External Parasites

Question 1

what parasites live or feed upon the skin of an animal?

Answer 1

Ectoparasites

Question 2

what is the presence of extoparasites referred to as?

Answer 2

infestation

Question 3

what are the goups of arthropods? (2)

Answer 3

1. insects

2. arachnids

Question 4

what are some insects? (3)

Answer 4

1. Lice
2. fleas
3. flies

Question 5

how many legs do insects have?

where do they origionate?

Answer 5

6 legs

the thorax

Question 6

what are the 3 segments of an insects body?

Answer 6

head
thorax
abdomen

Question 7

what are some arachnids? (2)

Answer 7

Ticks

mites

Question 8

what are the 2 segments of an arachnids body?

Answer 8

fused head/thorax

abdomen

Question 9

how many legs do arachnids have?

where do they origionate?

Answer 9

8 legs

abdomen

Question 10

what irritation can parasites cause?

Answer 10

biting and crawling

Question 11

what can the presence of parasites cause? (3)

Answer 11

Loss of body condition
Anemia
Disease transmission

Question 12

how are infestation diagnosed?

Answer 12

1. Some visible to the naked eye

2. Some easily collected by skin scraping for microscopic identification

Question 13

what is the genus/species for the flea?

Answer 13

Ctenocephalides spp.

Question 14

what can cause flea pupae to hatch?

Answer 14

stimulation

Question 15

what can a flea infestation cause to the animal? (3)

Answer 15

Irritation and itching
loss of body condition
flea allergy dermatitis

Question 16

how is the plague transmitted?

Answer 16

infected rodent flea

Question 17

what is the genus and species of ear mites?

Answer 17

Otodectes cynotis

Question 18

what is the genus and species name for the fur mite (walking dandruff mite)?

Answer 18

Cheyletiella spp.

Question 19

what is the genus and species name for the mange mite?g

Answer 19

Sarcoptes scabiei

Question 20

what can Cheyletiella spp. cause?

Answer 20

Alopecic dermatitis

Question 21

what can sarcoptes scabiei cause?

Answer 21

Severe dermatitis

Question 22

what is the genus and species for the Follicular Mange Mite?

Answer 22

Demodex spp.

Question 23

what can demodes spp. caues?

Answer 23

Severe dermatitis

Question 24

what family are biting lice from?

Answer 24

Mallophaga

Question 25

which family is Trichodectes canis from?

Answer 25

mallophaga

Question 26

what is the genus and species of the dog biting louse?

Answer 26

trichodectes canis

Question 27

what internal parasite is trichodectes canis the intermediate host for?

Answer 27

diplydium caninum

Question 28

what can trichodectes canis cause?

Answer 28

dermatitis | rough hair coat

Question 29

what family are sucking lice from?

Answer 29

anoplura

Question 30

what is the genus and species name for the dog sucking louse?

Answer 30

Linognathus setosus

Question 31

what family is Linognathus setosus from?

Answer 31

anoplura

Question 32

what can linoganthus setosus cause? (3)

Answer 32

dermatitis rough hair coat anemia

Question 33

what is acariasis?

Answer 33

infestation w/ ticks or mites

Question 34

what family are hard ticks from?

Answer 34

Family ixodidae

Question 35

what family are soft ticks from?

Answer 35

Family Argasidae

Question 36

which tick family do both sexes engorge them selves?

Answer 36

argasidae (soft ticks)

Question 37

what is another name for the hard shell of a tick?

Answer 37

scutum

Question 38

what is the genus and species name for the brown dog tick?

Answer 38

Rhipicephalus sanguineus

Question 39

what family is rhipicephalus sanguineus from?

Answer 39

ixodidae

Question 40

what can rhipicephalus sanguineus cause in an animal?

Answer 40

anemia | tick paralysis

Question 41

what causes tick paralysis

Answer 41

neurotoxins

Question 42

what can rhipicephalus sanguineus transmit?

Answer 42

babesia ehrlichia (lyme disease)

Question 43

what is the causative organism of lyme disease?

Answer 43

Borrelia burgdorferi

Question 44

what tick family transmits lyme disease

Answer 44

Ixodes spp.

Question 45

what is the causeative organism for rocky mountain spotted fever?

Answer 45

Rickettsia rickettsii

Question 46

which ticks transmit Rickettsia rickettsii through bite? (2)

Answer 46

1. Dermacentor variabilis | 2. Dermacentor andersoni

Question 47

which tick is a concern for transmission in eastern US?

Answer 47

Dermacentor variabilis

Question 48

which tick is a concern for transmission in western US?

Answer 48

Dermacentor andersoni

Question 49

what is the genus and species name for the “Rabbit bot fly” and “Rodent botfly”

Answer 49

Cuterebra spp.

Question 50

what is the genus and species for the bot fly?

Answer 50

gastrophilus sp.

Question 51

where does gastrophilus sp. lay their eggs?

Answer 51

hair shaft of legs and face

Question 52

what is the genus and species for the Horn fly?

Answer 52

Siphona spp.

Question 53

which fly species feed on tears, mucus, saliva, lymph

Answer 53

Siphona spp.

Question 54

what fly species feed with their head down?

Answer 54

Siphona spp.

Question 55

what is the genus and species of the horse fly?

Answer 55

Tabanus spp.

Question 56

which fly is a painful biter?

Answer 56

tabanus spp.

Question 57

why is the tabanus a painful biter?

Answer 57

Has scissor-like mouth parts that lacerate the skin

Question 58

which fly species has only female feed on blood?

Answer 58

tabanus spp.

Question 59

what are the common nameds for Hypoderma lineatum? (3)

Answer 59

“Cattle bot fly” “Cattle grub” “Warble fly”

Question 60

which fly species travels through the esophagus and spinal canal?

Answer 60

hypoderma lineatum

Question 61

which fly species looks like a honey bee?

Answer 61

hypoderma lineatum

Question 62

which fly species should you avoid treating for in the late fall?

Answer 62

hypoderma lineatum

Question 63

what is myiasis (strike)?

Answer 63

presence of fly larva in flesh

Question 64

what is some common names for blow fly? (2)

Answer 64

“Sheep bottle fly” | “Sheep blowfly

Question 65

which fly species causes myiasis (strike)?

Answer 65

blow fly