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Parasitology > Canine/Feline Insects > Flashcards

Canine/Feline Insects Flashcards

1
Q

Cuterebra spp-Taxonomic Classification

A

Order: Diptera
Family: Oestridae
Common Name: Rodent Bot Fly, Rabbit Bot Fly, New World Skin Bot Flies

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2
Q

Cuterebra spp.-Hosts

A

Rabbits rodents are principle hosts.
Dogs, cats
*Zoonosis

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3
Q

Cuterebra spp.-Identification

A

Adults: large (20-30mm), stout bodied and bee-like, mouthparts are vestigial and nonfunctional, short lived
3rd Stage Larvae: 2-4 cm long, dark brown, covered with black spines, obligatory parasites, host specific

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4
Q

Cuterebra spp.-Life Cycle

A

ELPA
Female lays eggs in the environ. near the host’s nest→egg can sense temperature and will hatch instantaneously when a host brushes past→enter host through skin or natural body openings→migrates to subcutaneous site→develop into 3rd larval stage→emerge through skin and drop to soil to pupate→adult emerge in spring.

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5
Q

Cuterebra spp.-Site of Infection

A

Subcutaneous connective tissue

Nasal and oral regions and migrate to brain

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6
Q

Cuterebra spp.-Pathogenesis and Lesions

A

Fibrotic cyst forms from larva in subcutaneous tissue
Migration to brain leads to infarction (tissue death due to obstruction of blood supply) and ischemic encephalopathy (deficiency of blood because of obstruction)

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7
Q

Cuterebra spp.-Clinical Signs

A

Lump in neck or legs, fur constantly wet, hole drips clear fluid

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8
Q

Cuterebra spp.-Diagnosis

A

See larvae within subcutaneous skin

Remove carefully with forceps

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9
Q

Cuterebra spp.-Treatment and Prevention

A

None approved

MCL heartworm prevention, imidacloprid, and fipronil may protect host

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10
Q

Culicidae-Taxonomic Classification

A

Genera: Aedes, Anopheles, Culex

Common Name: Mosquitoes

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11
Q

Culicidae-Identification

A

1 pair of wings, 1 pair of halteres, legs are thin and long, complex mouthparts form a long proboscis, antennae as long as proboscis, palps

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12
Q

Trichodectes canis-Taxonomic Classification

A

Order: Phthiraptera
Suborder: Ischnocera (Mallophaga)
Common Name: Dog biting louse or canine chewing louse

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13
Q

Trichodectes canis-Hosts

A

Dogs

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14
Q

Trichodectes canis-Identification

A

Adult: wingless, 1.9mm long, head as broad or broader than thorax, biting mouthparts, yellowish
Eggs (nits): elongate, operculate, whitish and easily noticed

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15
Q

Trichodectes canis-Life Cycle

A

ENNNA
Adult female lays eggs→hatch to nymphs→3 molts→adult
Host specific and requires the host for entire life cycle

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16
Q

Trichodectes canis-Site of Infection

A

Hair, skin, edge of ears

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17
Q

Trichodectes canis-Pathogenesis and Lesions

A

Vector for Dipylidium caninum

Found in animals that are neglected and underfed

18
Q

Trichodectes canis-Clinical Signs

A

Puritus, loss of hair, scratching, restlessness, anemia can occur

19
Q

Trichodectes canis-Diagnosis

A

Id of louse

20
Q

Trichodectes canis-Treatment and Prevention

A

Spread by direct dog to dog contact

Inseticides

21
Q

Linognathus setosus-Taxonomic Name

A

Order: Phthiraptera
Suborder: Anoplura
Common Name: Dog Sucking Louse

22
Q

Linognathus setosus-Hosts

A

Dogs

23
Q

Linognathus setosus-Identification

A

Adults: wingless, 3-5 mm long, flattened dorsoventrally, slate gray, narrower head than thorax, sucking mouthparts
Eggs (nits): elongate, operculate and whitish

24
Q

Linognathus setosus-Life Cycle

A

ENNNA
Adult female lays eggs→hatch to nymph→3 molts→adult
Nymph and adult can only survive a few hours off host
Cycle takes 2-4 weeks

25
Q

Linognathus setosus-Site of Infection

A

Skin

26
Q

Linognathus setosus-Pathogenesis and Lesions

A

Severe anemia with heavy infection

27
Q

Linognathus setosus-Clinical Signs

A

Loss of body condition

Damage to skin

28
Q

Linognathus setosus-Diagnosis

A

Id of louse

29
Q

Linognathus setosus-Treatment and Prevention

A

Spread by direct dog to dog contact

Insecticides

30
Q

Ctenocephalides felis/canis-Taxonmonic Classification

A

Order: Siphonaptera

Common Name: cat/dog flea

31
Q

Ctenocephalides felis/canis-Hosts

A

Dogs and Cats

32
Q

Ctenocephalides felis/canis-Identification

A

Adults: 3 mm, dark brown, wingless
Pupa: 5 mm, color varies
Larva: 5 mm, worm-like
Egg: 0.5 mm, oval, pearly white

33
Q

Ctenocephalides felis/canis-Life Cycle

A

ELPA
Adults lay eggs→eggs fall off host into environment (“salt shaker”)→ eggs hatch into larval stages→3rd larval stage spin cocoon into pupa→pre-emerged adults are stimulated to emerge (can survive for 30 wks)→newly emerged adults can survive 2 weeks w/o feeding→jump onto host

34
Q

Ctenocephalides felis/canis-Site of Infection

A

Skin, back, ventral abdomen, inner thighs

35
Q

Ctenocephalides felis/canis-Pathogenesis and Lesions/Clinical Signs

A

Flea bite allergy→intense pruritus and dermatitis even from low number of fleas
Large number of fleas can cause severe pruritus, alopecia and anemia
Vectors of viruses, bacteria (Bartonella henselae), tapeworms etc.

36
Q

Ctenocephalides felis/canis-Diagnosis

A

Presence of fleas, flea feces, blood on host and in bedding

37
Q

Ctenocephalides felis/canis-Treatment and Prevention

A

Requires breaking life cycle in several places
Insecticides help but do not treat all life stages
Environmental control→vacuum frequently, mow lawn/rake clippings, allow treated pet to roam usually places, foggers, dusting powders, sprays

38
Q

Reduviidae-Taxonomic Classification

A

Order: Hemiptera

Common Name: Assassin bugs or kissing bugs

39
Q

Cimicidae-Taxonomic Classification

A

Order: Hemiptera

Common Name: Beds bugs

40
Q

Reduviidae/Cimicidae-Hosts

A

Many animals and humans
Reduviidae: painful bites
Cimicidae: painless bites

41
Q

Reduviidae/Cimicidae-Identification

A

Bedbugs: 5-7 mm in length
Reduviids: 18 mm in length
Mouthparts are beaks, designed for piercing and blood sucking

Parasitology (16 decks)

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