15. Parasitic Diseases of Guinea Pigs and Hamsters

Question 1

C/S of Eimeria caviae in GP

Answer 1

Diarrhea in weanlings (adults usually asyptomatic)
Lethargy, anorexia
Mortality rates low

Question 2

Dx of Eimeria caviae in GP

Answer 2

Fecal flotation

Question 3

E. cuniculi C/S in guinea pigs

Answer 3

None in GP

Question 4

Histo lesions of E. cuniculi in GP

Answer 4

Granulomas/necrosis of brain and kidney

Question 5

Toxoplasma gondii GP C/S

Answer 5

Rare in GPs. Infections are subclinical.
Vulvar bleeding and abortion
Encephalitis

Question 6

Toxo transmission in GP

Answer 6

Ingestion of material contaminated with oocysts from Felidae

Question 7

Cryptosporidium wrairi in GP C/S

Answer 7

Most common in young animals. Subclinical infection common

Weight loss, diarrhea, death

Question 8

Tx of Crypto wrairi in GP

Answer 8

None

Control by strict sanitation

Question 9

Balantidium caviae C/S in GP

Answer 9

Nonpathogenic

Question 10

B. caviae pathogenesis in Gp

Answer 10

Inhabits cecum

Trophozoites may be opportunistic pathogens in bacterial enteropathies.

Question 11

Klossiella cobayae in GP - has tropism for which tissue?

Answer 11

Kidneys

Question 12

Klossiella cobayae transmission in GP

Answer 12

Contact with urine

Question 13

Giardia duodenalis in GP C/S

Answer 13

Rarely causes C/S

Question 14

Pathogenesis of Giardia duodenalis in GP

Answer 14

Mild inflammatory lesions of SI

Question 15

Tx of Giardia duodenalis in GP

Answer 15

Metronidazole and fenbendazole

Question 16

What kind of worm is Parasidoptera uncinata (GP)?

Answer 16

Nematode, only common helminth in GP

Question 17

Where does Parasidoptera infect?

Answer 17

Cecal worm

Question 18

Parasidoptera life cycle length

Answer 18

65 days

Question 19

C/S of Parasidoptera

Answer 19

Usually asymptomatic, but c/s can occur with heavy infestations
Weight loss, debilitation, diarrhea

Question 20

Parasidoptera tx

Answer 20

Piperazine and ivermectin

Question 21

G pigs are what kind of host for Baylisascaris?

Answer 21

Paratenic host

Question 22

GP trematode sp (2)

Answer 22

Fasciola hepatica

Fasciola gigantica

Question 23

C/S of GP trematodes

Answer 23

Anorexia, debilitation, death

Question 24

How are GP trematodes transmitted?

Answer 24

GP exposed to cercariae encysted on vegetation

Question 25

GP trematodes live where?

Answer 25

Liver

Question 26

Two most common GP mites

Answer 26

Chirodiscoides caviae | Trixacarus caviae

Question 27

What kind of mite is Chirodiscoides caviae?

Answer 27

Nonburrowing fur mite

Question 28

Chirodiscoides caviae C/S. Where on the body are the heaviest infestations?

Answer 28

Usually asymptomatic | Heaviest infestations on posterior trunk

Question 29

Tx for GP mites

Answer 29

Ivermectin

Question 30

What kind of mite is Trixacarus caviae?

Answer 30

Burrowing sarcoptid mite

Question 31

C/S of Trixacarus caviae

Answer 31

Intense pruritus, dermatitis, alopecia, crusting, excoriation

Question 32

Distribution of Trixacarus caviae lesions

Answer 32

Shoulders

Question 33

Is Trixacarus cavaie zoonotic?

Answer 33

Can transiently infect human

Question 34

GP lice are in what suborder?

Answer 34

Mallophaga

Question 35

3 species of GP lice

Answer 35

``` Gliricola porcelli (slender louse) Gyropus ovalis (oval louse) Trimenopon hispidum ```

Question 36

Most common GP louse

Answer 36

Gliricola porcelli

Question 37

Distribution of GP lice

Answer 37

Around ears and neck, on hair shafts

Question 38

Tx of GP lice

Answer 38

Ivermectin or pyrethrin

Question 39

Two spp of fleas in GPs

Answer 39

``` Ctenociphalides felis (cat flea) Nosopsyllus fasciatus (northern rat flea) ```

Question 40

5 protozoa in hamsters

Answer 40

1. Spironucleus muris 2. Cryptosporidia 3. E. cuniculi 4. Tritrichomonas muris 5. Giardia muris

Question 41

Giardia C/S in hamsters

Answer 41

Emaciation and diarrhea in aged hamsters with concurrent amyloidosis

Question 42

5 sp of hamster pinworms

Answer 42

``` Syphacia mesocriceti (Hamster pinworm) Syphacia obvelata (mouse pinworm) Syphacia muris (rat pinworm) Syphacia cricteri Dentostomella translucida ```

Question 43

C/S of hamster pinworm

Answer 43

None

Question 44

Tx of hamster pinworm

Answer 44

Ivermectin, benzimidazoles

Question 45

Where does Tricosomoides nasalis inhabit in the hamster?

Answer 45

Nasal mucosa

Question 46

Hymenolepis (rodentolepis) nana is what kind of worm?

Answer 46

Cestode

Question 47

Lifecycle of Rodentolepis nana

Answer 47

Direct or indirect

Question 48

C/S of Rodentolepis nana

Answer 48

Usually none. Obstruction possible.

Question 49

Tx of Rodentolepis nana

Answer 49

Niclosamide

Question 50

6 spp of hamster mites

Answer 50

1. Demodex criceti 2. Demodex aurati 3. Demodex cricetuli 4. Notoedres 5. Ornithonyssus bacoti 6. Spleorodens clethrionomys

Question 51

Demodex C/S in hamsters

Answer 51

Often asymptomatic. Dry, scaly skin reported

Question 52

Difference in distribution between D. criceti and D. aurati

Answer 52

D. criceti found in epidermal pits. D. aurati found in follicles and sebaceous glands.

Question 53

Tx of hamster demodicosis

Answer 53

Selenium sulfide shampoo, amitraz

Question 54

D. cricetuli infects which hamsters?

Answer 54

Armenian

Question 55

D. sinocricetuli infects which hamsters?

Answer 55

Chinese striped (Cricetulus griseus) and striped (Cricetulus barbarensis) hamsters