Helminthology Flashcards
(224 cards)
A four-year-old mixed breed dog housed in a small, dirt-floored pen presents with a history of weight loss, diarrhea, and tenesmus. The faeces is soft and contains bright red blood. What parasite is most likely to cause the symptoms described?
• Dipylidium caninum
• Toxocara canis
• Trichuris vulpis
• Ancylostoma caninum
Ancylostoma caninum
Dictyocaulus arnfieldi can infect
• Sheep
• Cattle
• Horse
• Deer
Horse
What is the shortest prepatent time of Strongylus vulgaris?
• 360 days
• 270 days
• 180 days
• 90 day
180 days
Galactogen infection with roundworms is related to this type of PE-2
• Ascaridioid
• Toxocaroid
• Ascaroid
• Toxocaridiod
Toxocaridiod
How a pig can be infected with the thorny-headed worm?
• Ingestion of an infected intermediate host containing acanthor
• Ingestion of L3 in larvated eggs from the environment
• Ingestion of free L3 from the environment
• Ingestion of an infected intermediate host containing cystacanth
Ingestion of an infected intermediate host containing cystacanth
Which species cannot cause the infection of a 9 month old horse if you can find strongyle type eggs in the faeces?
• Small strongyles
• s. edentatus
• s. vulgaris
• s. equinus
Small strongyles
bunostomum spp. belong to…
• ascarididae
• bunostomidae
• ancylostomatidae
• strongylidae
ancylostomatidae
how can you diagnose heartworm infection in a dog?
• Cultivation of microfilariae
• Detection of microfilariae with Knott method
• Detection of antigens and Knott method
• Detection of antibodies and Knott method
Detection of microfilaria with Knott method (serology : detection of antigen)
What is acanthor?
• L1
• L2
• L3
• Egg
L1
A mixed breed dog that is housed outdoors on soil presents with lesions on its sternum and ventral abdomen. The areas are erythematous. The parasite responsible for these lesions in most likely:
• Aelurostrongylus abstrusus
• Ancylostoma caninum
• Bunostomum phlebotomum
• Ancylostoma tubaeforme
Ancylostoma caninum
The larvae of this worm species can cause the rupture of aorta
• Dirofilaria immitis
• Habronema muscae
• Trichinella britovi
• Spirocerca lupi
Spirocerca lupi
Melarsomine is used to kill
• Dirofilaria repens adults
• Dirofilaria immitis adults and microfilariae
• Dirofilaria immitis adults
• Dirofilaria immitis microfilariae
Dirofilaria immitis adults
What is the hosr species of Strongyloides westeri?
• Cat
• Pig
• Horse
• Dog
Horse
Which species develops without intermediate host?
• Eucoleus aerophilus
• Angiostrongylus vasorum
• Capillaria plica
• Parafilaria bovis
Eucoleus aerophilus
Definitive hosts of Thelazia callipaeda are …
• Birds
• Dogs
• Ruminants
• Horses
Dogs
Typhlitis verrucose verminosa can occur in…
• Anoplocephalosis
• Heterakiosis
• Strongylidosis
• Ascaridiosi
Heterakiosis
How many months after the infection with roundworms can found eggs in the faeces of foals?
• 6 months
• 2 months
• 3-4 months
• 1 month
2 months
The infective stage of Onchocerca species develops in
• Blackflies or biting midges
• Blackflies
• Mosquitoes
• Sandflies
Blackflies or biting midges
Which is true for stringylus edentatus?
• The 4th moult happens in the subserosa of the parietal peritoneum causing haemorrhagic
• It is not pathogenic
• This species has the shortest life cycle • Migration through the liver and pancreas are part of the life cycle
The 4th moult happens in the subserosa of the parietal peritoneum causing haemorrhagic
Chronic hepatitis interstitialis parasitaria multiplex can occur in
• Horse • Poultry • Pig • Dog
Pig
Which is the large-mouthed bowel worm?
• Oesophagostomum dentatum
• Chabertia ovina
• Trichuris trichiura
• Bunostomum phlebotomum
Chambertin ovina
Dictyocaulus arenfieldi appears as…. In fresh faeces
• Egg with zygote
• Morulated egg
• Larva
• Larvated egg
Larvated egg
Predilection sites of Trichinella larvae in pigs
• Tongue
• Muscles of legs
• Muscles of arms
• Pectoral muscles
Tongue
The endectocides are effective against …
• Monezia spp.
• Trypanosomes
• Hookworms
• Rumen flukes
Hookworms