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PARASITOLOGY > L10: Mites > Flashcards

L10: Mites Flashcards

1
Q

physical characteristics of mites

A
  • head, thorax and abdomen are fused
  • larvae have 6 legs, nymphs + adults have 8 legs
  • mites are microscopic
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2
Q

what order of mites are blood feeders

A

Mesostigmata

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3
Q

Demodex and Eutrombicula belong to what order of mites

A

Prostigmata

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4
Q

what is this

A

Demodex
(Prostigmatid mite)

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5
Q

what order of mites

A

Mesostigmata

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6
Q

what order of mites

A

Astigmatid

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7
Q

almost all mites have how many nymphal stages

A

2 or 3

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8
Q

mite eggs hatch into ___ legged larvae and then the larvae molt into ___ legged nymphs

A

6, 8

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9
Q

on average, how long is the mite life cycle length

A

about 3 weeks

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10
Q

how are mites primarily transmitted

A

by direct contact from host

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11
Q

Ornithonyssus sylvarium

A

Northern fowl mite
external mites - blood feeders

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12
Q

what is the host of Ornithonyssus sylvarium

A

poultry and wild birds

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13
Q

Ornithonyssus sylvarium spend their entire life cycle on ….

A

the host

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14
Q

Dermanyssus gallinae

A

red poultry mite
external mites - blood feeders

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15
Q

what are the hosts of Dermanyssus gallinae

A

wild and domestic birds

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16
Q

Dermanyssus gallinae mostly reside ____ and move to the host to _____

A

off the host
feed at night

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17
Q

Eutrombicula alfreddugesi

A

common chigger, harvest mite

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18
Q

what is unique about Dermanyssus gallinae

A

only the larval stage is parasitic!

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19
Q

what stage(s) of Dermanyssus gallinae are free living (feed on decaying matter and insects in soil)

A

nymphs and adults

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20
Q

what are the clinical signs of infestation by eutrombicula alfreddugesi

A

organge cursting dermatosis
intense pruiritis, erythema, papules

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21
Q

Psoroptes ovis

A

scab mice

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22
Q

what are the hosts of Dermanyssus gallinae

A

poultry

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23
Q

Dermanyssus gallinae spend their entire life cycle on ______

A

the host

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24
Q

Chorioptes bovis

A

Chorioptic mange mite

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25
Q

what are the hosts of Chorioptes bovis

A

cattle, horses, sheep, goats, rabbits

26
Q

predilection site of Chorioptes bovis

A

lower hing legs and tail

27
Q

Psorobia ovis

A

sheep itch mite

28
Q

Psorobia bos

A

cattle itch mite

29
Q

Cheyletiella spp

A

fur mites “walking dandruff”

30
Q

Cheyletiella yasguri affect ..

A

dogs

31
Q

Cheyletiella blakei affect…

A

cats

32
Q

Cheyletiella parasitivorax affect….

A

rabbits

33
Q

Lynxacarus radovskyi

A

cat fur mite

34
Q

mites that reside in hair follicles and glands

A

Demodex spp

35
Q

what are the hosts of Demodex spp

A

most domestic animals; there are also host-specific species

36
Q

what mite is this

A

Demodex mites

37
Q

Demodex spp spend their entire life cycle on..

A

the host

38
Q

Sarcoptes scabiei

A

sarcoptic mange mites

39
Q

what are the hosts of Sarcoptes scabiei

A

most domestic animals; there are also host specific species

40
Q

Notoedres cati

A

feline scabies mites

41
Q

Knemidocoptes mutans

A

scaly leg mite

42
Q

hosts of Knemidocoptes mutans

A

chickens, turkeys, wild birds

43
Q

mites that burrow under the superficial epidermis of the feet of chickens, turkeys, wild birds

A

Knemidocoptes mutans

44
Q

mites that affect cats, characterized by crust formation, alopecia and hyperkeratosis

A
45
Q

Otodectes cynotis

A

ear mite of dogs and cats

46
Q

Raillietia auris

A

cattle ear mite

47
Q

Pneumonyssoides caninum

A

canine nasal mite

48
Q

found within nasal canals of canines, causes chronic sneezing

A

Pneumonyssoides caninum

49
Q

Sternostoma tracheocolum

A

avaian nasal mite

50
Q

blood sucking mite of the respiratory system, hosts are wild and domestic birds, can result in chronic respiratory illness

A

Sternostoma tracheacolum

51
Q

Pyemotes tritici

A

hay itch mites
*environmental mite
* potential as biological pest control

52
Q

which mite burrows into the epidermis of its host, causing an intensely pruritic, erythematous papular rash?

A

Sarcoptes sacabiei

53
Q

chiggers are unique in that…

A

the larval stage is parasitic by secreting digestive enzymes that break down host tissue

54
Q

what physical structures are unique to the male Astigmata mite

A
  • copulatory sucker for adherence to a female
  • tubercules: postesior extensions
55
Q

what type of mites have setae: elongated sensory hairs

A

Astigmata

56
Q

what type of mite is composed of a Gnathosoma: head and Idiosoma: body

A

Prostigmata

57
Q

what type of mite is Demodex spp

A

Prostigmata

58
Q

what type of mite is Eutrombicula (chiggers)

A

Prostigmata

59
Q

what type of mite is Chorioptes bovis

A

Astigmata

60
Q

what type of mite is Ornithonyssus sylvarium

A

Mesostigmata

PARASITOLOGY (14 decks)

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