15. Parasitic Diseases of Guinea Pigs and Hamsters Flashcards
C/S of Eimeria caviae in GP
Diarrhea in weanlings (adults usually asyptomatic)
Lethargy, anorexia
Mortality rates low
Dx of Eimeria caviae in GP
Fecal flotation
E. cuniculi C/S in guinea pigs
None in GP
Histo lesions of E. cuniculi in GP
Granulomas/necrosis of brain and kidney
Toxoplasma gondii GP C/S
Rare in GPs. Infections are subclinical.
Vulvar bleeding and abortion
Encephalitis
Toxo transmission in GP
Ingestion of material contaminated with oocysts from Felidae
Cryptosporidium wrairi in GP C/S
Most common in young animals. Subclinical infection common
Weight loss, diarrhea, death
Tx of Crypto wrairi in GP
None
Control by strict sanitation
Balantidium caviae C/S in GP
Nonpathogenic
B. caviae pathogenesis in Gp
Inhabits cecum
Trophozoites may be opportunistic pathogens in bacterial enteropathies.
Klossiella cobayae in GP - has tropism for which tissue?
Kidneys
Klossiella cobayae transmission in GP
Contact with urine
Giardia duodenalis in GP C/S
Rarely causes C/S
Pathogenesis of Giardia duodenalis in GP
Mild inflammatory lesions of SI
Tx of Giardia duodenalis in GP
Metronidazole and fenbendazole
What kind of worm is Parasidoptera uncinata (GP)?
Nematode, only common helminth in GP
Where does Parasidoptera infect?
Cecal worm
Parasidoptera life cycle length
65 days
C/S of Parasidoptera
Usually asymptomatic, but c/s can occur with heavy infestations
Weight loss, debilitation, diarrhea
Parasidoptera tx
Piperazine and ivermectin
G pigs are what kind of host for Baylisascaris?
Paratenic host
GP trematode sp (2)
Fasciola hepatica
Fasciola gigantica
C/S of GP trematodes
Anorexia, debilitation, death
How are GP trematodes transmitted?
GP exposed to cercariae encysted on vegetation
GP trematodes live where?
Liver
Two most common GP mites
Chirodiscoides caviae
Trixacarus caviae
What kind of mite is Chirodiscoides caviae?
Nonburrowing fur mite
Chirodiscoides caviae C/S. Where on the body are the heaviest infestations?
Usually asymptomatic
Heaviest infestations on posterior trunk
Tx for GP mites
Ivermectin
What kind of mite is Trixacarus caviae?
Burrowing sarcoptid mite
C/S of Trixacarus caviae
Intense pruritus, dermatitis, alopecia, crusting, excoriation
Distribution of Trixacarus caviae lesions
Shoulders
Is Trixacarus cavaie zoonotic?
Can transiently infect human
GP lice are in what suborder?
Mallophaga
3 species of GP lice
Gliricola porcelli (slender louse) Gyropus ovalis (oval louse) Trimenopon hispidum
Most common GP louse
Gliricola porcelli
Distribution of GP lice
Around ears and neck, on hair shafts
Tx of GP lice
Ivermectin or pyrethrin
Two spp of fleas in GPs
Ctenociphalides felis (cat flea) Nosopsyllus fasciatus (northern rat flea)
5 protozoa in hamsters
- Spironucleus muris
- Cryptosporidia
- E. cuniculi
- Tritrichomonas muris
- Giardia muris
Giardia C/S in hamsters
Emaciation and diarrhea in aged hamsters with concurrent amyloidosis
5 sp of hamster pinworms
Syphacia mesocriceti (Hamster pinworm) Syphacia obvelata (mouse pinworm) Syphacia muris (rat pinworm) Syphacia cricteri Dentostomella translucida
C/S of hamster pinworm
None
Tx of hamster pinworm
Ivermectin, benzimidazoles
Where does Tricosomoides nasalis inhabit in the hamster?
Nasal mucosa
Hymenolepis (rodentolepis) nana is what kind of worm?
Cestode
Lifecycle of Rodentolepis nana
Direct or indirect
C/S of Rodentolepis nana
Usually none. Obstruction possible.
Tx of Rodentolepis nana
Niclosamide
6 spp of hamster mites
- Demodex criceti
- Demodex aurati
- Demodex cricetuli
- Notoedres
- Ornithonyssus bacoti
- Spleorodens clethrionomys
Demodex C/S in hamsters
Often asymptomatic. Dry, scaly skin reported
Difference in distribution between D. criceti and D. aurati
D. criceti found in epidermal pits. D. aurati found in follicles and sebaceous glands.
Tx of hamster demodicosis
Selenium sulfide shampoo, amitraz
D. cricetuli infects which hamsters?
Armenian
D. sinocricetuli infects which hamsters?
Chinese striped (Cricetulus griseus) and striped (Cricetulus barbarensis) hamsters
