L10: Mites

Question 1

physical characteristics of mites

Answer 1

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

Question 2

what order of mites are blood feeders

Answer 2

Mesostigmata

Question 3

Demodex and Eutrombicula belong to what order of mites

Answer 3

Prostigmata

Question 4

what is this

Answer 4

Demodex
(Prostigmatid mite)

Question 5

what order of mites

Answer 5

Mesostigmata

Question 6

what order of mites

Answer 6

Astigmatid

Question 7

almost all mites have how many nymphal stages

Answer 7

2 or 3

Question 8

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

Answer 8

6, 8

Question 9

on average, how long is the mite life cycle length

Answer 9

about 3 weeks

Question 10

how are mites primarily transmitted

Answer 10

by direct contact from host

Question 11

Ornithonyssus sylvarium

Answer 11

Northern fowl mite
external mites - blood feeders

Question 12

what is the host of Ornithonyssus sylvarium

Answer 12

poultry and wild birds

Question 13

Ornithonyssus sylvarium spend their entire life cycle on ….

Answer 13

the host

Question 14

Dermanyssus gallinae

Answer 14

red poultry mite
external mites - blood feeders

Question 15

what are the hosts of Dermanyssus gallinae

Answer 15

wild and domestic birds

Question 16

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

Answer 16

off the host
feed at night

Question 17

Eutrombicula alfreddugesi

Answer 17

common chigger, harvest mite

Question 18

what is unique about Dermanyssus gallinae

Answer 18

only the larval stage is parasitic!

Question 19

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

Answer 19

nymphs and adults

Question 20

what are the clinical signs of infestation by eutrombicula alfreddugesi

Answer 20

organge cursting dermatosis
intense pruiritis, erythema, papules

Question 21

Psoroptes ovis

Answer 21

scab mice

Question 22

what are the hosts of Dermanyssus gallinae

Answer 22

poultry

Question 23

Dermanyssus gallinae spend their entire life cycle on ______

Answer 23

the host

Question 24

Chorioptes bovis

Answer 24

Chorioptic mange mite

Question 25

what are the hosts of *Chorioptes bovis*

Answer 25

cattle, horses, sheep, goats, rabbits

Question 26

predilection site of *Chorioptes bovis*

Answer 26

lower hing legs and tail

Question 27

*Psorobia ovis*

Answer 27

sheep itch mite

Question 28

*Psorobia bos*

Answer 28

cattle itch mite

Question 29

*Cheyletiella spp*

Answer 29

fur mites "walking dandruff"

Question 30

*Cheyletiella yasguri* affect ..

Answer 30

dogs

Question 31

*Cheyletiella blakei* affect...

Answer 31

cats

Question 32

*Cheyletiella parasitivorax* affect....

Answer 32

rabbits

Question 33

*Lynxacarus radovskyi*

Answer 33

cat fur mite

Question 34

mites that reside in hair follicles and glands

Answer 34

*Demodex spp*

Question 35

what are the hosts of *Demodex spp*

Answer 35

most domestic animals; there are also host-specific species

Question 36

what mite is this

Answer 36

*Demodex* mites

Question 37

*Demodex spp* spend their entire life cycle on..

Answer 37

the host

Question 38

*Sarcoptes scabiei*

Answer 38

sarcoptic mange mites

Question 39

what are the hosts of *Sarcoptes scabiei*

Answer 39

most domestic animals; there are also host specific species

Question 40

*Notoedres cati*

Answer 40

feline scabies mites

Question 41

*Knemidocoptes mutans*

Answer 41

scaly leg mite

Question 42

hosts of *Knemidocoptes mutans*

Answer 42

chickens, turkeys, wild birds

Question 43

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

Answer 43

*Knemidocoptes mutans*

Question 44

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

Question 45

*Otodectes cynotis*

Answer 45

ear mite of dogs and cats

Question 46

*Raillietia auris*

Answer 46

cattle ear mite

Question 47

*Pneumonyssoides caninum*

Answer 47

canine nasal mite

Question 48

found within nasal canals of canines, causes chronic sneezing

Answer 48

*Pneumonyssoides caninum*

Question 49

*Sternostoma tracheocolum*

Answer 49

avaian nasal mite

Question 50

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

Answer 50

*Sternostoma tracheacolum*

Question 51

*Pyemotes tritici*

Answer 51

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

Question 52

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

Answer 52

*Sarcoptes sacabiei*

Question 53

chiggers are unique in that...

Answer 53

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

Question 54

what physical structures are unique to the male Astigmata mite

Answer 54

* copulatory sucker for adherence to a female * tubercules: postesior extensions

Question 55

what type of mites have setae: elongated sensory hairs

Answer 55

Astigmata

Question 56

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

Answer 56

Prostigmata

Question 57

what type of mite is *Demodex spp*

Answer 57

Prostigmata

Question 58

what type of mite is *Eutrombicula* (chiggers)

Answer 58

Prostigmata

Question 59

what type of mite is *Chorioptes bovis*

Answer 59

Astigmata

Question 60

what type of mite is *Ornithonyssus sylvarium*

Answer 60

Mesostigmata