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73 Cards in this Set
- Front
- Back
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Diagnosis of mites |
Finding mite nests on fomites
Use cellophane tape Pluck hairs |
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Mite life cycle |
Feed on animal blood then drop off animal into bedding
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Clinical signs of mites |
Anemia and decreased reproduction, alopecia
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Mice fur mites are also called |
Myobia musculi, Myocoptes musculinus and Radfordia affinis
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Describe mice fur mite eggs |
Mite eggs are attached near the base of the hair
Eggs are oval |
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Where do mice fur mite eggs hang out? |
To detect mites – pluck fur or use cellophane tape
Neck region of the mouse |
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What is a follicle dwelling mite?
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Demodex
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Diagnosis of demodex |
Deep skin scrapinge
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Clinical signs of demodex |
Alopecia, dry scaly skin, dermatitis, may have no signs
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What method does demodex transmit?
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Direct
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Lice
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Guinea-Pig mallophaga = Gliricola porcelli and Gyropus ovalisGuinea Pig Pet store special
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Physical description of demodex |
Longated or cigar-shaped
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What rodents can get demodex? |
Hamster,gerbil,and rats
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What is the only rodent that commonly gets lice? |
Guinea-Pig mallophaga = Gliricola porcelli and Gyropus ovalis
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What is the common name for Polyplax serrata?
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House mouse louse |
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Polyplax serrata is the intermediate host of what?
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Mycoplasma haemofelis (feline infectious Anemia)
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What are the 2 types of parasites? Use the proper and common names. |
Endoparasites = internal parasites
Ectoparasites = external parasites |
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Name the ectoparasites in the classes insects and arachnids
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Insects: Fleas, Lice, Flies
Arachnids: Mites, Ticks |
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What is the host? |
Organism that carriers a parasite, provides nourishment and shelter
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What is the definitive host? |
Final Host
Animal that carrier the sexually mature adult |
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What is the intermediate host? |
Animal that a parasite lives on during the larval or non-reproductive stage
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What does Arthropod mean?
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Jointed foot
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What are the Arthropods? |
Mites, Ticks, Lice, Fleas
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What are the 4 important things about Arthropods? |
1. Contribute to animal distress
2. Produce venom/toxins 3. Intermediate host for protozoa & helminths 4. Vectors for bacteria and viruses |
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Proper name for Fleas
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Ctenocephalides canis or felis
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Ctenocephalides Felis vs Canis
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Felis - more common, piercing-sucking mouthparts |
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How do you diagnose Ctenocephalides?
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Observing adult flea or flea dirt.
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Ctenocephalides are an intermediate host for?
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Dipylidium caninum and for Dipetalonema reconditum
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What 4 things do you need to remember when treating fleas/Ctenocephalides? |
Eggs fall off into environment
Larva Hatches from egg Larvae pupate is resistant, dormant for mnths Adult flea from pupa |
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Draw the flea life-cycle.
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Definitive host > eggs > larva > pupa > adult >
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Fleas act as _____ of various diseases. |
vectors
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What can flea saliva do? |
Irritate and cause antigenic reaction
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What is the proper term for the irritation caused by flea saliva? |
Flea allergy dermatitis
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How do you treat for fleas? |
Spray coat with insecticide
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What is not usually found on the host for fleas? And why? |
Eggs because not sticky
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Describe flea eggs |
Ovoid and white
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How do you test to see if debris on coat is flea dirt? |
Put debris on white paper towel, add few drops of water If red/brown then flea dirt |
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Are ticks host specific? |
No, zoonotic |
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What can ticks carry? |
Diseases, ex. lyme disease |
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What may ticks release? |
Neurotoxins |
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How many hosts can a tick have in it's lifecycle? |
3 |
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What are the two types of ticks? |
Hard and soft
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Describe a hard tick |
Chitinous outer shell
3 hosts in life |
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Describe a soft tick |
Leathery covering
Not usually disease carrying |
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Describe the tick lifecycle |
Biting adults > Eggs > Biting Larvae > Biting Nymphs
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At what life stages can a tick transmit a disease? |
Nymphs and Adults |
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What location(s) do lice spend their lifecycle? |
Always on host |
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What are other names for lice eggs? |
Nits (attached to hair base) |
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Are lice host specific? |
Yes |
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What are the 2 types of lice? |
Sucking and biting/chewing
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Describe Sucking Lice |
Large abdomens, may be reddish if they ingested blood
Claws Narrower head than thorax |
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Describe Chewing/Biting Lice |
Wider head than thorax
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What is the proper name for chewing/biting lice?
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Mallophaga
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What is the proper name for sucking lice?
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Anoplura
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Lifecycle of lice |
Egg > 3 nymph stages > adult
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Describe demodex mites |
Long body with short stubby legs
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What is a heavy infestation of demodex called? |
Demodicosis
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Is demodex host specific? |
Yes
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Can demoxed by transfers between one patient to another? |
Non transmissible
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Where does demodex stay in the host? |
Hair follicles and sebaceous glands
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How do you test for demodex? |
Deep skin scrapings, pinched to recover the mite
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What are the main types of mites? |
Otodectes Sarcoptes Notoedres Demodex Cheyletiella |
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What can Sarcoptes cause? |
Scabies
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Where do Otodectes stay in the host? |
External ear canal |
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What is the lifecycle of a mite? |
Egg > Instar Nymph 1-3 (Larva, Protonymph, Duetonymph) > Adult
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Where does Cheyletiella live on in the host?
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Skin surface
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Cheyletiella is commonly called
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Walking dandruff
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Is Cheyletiella host specific? |
Relitively |
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What are the Cheyletiella clinical signs? |
Excessive scaling and crusting on the dorsal aspects of the body
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What is the fly that lays their eggs on the skin of animals? |
Cuterebra
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Where do the Cuterebra larva resign? |
In a subcutaneous cyst with a fistula
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What is the treatment for Cuterebra? |
Surgical removal
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Life cycle of cuterebra
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Adult > Egg > Instar Larava (1-3) > Pupa >
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