Helminthology Flashcards
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
Where does the threadworm live in the host?
• In the colon
• In the stomach
• In the small intestine
• In the caecum
In the small intestine
Metastrongylus salmi lay….
• Egg with zygote
• Morulated egg
• Eggs with larva
• 1st stage larvae
1st stage larvae
This active ingredient is used for treating of milking animals
• Abamectin
• Doramectin
• Moxidectin
• Eprinomectin
Eprinomectin
Adult strongylus vulgaris worm has…
• 4 tooth-like projections in the mouth
• A buccal capsule
• 32 gut cells of the intestine
• A long tail
A buccal capsule
This species does not have extraintestinal migration
• Ascaris suum
• Ascaridia galli
• Strongylus vulgaris
• Amidostomum anseris
Ascaridia galli
Heterakis dispar can occur in…
• Chicken
• Duck
• Pheasant
• Pigeon
Duck
summer sore” can occur in
• Cattle
• Reindeer
• Horse
• Sheep
Horse
The infective stage of habronema megastoma is L1
• True • False
False
Cattle can be infected with protostrongylus rufescens
• True • False
False
The cats cannot be infected with Eucoleus aerophilus
• True • False
False
The chicken can be infected with Ascaridia galli with eating earthworms
• True • False
True
Flies are the intermediate hosts of Habronema spp.
• True • False
True
The L1 of Muellerius sp. is found in the cows manure
• True • False
False
Thelazia callipaeda can infect … (more than one answer may be right!)
• Human • Dog • Rabbit • Cat
All
F. hepatica antibodies can be detected from…. (more than one answer may be right!)
• Serum
• Milk
• Blood
• Faeces
Milk
How the dogs can be infected with Ancylostoma caninum ? (more than one answer may be right!)
• Percutan
• Intrauterine
• Per os
• Galactogenic
All of them
Unembrionated eggs can be detected from faeces. (more than one answer may be right!)
• Diphyllobothrium latum
• E. granulosus
• Spirometra spp.
• Monezia spp
Diphyllobothrium latum & Spirometra spp.
Where you can find cysticercus ovis? (more than one answer may be right!)
• Brain
• Skeletal muscle
• Kidney
• Heart
Skeletal muscles
Strongyloides wester can cause infection …. (more than one answer may be right!)
• Percutan
• Prenatal
• Galactogen
• Per os
Galactogen & Per os
Echinococcus granulosis belongs to …. (more than one answer may be right!)
• Cyclophyllidae
• Pseudophyllidae
• Cestoda
• Taeniidae
Cyclophyllidae, Cestoda & Taeniidae
Which species can occur in cats? (more than one answer may be right!)
• Diphyliobothridium latum
• Echinococcus multilocularis (rarely cats)
• Dipylidium caninum
• Taenia taeniaeformis
All of them
Which species can cause galactogenic infection for the hosts? (more than one answer may be right!)
• Strongyloides westeri
• Ancylostoma tubaeforme
• Filaroides milksi
• Toxocara vitulorum
S. Westerni, Ancylostoma tubaeformen & Toxocara vitulorum
It can occur in vertebrate intermediate host (more than one answer may be right!)
• Strobilocercus
• Plerocercoid
• Procercoid
• Cysticercus
All of them
Which species can infect humans? (more than one answer may be right!)
• Dicrocoelium dendriticum
• Eucoleus aerophilus
• Fasciola hepatica (least susceptible)
• Ancylostoma caninum
Dicrocoelium dendriticum & Fasciola hepatica
The infected paratenic hosts can infect the host with this species (more than one answer may be right!)
• Ascaridia galli
• Filaroides milksi
• Alaria alata
• Angiostrongylus vasorum
Alaria alata & Angiostrongylus vasorum
Which species develop(s) in earthworms? Which species can infect humans? (more than one answer may be right!)
• Metastrongylus apri
• Syngamus trachea
• Heterakis gallinarum
• Capillaria plica
Metastrongylus apri, Heterakis gallinarum, Capillaria plica
How the cats can be infected with T. cati? (more than one answer may be right!)
• Per os with eggs containing L3
• Intrauterine
• With infected paratenic host
• With milk
All of them
Prepatent period of Fasciola hepatica
• 6-8 months
• 8-10 weeks
• 3-5 weeks
• 5-6 months
8-10 weeks
Which is the odd one out?
• Procercoid
• Plerocercoid
• Cysticercoid
• Cercaria
Cercaria
The adults of this tapeworm species can occur in human
• Taenia hydatigena
• Echinococcus granulosus
• Echinococcus multilocularis
• Dipylidium caninum
Dipylidium caninum
This larval stage follows the miracidium
• Redia
• Cercaria
• Sporocyst
• Metacercaria
Sporocyst
The dog is the …. Of Echinococcus multilocularis
• Final and intermedia host
• Paratenic host
• Intermediate host
• Final host
Final host
This larval stage follows the redia stage
• Metacercaria
• Cercaria
• Mesocercaria
• Sporocyst
Cercaria
The infective stage of Alaria alata is
• Metacercaria
• Mesocercaria
• Metacercaria
• Cercaria
Metacercaria
The larval form of this species many worms can develop in the intestine of dogs
• Taemia solium
• Echinococcus granulosus
• Taenia crassiceps
• Taenia hydatigena
Echinococcus granulosus
The eggs always contain oncospheres (more than one answer may be right)
• Moniezia
• Taenia
• Anoplocephala
• Alaria
Moniezia, Tænia, Anoplocephala
The cat’s stomach worm can infect ….
• Felids and mustelids
• Felids and canids
• Felids, canids, pig
• Felids
Felids, canids, pig
What is the intermediate hosts of Spirocerca lupi?
• Dung beetle
• Flea
• Mosquito
• Earthworm
Dung beetle
Dictyocaulus arnfieldi can infect
• Horse
• Sheep
• Cattle
• Dee
Horse (& donkey)
Parthenogenetic females can occur in
• Strongyloides
• Toxocara
• Oesophagostomum
• Ancylostoma
Strongyloides
Which species can infect geese?
• Trichostrongylus axei
• Ollulanus tricuspis
• Amidostomum anseris
• Hyostrongylus rubidus
Amidostomum anseris
Where can you find Cooperia worms during the necropsy?
• In rumen
• In colon
• In small intestine
• In abomasum
In small intestine
What is the effective drug against Dirofilaria immitis adults?
• Praziquantel
• Melarsomine
• Permethrin
• Selamectin
Melarsomine
Which species can cause coagulopathies?
• Filaroides milksi
• Angiostrongylus vasorum
• Oslerus osleri
• Crenosoma vulpis
Angiostrongylus vasorum
What is the scientific name of the cat lungworm?
• Aelurostrongylus abstrusus
• Oslerus rostratus
• Oslerus osleri
• Troglostrongylus brevior
Aelurostrongylus abstrusus
How long is the prepatent period of T. canis if a dog became infected with eating infected paratenic host?
• 16 days
• 28 days
• 21 days
• 19 day
28 days
Ollulanus tricuspis can be found in …
• Lung
• Stomach
• Colon
• Duodenum
Stomach of cats or other félids
How can you detect small strongyle infection of horses?
• FEC with floatation
• Based on the morphology of L3
• Based on the morphology of L1
• With serology method
FEC
Where is the third moult of strongylus vulgaris?
• In the abdominal cavity
• In the lumen of large intestine • In the wall of large intestine
• In the lumen of arteria
In the wall of large intestine
How many forms of habronematidosis were mentioned?
• 1
• 2
• 3
• 4
3
This species can infect pigs
• Oesophagostomum radiatum • Oesophagostomum columbianum
• Oesophagostomum venulosum
• Oesophagostomum quadrispinulatum
Oesophagostomum quadrispinulatum
The infective stage of whipworms are ….
• Eggs containing L1
• Eggs
• Eggs containing L3
• L3
Eggs containing L1
Summer bleeding is caused by …
• Parafilaria
• Setaria
• Habronema
• Draschia
Parafilaria
Felids are not susceptible to …
• Oslerus rostratus
• Angiostrongylus vasorum
• Dictyocaulus cati
• Aelurostrongylus abstrusus
Angiostrongylus vasorum
The adult thorny-headed worms can be found in
• Caecum
• Small intestine
• Colon
• Bile ducts
Small intestine
What can be detected in the faecal samples of puppies infected with Strongyloides?
• Egg containing zygote
• Egg in morula stage
• L1
• Egg containing larva
Egg in morula stage or L1
Syngamus worms are most infective for chicken
• Younger than 2-3 weeks
• Older than 1 year
• Older than 2-3 months
• Younger than 2-3 months
Younger than 2-3 months
Which are called whipworms?
• Trichinella spp.
• Trichuris spp.
• Ascaris spp.
• Capillaria spp.
Trichuris spp.
Which of the following statement concerning the prepatent period for large strongyles is true?
• The period is highly variable because they may undergo arrested development in the wall of the intestine
• Strongylus equinus has the shortest period
• The period ranges from 6 to 11 months
• Strongyles become patent 40 to 60 days after infectio
The period ranges from 6 to 11 months
During the necropsy you can find Chabertia ovina in …
• Lung
• Colon
• Ileum
• Duodenum
Colon
This infection can be detected by floatation of eggs
• Crenosoma
• Protostrongylus
• Angiostrongylus
• Capillaria
Capillaria
Predilection sites of Trichinella larvae in pigs
• Tongue
• Muscles of legs
• Muscles of arms
• Pectoral muscle
Tongue
Where can you find Oesophagostomum worms during the necropsy?
• In the large intestine
• In the small intestine
• In the stomach
• In the rectum
In the large intestine
It occurs in the gizzard of ducks
• Syngamus trachea
• Amidostomum anseris
• Cyathostoma trachea
• Cyathostomum anseris
Amidostomum anseris
Onchocerca cervicalis microfilariae cannot cause eye infection
• True • False
False