parasitic disease

Question 1

intestinal coccidiosis species mice GP rabbit

Answer 1

mice- E. falciformis, vermiformis, papillate
GP- caviae
rabbit- intestinalis, flavescens

Question 2

coccidiosis

Answer 2

fecal oral transmission
C/S- subclinical, runting, d+
path mice- typhlocolitis, enteritis
GP- colonic hyperplasia
rabbits- white foci in intestine
dx- fecal float, PCR, histopath
tx- sulfas, rederive
check husbandry

Question 3

hepatic coccidiosis

Answer 3

weanling rabbits- fecal oral transmission
C/S- subclinical, potbellied, thin, d+
path- big liver, icterus, thickened GB, oocytes in bile ducts
dx- high BIL, fecal float, histopath
tx- sulfaquinoxaline in feed, check husbandry

Question 4

velvet disease transmission

Answer 4

piscinoodinium sp
trophont on fish-> tomont (repro, environment)-> dinospores (infective in environment) ppp=10-14d

Question 5

velvet disease C/S, dx, tx

Answer 5

C/S- excess mucous, dark skin, surface swimming, laboured breathing, yellow sheen
dx- wet mount gills/fin. gill degeneration on histo
tx- saltwater immersion, increase temp (33-34), screen new fish, disinfect tank

Question 6

white spot disease

Answer 6

icthyopthirius multifilis ppp 3-6d
C/S- raised white nodules, excessive mucous
dx- wet mount, see horseshoe nucleus, cilia
tx- salt bath, formalin, increase temp, UV on water, screen new fish

Question 7

dwarf tapeworm

Answer 7

hymenolepsis nana
mice rats hamsters humans. direct or indirect (beetles, moths) ppp 20-30d
fecal oral transmission
C/S- weight loss
path- thread like worms
dx- fecal float for eggs, check contents
tx- praziquantel, albendazole, mebendazole, thiabendazole, sanitation

Question 8

H diminuta (rat tapeworm)

Answer 8

mice, rats, hamsters. indirect lifecycle
ingestion of infective stage
adults larger than H nana, eggs have oncosphere w 3 pairs of hooks but no filament

Question 9

rana microstoma

Answer 9

mice rats hamsters
indirect life cycle (insects), lives in bile ducts

Question 10

taenia taeniaformis

Answer 10

mouse rat hamster cats
fecal oral transmission
larval form cysticercus fasciolaris -> liver

Question 11

pinworms species mice rat hamster GP rabbit

Answer 11

mice- syphacia obvelata, auspicularis tetraptera
rat- syphacia muris
hamsters- C. cricetid, peromysci, stroma, tetraptera
GP- paraspidodera uncinate
rabbit- passalurus ambiguus

Question 12

pinworm lifecycle

Answer 12

egg (infective stage)-> ingested-> adults (cecum and colon)-> female in lg intestine

Question 13

pinworms C/s, path, dx tx

Answer 13

C/S- subclinical-> d+ prolapse, intussusception
path- no gross lesions, worms in lg intestine
dx- adults in cecum/colon, cellophane tape test, fecal float, PCR
tx- fenben in diet, ivermectin in water, cull, sanitation

Question 14

baylisascaris procyonis

Answer 14

GP, rabbits
C/S- torticollis, ataxia, circling, recumbency
path- white nodules in heart/liver, lesions in grey/white matter
tx- euth, decontamination
ZOONOTIC

Question 15

intestinal capillariasis (pseudocapillaria tormentosa)

Answer 15

fish- direct and indirect (earthworms)
C/S- emaciation, dark colour intestinal neoplasms
dx- adults in intestines oval shaped eggs w bipolar plugs
tx- fenben, emamectin, cull, check husbandry practices

Question 16

acariasis

Answer 16

mice/rats, direct life cycle
C/S- itchy skin, hair loss, ulceration
path- scaly skin, abrasions, ulceration, hyperkeratosis
dx- visual, skin scraping, PCR
tx- ivermectin, rederivation, check for wild rodents

Question 17

mite species

Answer 17

myobia musculi- mouse mite, non burrowing. single tarsal claw, enlongated body

radfordia affinis- non burrowing. unequal terminal claws

mycoptes musclinus- most common in mice (inguinal area). oval body, 3/4th legs w suckers

radfordia ensifera- rats. 2 tarsal claws are equal

Question 18

guinea pig mites

Answer 18

trixacarus caviae- burrowing mite, neck/shoulders
C/S- itchy, keratosis, alopecia
path- epidermal hyperplasia, adults and eggs in stratum corneum. affect humans

chirodiscoides caviae- posterior trunk-> subclinical, itchy skin, alopecia

tx- ivermection

Question 19

rabbit mites

Answer 19

psorptes cuniculi- ear mite
non burrowing, crusty ears

sarcoptes- burrowing mite. hair loss, crusst, secondary infection, hyperkeratosis

tx- selamectin, ivermectin

cheyletiella parasitovorax- scaliness, not itchy, crusting

tx- selamectin, ivermectin
zoonotic

Question 20

water molds

Answer 20

seen in immunocompromised fish-> white filaments to cottony masses
dx- wet mount
tx- salt immersion, husbandry, cull

Question 21

encephalitozoon cuniculi

Answer 21

mice, rats, GP, rabbits
obligate intracellular microsporidian

transmission- direct contact (urine)
C/S- subclinical, neuro signs, uveitis, cataracts
path- white lesions in kidneys, pseudocysts w organisms
dx- histopath, serology, PCR
tx- cull infected, fenben