ollulanus tricuspus, physaloptera & spirocera lupi Flashcards
ollulanus tricuspis
feline stomach worm
small minute worms
ollulanus tricuspis biology
direct lifecycle
ovoviviparous
larvae develop into infective stage in stomach
transmission by vomiting infective larvae and ingestion by susceptible host
ovoviviparous
eggs develop and hatch larvae w/in female worm
ollulanus tricuspis clinical importance
associated w chronic gastritis in infected felines
induces vomiting minutes/hours after eating
autoinfection allows for accumulation of significant worm burdens
ollulanus tricuspis diagnosis
ID worms in vomitis
ollulanus tricuspis treatment/prevention
FBZ
identify, segregate, and treat infected animals
clean up vomit
physaloptera spp morphology
canine stomach worm
stout pinkish worms
superfically resemble acarids, but have 2 lips and circular ring around anterior
physaloptera spp biology
obligate indirect lifecycle
-crickets, cockroaches
-mice and frogs may serve as paratenic host
infection by ingestion of infected IH or paratenic host
pre-patent period 56-83 days
eggs passed in feces ingested and develop into infective stage
physaloptera spp clinical importance
occasional presentation in companion animal
immature worms in vomit of kittens and puppies
symptomatic animals w chronic gastritis, vomiting, dark feces
-anemia, weight loss, emaciation
physaloptera spp diagnosis
symptomatic animal worms identify by gastroscopy
asymptomatic animals by fecal examination
-thick shelled, larvated eggs
physaloptera spp treatment/ prevention
Cats: pyrantel, IVM
dogs: FBZ, pyrantel, IVm
all regimens are extra-label!!
prevent by curtailing ingestion of infected IH
spirocerca lupi morphology
canine esophageal worm
coiled pinkish worms
occur in fiberous nodules in esophagus, stomach, aorta
spirocerca lupi biology
obligate indirect lifecycle
-coprophagous beetles primary IH
-mice, frogs, lizards paratenic host
infection by ingestion of infected IH or paratenic host
pre-patent period 5-6 months
eggs passed in feces ingested by suitable IH to develop to infective stage
spirocerca lupi clinical signifigance
distribution in caribbean west indies, enzootic on St. Kitt’s
symptomatic animals w dysphagia, vomiting, esophageal neoplasia, bleeding lesions that may cause anemia
-aortic aneurysm and rupture seen on necropsy
spirocerca lupi diagnosis
symptomatic animals w nodules may be identified by endoscopy
fecal exam
-thick shelled, larvated eggs (resemble paper clip)
