Parasitology Flashcards
1
Q
What is the name of this canine parasite?
A
Trichodectes canis (biting louse, may serve as vector for Dipylidium caninim tapeworm)
2
Q
What is the name of this feline parasite?
A
Notoedres cati
3
Q
What is the name of this canine parasite?
A
Linognathus setosus (sucking louse; first pair of tarsal claws are smaller than the second and third)
4
Q
What is the name of this canine parasite?
A
Ctenocephalides felis
5
Q
What canine intestinal parasite indicates the presence of fleas?
A
Dipylidium caninum
6
Q
What canine intestinal parasite can be fatal to humans?
A
Echinococcus granulosus (tapeworm, can be fatal if in the alveoli)
7
Q
What is the name of this canine/feline parasite?
A
Cuterebra
8
Q
What is the name of this canine parasite?
A
Sarcoptes scabiei (long, unjointed pedicles)
9
Q
What is the name of this canine parasite?
A
Demodex canis
10
Q
What is the name of this feline parasite?
A
Otodectes cynotis
11
Q
What is the name of this feline parasite?
A
Cheyletiella blakei (no strong host specificity, non-burrowing, highly contagious, survives off host longer than any other mange mite)
12
Q
What is the name of this canine parasite?
A
Rhipicephalus sanguineus (brown dog tick)
13
Q
What diseases can Rhipicephalus transmit?
A
Babesia canis, Ehrlichia canis, Anaplasma platys
14
Q
What canine nematode causes “creeping eruptions” in humans?
A
Ancylostoma caninum (cutaneous larval migrans)
15
Q
Which 2 canine nematodes can cause parasitic pododermatitis in dogs?
A
Ancylostoma caninum
Uncinaria stenocephala
(hookworms)
16
Q
What is the name of this canine nasal parasite?
A
Pneumonyssoides caninum
17
Q
What is the name of this parasite found in cats and dogs?
A
Chiggers (only 3 pairs of legs)
18
Q
Which rodent and bird mite is occasionally found on cats and dogs?
A
Ornithonyssus spp
19
Q
Which feline nematode causes parasitic pododermatitis in cats & cutaneous larva migrans in humans?
A
Ancylostoma tubaeforme
20
Q
What is the name of this bovine parasite?
A
Damalinia (Bovicola) bovis
21
Q
Which bovine nematode can cause parasitic dermatitis of the distal extremities in cattle?
A
Bunostomum phlebotomum (hookworm)
22
Q
Which bovine nematode can cause parasitic dermatitis of the ventrum in cattle? And what is its vector?
A
Stephanofilaria stilesi (brisket worm), vector: horn flies (Haematobia irritans)
23
Q
Which bovine nematode can cause nodular dermatitis in cattle?
A
Onchocerca spp (insect vector)
24
Q
Which nematode causes ‘sore head’ in sheep?
A
Elaeophora schneideri (common parasite of mule deer in western US)
25
Which flies cause ‘grubs’ in cattle?
Hypoderma lineatum and Hypoderma bovis (Fly lays eggs on hair -> larvae migrate through flesh to -> esophagus (H. lineatum)/ spinal column (H. bovis) -> finally migrate to the skin on the back, grub (L3) up to 3cm long)
26
Which larvae cause screwworm in cattle and other livestock?
Cochliomyia hominivorax (New world Screw-worm)
--REPORTABLE in the US
--Usually occurs in southern Texas only
--Highly pathogenic to all livestock!
--Send larvae to state diagnostic laboratory
--Prevention: release of sterile male flies
27
What is the cause of ‘blowfly strike’ in sheep?
Larvae of Lucilia, Phormia, and Calliphora flies
--Fly lays eggs in wet/dirty/rotting wool -> larvae, up to 1.5 cm long
--Important factors: number of flies & susceptibility of host
--Prevention: hygiene
27
What is the name of this bovine parasite?
Haematopinus eurysternus
27
What is the name of this bovine parasite?
Damalinia (Bovicola) bovis
28
What is the name of this bovine parasite?
Linognathus vituli
(long-nosed sucking louse)
29
What is the name of this bovine parasite?
Psoroptes spp
--Cattle, sheep, goat
--REPORTABLE in cattle & sheep in some US states
--Very contagious
30
What is the name of this bovine parasite?
Sarcoptes scabiei
--Cattle, sheep
--REPORTABLE in cattle in some US states
--Very contagious
(Sarcoptes vs. Psoroptes: both have long pretarsi but Sarcoptes are not jointed)
31
What is the name of this bovine parasite?
Chorioptes
--Cattle, sheep, goat
--REPORTABLE in cattle in some US states
--Causes tail or foot mange
(these can be differentiated from Psoroptes in that Chorioptes pretarsi are short and non-jointed with a bell-shaped sucker)
32
What is the name of this ovine parasite?
Psorergates sp.
--Cattle, sheep
--Rare
--Smaller than most mites
--Infection spreads very slowly
33
What is the name of this ovine parasite?
Melophagus ovinus (‘sheep ked’)
34
What is the name of this llama parasite?
Damalinia (Bovicola) sp
35
What is the name of this camelid parasite?
Microthoracius sp. (Sucking louse)
36
What is the name of this llama parasite?
Sarcoptes scabiei
37
Which equine nematode places its eggs on the skin in the perianal area?
Oxyuris equi (pinworm)
38
Which equine nematode can cause ulcerated papules and nodules ?
Habronema ("summer sores")
39
What is the name of this porcine parasite?
Haematopinus suis ("hog louse")
--Irritation, anemia
--Transmits Eperythrozoon suis (Rickettsia) & swine pox
--All tarsal claws are of equal size
40
What is the name of this porcine parasite?
Sarcoptes scabiei
41
What is the cause of ‘swimmer’s itch’ in humans?
Trichobilharzia spp.
--Adult schistosomes are vein parasites of birds -> eggs are shed in feces and urine -> miracidium hatches upon water contact -> needs fresh water snail -> emerges from snail as cercaria-> this form can penetrate skin of humans, dogs, rabbits, raccoons-> migrates to lung, liver -> maturation-> adults go to mesenteric veins
42
What is the name of this bird parasite?
Knemidocoptes mutans
(scaly leg mite)
43
What is the name of this bird parasite?
Dermanyssus gallinae (feather mite)
44
What is the name of this bird parasite?
Argas persicus (soft tick)
45
What is the name of this hedgehog parasite?
Otodectes cynotis
46
What is the name of this hedgehog parasite?
Ornithonyssus sp.
47
What is the name of this rabbit parasite?
Cheyletiella parasitovorax
48
What is the name of this rabbit parasite?
Leporacarus gibbus (formerly Listrophorus gibbus)
(fur mite)
Treatments: Selamectin, Advantage, Ivermectin
49
What is the name of this mouse parasite?
Polyplax serrata (sucking louse)
50
What is the name of this mouse parasite?
Myocoptes musculinus (hair-clasping mite)
51
What is the name of this guinea pig parasite?
Gliricola porcelli (chewing louse)
52
What is the name of this guinea pig parasite?
Trixacarus caviae (sarcoptic mange mite)
53
What is the name of this ferret parasite?
Otodectes cynotis
54
What is the name of this guinea pig parasite?
Chirodiscoides caviae
55
What is the name of this bighorn sheep parasite?
Psoroptes ovis
56
What is the name of this human parasite?
Pediculus humanus (body or head louse)
57
What is the name of this human parasite?
Pthirus pubis
58
What is the common name and life cycle of Amblyomma americanum?
Lone star tick
59
What is the common name and life cycle of Dermacentor variabilis?
American Dog tick
60
What is the life cycle of Ixodes spp?
61
What is the name of this guinea pig parasite?
Chirodiscoides caviae (Guinea pig fur mite)
62
What is the name of this guinea pig parasite?
Gliricola porcelli
63
What is the name of this mouse parasite?
Myocoptes musculinus (hair-clasping mite)
64
What is the name of this mouse parasite?
Myobia musculi (hair-clasping mite)
65
What is the name of this feline parasite?
Otodectes cynotis
66
What is the name of this guinea pig parasite?
Trixacarus caviae
67
What is the name of this canine parasite?
Cheyletiella yasguri
68
What is the name of this rabbit parasite?
Leporacarus gibbus (non-burrowing rabbit fur mite)
69
What is the name of this feline parasite?
Lynxacarus radovskyi (hair-clasping mite)
70
What is the name of this parasite?
Chigger (Trombicula splendens)
71
What is the name of this nocturnal avian parasite?
Dermanyssus gallinae (red bird mite)
72
What is the name of this common avian parasite?
Ornithonyssus sylvarium (most common poultry mite, spends entire LC on host)
73
What is the name of this small animal parasite?
Otobius megnini (spinous ear tick)
74
What is the name of this poultry parasite?
Argas persicus (soft tick)
75
What is the name of this equine parasite?
Damalinia (Bovicola) equi
76
What is the name of this canine parasite?
Trichodectes canis
77
What is the name of this guinea pig parasite?
Gliricola porcelli
78
What is the name of this equine parasite?
Haematopinus asini
79
What is the name of this bovine parasite?
Haematopinus eurysternus
80
What is the name of this bovine parasite?
Linognathus vituli
81
What is the name of this bovine parasite?
Solenopotes capillatus (sucking louse)
82
What is the name of this porcine parasite?
Haematopinus suis
83
What is the name of this rat parasite?
Polyplax spinulosa (sucking louse)
84
What is the name of this canine parasite?
Linognathus setosus
85
What is the name of this bovine parasite?
Solenopotes capillatus (characterized by spiracles on the sides)
86
What is the name of this ovine parasite?
Melophagus ovinus (sheep ked)
87
What is the name of this human parasite?
Bed bug (Cimex lectularius)
88
What is the name of this human parasite?
Pthirus pubis
89
What is the name of this canine parasite?
Demodex injai
90
What is the name of this feline parasite?
Demodex cati
91
What is the name of this feline parasite?
Demodex gatoi
92
What is the name of this feline parasite?
Cheyletiella blakei
93
What is the name of this feline parasite?
Otodectes cynotis
94
What is the name of this feline parasite?
Lynxacarus radovskyi (hair-clasping mite)
95
What is the name of this feline parasite?
Felicola subrostratus (cat chewing louse)
96
What is the name of this feline parasite?
Cuterebra larva
97
What free-living nematode can cause parasitic folliculitis in dogs?
Pelodera strongyloides larvae
98
What equine parasite can affect 20-100% of a given population?
Onchocerca cervicalis
99
The adults of which equine parasite live in the nuchal ligament?
Onchocerca cervicalis
100
What is the vector for Onchocerca?
Culicoides
101
What nematode can cause parasitic panniculitis in dogs?
Dracunculus insignis, Dracunculus edinensis
(this is the worm on the vet med symbol)
102
Which parasite is the cause of equine ulcerative cutaneous granulomas?
Larvae of Habronema
103
What is the life cycle of Habronema?
Adults live in horse's stomach --> pass eggs and larvae in feces --> eggs/larvae ingested by fly maggots --> flies deposit larvae in horse wounds --> life cycle completed when larvae deposited near the mouth are swallowed
104
What is the name of this honey bee mite?
Varroa jacobsoni
105
What is the name of this gerbil parasite?
Demodex merioni
106
What is the name of this mouse parasite?
Myobia musculi (first pair of legs is modified for clasping so it can look like they only have 3 pairs of legs)
107
What is the name of this mouse parasite?
Radfordia affinis (hair-clasping mite, looks a lot like Myobia musculi)
108
What is the name of this mouse parasite?
Myocoptes musculinus
109
What is the name of this mouse parasite?
Psorergates simplex
110
What is the name of this mouse parasite?
Polyplax serrata (the only mouse louse)
111
What is the name of this rabbit parasite?
Haemaphysalis leporis-palustris (continental rabbit tick)
112
What is the name of this rabbit flea?
Echidnophaga gallinacea (sticktight flea, also found in poultry and dogs; no genal or pronatal combs; angular head)
113
Which mite can cause severe head and/or leg lesions in parakeets?
Knemidocoptes pilae (vs. K. mutans in chickens and turkeys)
114
What is the name of this nocturnal bird parasite?
Dermanyssus gallinae (red bird mite, hides in environment during the day)
115
What is the name of this ferret parasite?
Otodectes cynotis
116
What is the name of this guinea pig parasite?
Chirodiscoides caviae (guinea pig fur mite, hair-clasping mite)
117
What is the name of this mouse parasite?
Polyplax serrata (sucking mouse louse)
117
What is the name of this guinea pig parasite?
Gliricola porcelli (guinea pig louse)
118
What is the name of this rabbit parasite?
Psoroptes cuniculi
119
What is the name of this rabbit parasite?
Spilopsyllus cuniculi (sticktight flea, rabbit flea; vector for Myxomatosis)
120
What is the name of this rabbit parasite?
Listrophorus gibbus (non-burrowing fur mite; aka Leporacarus gibbus)
121
What is the name of this rat parasite?
Polyplax spinulosa (spined rat louse)
122
What is the name of this rat parasite?
Notoedres muris (ear mange mite -- looks like Sarcoptes but has a dorsal anus)
123
What is the name of this canine parasite?
Sarcoptes scabiei
124
What is the name of this canine parasite?
Cheyletiella yasguri
125
What is the name of this canine parasite?
Trichodectes canis (chewing louse)
126
What is the name of this canine parasite?
Linognathus setosus (sucking louse)
127
What is the name of this canine parasite seen on skin scrape from the ventrum?
Pelodera strongyloides (causes parasitic folliculitis)
128
Which novel nematode was isolated from the dermis of a group of dogs in the western US?
Acanthocheilonema sp. (pruritic nodules, plaques, and ulcers on head/neck/back/shoulders)
129
What is the name of this canine parasite?
Neotrombicula autumnalis (harvest mite/chigger)
130
What is the name of this canine (also: raccoon, mink, fox, skunk) parasite?
Dracunculus insignis (intermediate host: small crustaceans)
131
What is the name of this bovine parasite?
Chorioptes bovis
132
What is the name of this bovine parasite (jointed pedicles)?
Psoroptes bovis/ovis
133
What is the name of this bovine parasite?
Sarcoptes scabiei var. bovis
134
What is the name of this bovine parasite?
Demodex bovis
135
What bovine nematode can cause ventral parasitic dermatitis?
Stephanofilaria stilesi
136
What blood-sucking insect likes to cluster in the perineal and inguinal areas in bovines?
Hippobosca equina (Forest fly)
137
What is the cause of "cattle grubs"?
Larvae of Hypoderma bovis and H. lineatum
138
Which bovine parasite causes bleeding SQ nodules?
Parafilaria bovicola
139
Which bovine parasite causes parasitic folliculitis?
Pelodera strongyloides larvae
140
What is the name of this caprine parasite?
Chorioptes caprae
141
What is the name of this caprine parasite?
Psoroptes caprae
142
What is the name of this caprine parasite?
Demodex caprae
143
What is the name of this caprine parasite?
Damalinia caprae/crassiceps/limbata
144
What is the name of this caprine parasite?
Linognathus stenopsis/africanus (sucking louse)
145
Which parasite causes linear, vertically oriented ulcerations and crusts in goats?
Larvae of Parelaphostrongylus tenuis (lesions caused by self-trauma, intermediate host is slug/snail)
146
What is the name of this ovine parasite?
Chorioptes ovis
147
What is the name of this ovine parasite?
Psoroptes ovis (sometimes also P. cuniculi)
148
What is the name of this ovine parasite?
Damalinia ovis
149
What is the name of this ovine parasite?
Linognathus ovillis/pedalis (face louse/foot louse)
150
What is the name of this porcine parasite?
Sarcoptes scabiei var suis (most important porcine skin disease worldwide)
151
What is the name of this large animal parasite?
Psoroptes (Long, jointed pedicles, reportable in cows and sheep)
152
What is the name of this large animal parasite?
Chorioptes (short pedicles, reportable in sheep)
153
What is the difference between Otodectes/Chorioptes and Psoroptes mite pretarsi?
Otodectes/Chorioptes pretarsi has a short pedicle
Psoroptes pretarsi have a long jointed pedicle
154
What is the name of this large animal parasite?
Sarcoptes scabiei (long, unjointed pedicles, reportable in sheep and cows)
155
What is the name of this large animal parasite?
Psororgates simplex (reportable in sheep)
156
What is the name of these equine parasites?
Damalinia equi + Haematopinus asini
157
What is the name of this porcine parasite?
Haematopinus suis
158
What are the names of these bovine parasites?
Damalinia bovis
Haematopinus eurysternus
Linognathus vituli
159
What are the names of these ovine parasites?
Damalinia ovis
Linognathus pedalis
Linognathus africanus
160
What is the name of this goat and sheep parasite?
Melophagus ovinus (sheep ticks; ked)
161
What nematode causes an often ventrally-oriented dermatitis in cattle and goats?
Stephanofilaria stilesi (adults live in cyst-like structures at the base of hair follicles, microfilaria found in surrounding dermis and lymphatics)
162
What nematode causes parasitic folliculitis in cattle, sheep, and horses?
Pelodera strongyloides
163
What is the name of this equine parasite?
Psoroptes equi/natalensis/ovis/cuniculi (all can parasitize horses)
164
What is the name of this equine parasite?
Sarcoptes scabiei
165
What is the name of this equine parasite?
Chorioptes equi
166
What is the name of this equine parasite?
Demodex equi (D. caballi is longer)
167
What is the name of this equine parasite?
Chigger (Trombicula alfreddugesi, splendens, autumnalis, sarcina)
168
What is the name of this equine parasite?
Dermanyssus gallinae (poultry mite)
169
What is the name of this equine parasite?
Damalinia equi
170
What is the name of this equine parasite?
Haematopinus asini
171
What is the name of this insect?
Culicoides (vector for Onchocerca cervicalis)
172
What insects are mainly involved in seasonal equine midline dermatitis?
Culicoides spp. and Haematobia irritans
173
What is the cause of this equine dermatitis?
Bot flies (Gasterophilus)
174
What is the cause of equine "Warbles" or "grubs"?
Larvae of Hypoderma bovis and lineatum
175
What parasite is the cause of equine ulcerative cutaneous granulomas?
Larvae of Habronema muscae/majus/megastoma
176
Which equine parasite can affect 20-100% of a given population?
Onchocerca cervicalis (highest numbers during spring, lowest in winter)
177
Which equine nematode can cause anal pruritus?
Oxyuris equi (pin worm)
178
Which free-living nematode can cause parasitic folliculitis in horses?
Larvae of Pelodera strongyloides
179
In which equine nematode-caused papular to nodular dermatitis are only adult females, microfilariae, and eggs found in the dermis?
Halicephalobus deletrix
180
What is the name of this sheep parasite?
Melophagus ovinus (sheep ked)
181
What is the name of this cattle parasite?
Haematopinus eurysternus (sucking louse, all tarsal claws of equal size)
182
What is the name of this swine parasite?
Haematopinus suis (sucking louse)
183
What is the name of this horse parasite?
Haematopinus asini (sucking louse)
184
What is the name of this cattle parasite?
Linognathus vituli (sucking louse)
185
What is the name of this dog and fox parasite?
Linognathus setosus (sucking louse)
186
What is the name of this cattle parasite?
Solenopotes capillatus (sucking louse)
187
What is the name of this mouse parasite?
Polyplax serrata (sucking louse)
188
What is the name of this human parasite?
Pthirus pubis (crab louse="crabs"; sucking louse)
189
What is the name of this human parasite?
Pediculus humanus capitis (head louse; sucking louse)
190
What is the name of this goat parasite?
Damalinia crassipes (Chewing louse)
191
What is the name of this dog parasite?
Trichodectes canis (chewing louse; can serve as intermediate host for Dipylidium caninum)
192
What is the name of this cat parasite?
Felicola subrostratus (Chewing louse)
193
What is the name of this guinea pig parasite?
Gliricola porcelli (Chewing louse)
194
What is the name of this human parasite?
Pulex irritans (human flea)
195
Which flea may be found firmly attached in clusters on chickens' heads and eyelids of dogs and cats?
Echidnophaga gallinacea (poultry sticktight flea)
196
What is the name of this rat flea and which diseases may it transmit?
Xenopsylla, vector for Yersinia pestis and Rickettsia typhi
197
What is the name of this parasite?
Ctenocephalides
198
Which flea can cause these lesions?
Tunga penetrans
199
What is the name of this nocturnal and secretive bloodsucker of humans, chickens, bats, and nesting birds?
Cimex lectularius (bed bug)
200
What is the name of this tick?
Argas (soft tick, rarely found on host)
201
What is the name of this tick?
Ornithodoros (soft tick)
202
What is the name of this tick?
Amblyomma americanum (Lone star tick, can cause tick paralysis; vector for RMSF, Ehrlichia, Francisella tularensis)
203
What is the name of this dog tick?
Rhipicephalus sanguineus (Brown dog tick; vector for Ehrlichia, ANaplasma, Babesia)
204
What is the name of this tick?
Dermacentor variabilis (American dog tick; vector for RMSF, Francisella tularensis, Cytauxzoon felis, Babesia; can cause tick paralysis)
205
What is the name of this tick?
Ixodes scapularis (blacklegged tick; vector for Lyme disease, Babesia, can cause tick paralysis)
206
What is the name of this bird mite?
Ornithonyssus sylvarium
207
What is the name of this mite found in the ear canals of cattle?
Raillietia auris
208
Which groups of mites do these pretarsi belong to?
Sarcoptes (long, unjointed)
Psoroptes (long, jointed)
Otodectes (short)
Chorioptes (short)
209
What is the name of this parasite?
Sarcoptes scabiei
210
What is the name of this feline parasite?
Notoedres cati
211
What is the name of this chicken parasite?
Knemidocoptes mutans
212
What is the name of this parasite of sheep, cattle, and horses?
Psoroptes ovis
213
What is the name of this parasite of sheep and rabbits?
Psoroptes (P. ovis, P. cuniculi)
214
What is the name of this bovine parasite?
Chorioptes bovis
215
What is the name of this cat, dog, fox, and ferret parasite?
Otodectes cynotis
216
What is the name of this guinea pig parasite?
Chirodiscoides caviae
217
What is the name of this hair-clasping rodent parasite?
Myocoptes musculinus (male on L, female on R)
218
What is the name of this hair-clasping feline parasite?
Lynxacarus radovskyi
219
What are the names of these parasites?
Demodex canis, Demodex cati
220
What is the name of this hair-clasping rodent parasite?
Myobia musculi
221
What is the name of this parasite?
Chiggers, Trombiculidae
222
Which parasite can cause organ lesions like this one?
Hydatid cysts of Echinococcus granulosus and E. multilocularis
(cysts develop in intermediate hosts: humans, sheep, swine, cattle, horses
definite hosts are dog, wolf, fox, coyote, dingo)
223
What is the name of this rabbit parasite?
Leporacarus gibbus (hair-clasping mite)
224
What is the name of this rat parasite?
Polyplax spinulosa (sucking louse)
225
What is the name of this parasite found in cat and dog ears?
Otobius megnini (spinous ear tick; only larvae and nymphs parasitize ear canals)
226
What is the name of this nocturnal poultry parasite?
Dermanyssus gallinae
227
What is the name of this feline parasite?
Lynxacarus radovskyi (cat fur mite)
228
What are the names of these parasites?
Eutrombicula alfreddugesi
Walchia americana
Neotrombicula autumnalis
229
What is the name of this feline parasite?
Otodectes cynotis
230
What is the name of this parasite and which animals does it affect?
A=Cheyletiella yasguri (dog)
B=Cheyletiella blakei (cat)
C=Cheyletiella parasitovorax (rabbit)
231
What is the name of this canine parasite?
Cheyletiella yasguri
232
What is the name of this canine parasite?
Demodex canis (adult, larva, nymph, egg)
233
What are the names of these feline parasites?
A+B= Demodex cati
C+D= Demodex gatoi
234
What is the name of this canine parasite?
Sarcopes scabiei
235
What is the name of this feline parasite?
Notoedres cati
236
What is the name of this canine parasite?
Linognathus setosus (sucking louse)
237
What is the name of this feline parasite?
Felicola subrostratus (chewing louse)
238
What are the names of these canine parasites?
Trichodectes canis (chewing louse)
Heterodoxus spininger (chewing louse)
Linognathus setosus (sucking louse)
239
Which biting flies can cause these lesions on a dog?
Simuliidae spp. (Black flies)
240
What is the name of this insect?
Thaumetopoea spp (bristles contain thaumatopine --> mast cell degranulation)
241
What is the name of this guinea pig parasite?
Trixacarus caviae
242
What is the name of this guinea pig parasite?
Chirodiscoides caviae
243
What is the name of this guinea pig parasite?
Gliricola porcelli (Chewing louse)
244
What is the name of this guinea pig parasite?
Demodex caviae
245
What are the names of these mouse parasites?
Myobia musculi
Myocoptes musculinus
246
What is the name of this rabbit parasite?
Leporacarus gibbus (Listrophorus gibbus; fur mite)
247
What is the name of this hamster parasite?
Demodex aurati (D. criceti is shorter)
248
Which species of cat Demodex lives in the hair follicle in cats?
D. cati
249
Which species of cat Demodex lives in the stratum corneum?
D. gatoi
250
Which species of cat Demodex is short-bodied?
D. gatoi
251
What is the name of the Demodex mite in pigs?
D. phylloides
252
Which is the short-bodied Demodex in horses?
D. equi
253
Which is the long-bodied Demodex in horses?
D. caballi
254
On what part of the body would you typically find D. caballi in horses?
Eyelid and muzzle
255
What is the long-bodied Demodex mite in cows?
D. ghanensis
256
What is the short-bodied Demodex mite in cows?
D. bovis
257
What is the short-bodied Demodex mite in hamsters?
D. criceti
258
What is the long-bodied Demodex mite in hamsters?
D. aurati
259
What is the name of the Demodex mite in gerbils?
D. merioni
260
What species of flea has genal and pronotal combs and a rounded head?
Ctenocephalides canis
261
What species of flea has genal and pronotal combs and a flat head?
Ctenocephalides felis
262
What 3 species of flea have no genal or pronotal combs?
Echidnophaga gallinacea (sticktight flea)
Pulex irritans (human flea)
Xenopsylla ceopis (Oriental rat flea)
263
What is the name of the cattle stable fly?
Stomoxys calcitrans
264
What is the name of the horse fly?
Tabanus spp. (can transmit Anaplasmosis)
265
What is this bird parasite?
Menacanthus straminueus (avian body louse)
266
What is this poultry parasite?
Menopon gallinae
267
What is this parasite of pigeons?
Columbicola columbae (slender pigeon louse)
268
What is this parasite?
Pulex irritans (no genal or pronotal combs)
269
Describe the flea life cycle
270
What is the name of this bird parasite?
Goniocotes (chewing louse)
271
Do birds have sucking lice?
No
272
What is the name of this bird parasite?
Protalges sp. (feather mite)
273
What is the name of this deer parasite?
Linognathus africanus (sucking louse)
274
What is the name of this deer parasite?
Lipotena sp. (deer ked)
275
What is the name of this bear parasite?
Ursicoptes americanus (mange mite)
276
What is the name of these rodent parasites?
Larval ticks (Dermacentor sp.)
277
What is the name of this wildlife parasite?
Chigger (Trombicula sp.)
278
What is the name of this hedgehog parasite?
Achaeopsylla erinacei (hedgehog flea)
279
What nematode larvae can cause blistering dermatitis on the hands and feet of humans and monkeys?
Anatrichosoma cutaneum
280
What caprine parasite causes nodules on the dorsum?
Larvae of Przhevalskiana silenius (Hypoderma silenius, warbles)
281
What type of skin scrape should be done to diagnose D. gatoi?
Superficial
282
What type of skin scrape should be done to diagnose D. cati?
Deep
283
What type of skin scrape should be done to diagnose Notoedres?
Superficial
284
What type of Demodex can be particularly hard to find in cats?
D. gatoi
285
How can flea allergy dermatitis be effectively diagnosed?
Institution of 9-12 weeks of flea control
286
How long after feeding can fleas start to lay eggs?
48 hours
287
How many eggs per day do fleas lay on average?
27 eggs/day (can be as high as 50/day)
288
Once flea eggs fall off the host, how long does it take to hatch (assuming optimal conditions)?
1-6 days
289
How long do fleas spend in the pupal stage?
At least 13 days, usually about 3-5 weeks (can be as long as 140 days)
289
How long does it take flea larvae to form cocoons (assuming optimal conditions)
8 days
290
What 2 genera are stable flies part of?
Stomoxys
Haematobia
291
Where do mosquitoes and Culicoides breed?
Standing water
292
What is the most common Culicoides species affecting horses in North America?
C. obsoletus
293
True or false: house dust mites prefer low humidity
False - they prefer high humidity
294
What are the major allergens of Sarcoptes scabiei?
Tropomyosin (Sar s 10)
Paramyosin (Sar s 11)
295
What parasite may increase sensitization to Der f allergens in dogs?
Toxocara
296
What constituent of bee venom is lacking in wasp venom?
Melittin (causes mast cell degranulation)
297
Is Sarcoptes scabiei reportable in horses in the US?
Yes
298
What two fly species are responsible for equine ventral midline dermatitis?
Haematobia
Culicoides
299
What is the distribution pattern of chewing lice in horses?
Head
Mane
Base of tail
300
What is the distribution of sucking lice in horses?
Head
Neck
Fetlock
301
What fly species serve as vectors/intermediate hosts for Parafilaria?
Haematobia
Musca
302
What fly species serves as intermediate hosts for Onchocerciasis?
Simulium
Culicoides
303
What fly species serve as intermediate hosts for dermatobiasis?
Simulium
Stomoxys
304
What fly species serve as intermediate hosts for habronemiasis?
Musca
Stomoxys
305
Biopsy from this horse reveals multifocal areas of discrete coagulation necrosis with palisading granulomas. What is the likely cause?
Habronemiasis
306
What is the causative agent of rhabditic dermatitis in horses?
Pelodera strongyloides
307
What disease does Melophagus ovinus transmit?
Bluetongue virus (orbivirus)
308
Which genus yields the most economically-damaging form of cutaneous calliphorine myiasis in sheep?
Lucilia
309
A 3-year-old range Angus bull presents with alopecia, erythema, crusting, and lichenification along the ventral midline in mid-June. The bull is moderately pruritic and painful on testicular palpation. What is your top differential?
Stephanofilariasis
--common in summer in range beef cattle
--orchitis, mastitis, skin lesions
310
What causes trombiculiasis?
Chiggers
311
What time of year is Psoroptes seen most commonly?
Winter
312
True or false: This mite is NOT reportable in cattle
False- Psoroptes is reportable
313
What occurs to Hippobosca maculata and Hippobosca equina adults once they have infested cattle/horses?
The adult sheds its wings and burrows into the skin
314
What time of year is Hippobosca maculata and Hippobosca equina parasite burden highest?
Summer (louse flies)
315
True or false: The Chorioptes bovis life cycle is entirely on the host
True
316
Where are you most likely to note lesions associated with a Psoroptes bovis infestation in goats?
Ears
Face
Interdigital
Pastern
317
What is the sucking louse of goats?
Linognathus stenopsis
318
What genus of hypodermiasis (warbles) is most common in goats?
Przhevalskiana silenus
319
Which life cycle stage emerges from the central pore in hypodermiasis?
L3
320
How do goats become infected with Paralaphostrongylus tenuis?
Ingest snail/slug
321
What animal is the definitive host of Paralaphostrongylus tenuis?
White-tailed deer
322
Which organism is responsible for “gotch ear,” most commonly in cattle but also described in goats?
Amblyomma maculatum (Gulf Coast tick)
323
A 2 yo, MN, Labrador Retriever is presented with multiple, chronic, ulcerative, and pruritic nodules on his abdomen and limbs. Several nodules have central draining tracts. Exfoliative cytology from a draining tract reveals larvae with long tapered tails (photo) and predominately pyogranulomatous and eosinophilic inflammation. How did he acquire this parasite?
Swimming in contaminated water (Dracunculus insignis)
324
Which ectoparasite is known to hide in the nostrils of cats?
Cheyletiella blakei
325
How is D. injai diagnosed?
Deep skin scrape
326
A dog presents with severely pruritic, ventrally distributed papular dermatitis. No organisms are seen on cytology nor skin scrapings. Histopathology reveals perivascular to interstitial eosinophilic dermatitis with multifocal epidermal edema, exocytosis, degeneration, and necrosis. What is your diagnosis?
Sarcoptes scabiei ("epidermal nibbles")
327
What part of the body is typically affected by Spilopsyllus cuniculi in rabbits?
Pinnae and preauricular areas
(Rabbit flea)
328
What animals does Ornithonyssus prefer?
Birds
rodents
329
A young budgerigar presents to you with a scaly face and legs as well as a malformed beak. The owner reports that she just acquired the bird from a local bird sanctuary where he was housed with other birds. What is the treatment of choice for this bird?
Ivermectin (oral/topical/injectable)
--scaly face in budgie is pathognomic for Knemidocoptes
--need to treat all in-contact birds
330
An owner calls the clinic to report that the white cover she uses over her chicken coop at night had a bunch of tiny dark red/black dots on it this morning when she took it off for the day. She wants to know how to treat it- what do you recommend?
Any insecticidal dip/bath/spray (treat animals and environment!)
--Dermanyssus gallinae
--Organophosphates, ExZolt (fluralaner), Permethrins
331
What parasiticide is toxic to chelonians?
Ivermectin
332
What parasiticide is toxic to birds?
Imidacloprid
333
True or false: Trixacarus caviae can be ruled out if a guinea pig's cage mate is asymptomatic
False
334
What clinical sign do rats sometimes present with when affected by Notoedres muris that hamsters do not?
Nasal horns
335
In which species should you avoid fipronil?
Rabbits
Hedgehogs
336
How should Psoroptes cuniculi be treated in rabbits?
Ivermectin or selamectin
337
What is the most common tick to parasitize rabbits?
Haemaphysalis leporispalustris
338
What is the name of this fish parasite?
Gyrodactylus (salmon fluke)
--Tx: praziquantel
339
What is the cause of white spot disease in fish?
Ichthyophthirius multifiliis
340
What parasite causes atrophy of the tongue in marine fish?
Cymothoa exigua
