific, generally spend entire life on the host or they die. Exception is ___________ clings to the clothing instead of body hairs during feeding.
    Pediculus corporis
  7. When people are unable to bath or change clothes, _____________ can be transmitted
    Epidemic Typhus
  8. Most common lice of Mallophaga
    1.
    2.
    3.
    4.
    • Trichodectes canis - dogs, coyotes, wolves
    • Heterodoxus spiniger - dogs, coyotes
    • Felicola subrostrata - cat, bobcat, large cats
    • Damalinia equi - horse
  9. Common lice of Anoplura
    Linognathus setosus - dogs, foxes, coyotes, rabbits, ferrets, wolves, cats
  10. 4 things that cause pathogenic pruritis
    • fleas
    • food allergies
    • sarcoptic mange
    • atopy (inhalant allergies)
  11. _________ are the result of sensitizing the dog or cat to flea bites by periodic repeats
    flea bite allergies
  12. Fleas show little host specificity as ___________ is the most universally common flea parasite
    Ctenocephalides felis
  13. List some disease that the flea serves as a vector
    Bubonic plague, Endemic typhus, Dipylidium caninum, Anoplocephala,
  14. Endemic Typhus is caused by
    Rickettsia prowazeki
  15. Copulation in fleas occurs _______.
    after a blood meal
  16. Egg to egg can be laid as little as _________ under ideal temperature and humidity
    16 days
  17. Ideal temperature and humidity for egg to egg production in fleas
    • 65°F-80°F
    • 70% humidity
  18. ________ speacies of fleas and only two will affect our domestic animals
    1.
    2.
    3.
    • 1500
    • Ctenocephalides feli
    • C. canis
    • Pulex irritans
  19. Human flea:
    Human louse:
    • flea - Pulex irritans
    • Louse - Pediculus corporus
  20. Egg prodution begins within _____ after the females have taken their first meal almost immediately after acquiring a host
    24-48 hrs
  21. Most common Anoplura
    Most common Mallophaga
    • Sucking lice - Linognathus sets us (dog)
    • Biting lice - Trichodectes canis (dog), Felicola subrostrata  (cat)
  22. Flea activity on the host
    • Fleas mate within 12 hours on host
    • eggs produced within 24 hrs on host
    • female flea will avg 27 eggs per day 
    • 2,000 eggs produced in a lifetime
  23. What are fleas attracted to
    • Dark clothes
    • lactic acid 
    • carbon dioxide
    • dark areas
    • dry places
  24. Percentage of each flea stage found off the host
    • Eggs 50%
    • Larvae 35%
    • pupae 10%
    • adult 5%
  25. Term used by parasitologist to indicate where the eggs have been laid
    Source point
  26. Two methods in eliminating fleas are available
    • Kill the flea 
    • Interference with its reproduction/hatching

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