Stomach Worms Of Dogs And Cats Flashcards
What are the stomach worms of dogs and cats?
Ollulanus tricuspis
Physaloptera rara
Physaloptera praeputialis
Spirocera lupi
Gnathostoma spinigerum
What are the hosts of Ollulanus tricuspis
Cats
Wild felids
Foxes
May occur in pigs and dogs
Characteristics of O. Tricuspis
Small , less than 1 mm, not easily seen
Males: bursa @ posterior end
Females: tricuspid @ tip of the tail
What is the prepatent period of O. Tricuspis?
1 month
Infective stage of O. Tricuspis
Host becomes infected by the ingestion of vomitus containing infective L3 larvae
Lifecycle of O. Tricuspis
Direct
L3 larvae develop within the uterus of the adult female worm
Larvae expelled into environment through vomitus or complete lifecycle within the host (autoinfection)
What are the clinical signs of O. Tricuspis
Increased production of gastric mucous
Vomiting
Anorexia
Weight loss
How do you diagnose O. Tricuspis
Examination of vomitus
Baerman technique
Direct smear
Auto- infection
How do you treat O. Tricuspis
Fenbendazole
Characteristics of Physaloptera species
3-6 cm, easily seen
Prepuce- like cuticular collar @ the anterior end (male and female)
Caudal alae @ posterior end (male)
What is the prepatent period of Physaloptera species?
2-3 months
What are the hosts of Physaloptera species
Dogs and cats
What are the intermediate hosts of Physaloptera species?
Cockroaches, coprophagous beetles (dung beetle) or paratenic host
Infective stage of Physaloptera species
Ingestion of L3 in intermediate host
Why are the clinical signs of Physaloptera species?
Gastritis
Ulcers in stomach
Vomiting
How are Physaloptera species treated?
Pyramtel pamoate
Fendendazole
How do you diagnose Physaloptera species?
Larvated eggs shed in feces
Fecal sedimentation most effective
Eggs of Physaloptera species
Larvated eggs shed in feces
Eggs are oval, thick shelled and transparent
Where are spirocerca lupi located?
Esophagus and stomach
Immature may be found in aorta
Characteristics of spirocerca lupi
Seen as nodules on esophagus
Red when alive
5-8 cm
What is the prepatent period of spirocerca lupi?
5-6 months
What are the hosts of spirocerca lupi?
Dogs and wild canids
T/F: spirocerca lupi have a direct life cycle
FALSE
What are the intermediate hosts if spirocerca lupi ?
Corophagous beetles
Chickens, mice, lizards- paratenic hosts
What is the infective stage of spirocerca lupi?
Ingestion of L3 larvae in intermediate host
Clinical signs of spirocerca lupi
Dysphagia and vomiting
Esophageal nodules
Fibrosarcoma/ osteosarcoma
Aortic rupture
Discospindylitis (T5-T10 vertebrae)
Hypertrophic pulmonary osteoarthophathy
How do you diagnose spirocerca lupi?
Fecal sedimentation
Small, larvated paperclip-like egg
What order are spirocerca lupi and Physaloptera found in?
Spirocerca
How do you treat spirocerca lupi?
Surgery to remove nodules
Pyrantel pamoate
Ivermectin
