P1 ratio

This is the longest tapeworm known to infect equines.

Anoplocephala magna

This is the most pathogenic tapeworm of avians

Davainea proglottina

A necropsy of a turkey revealed the presence of a 20 cm long tapeworm with proglottids that are initially wider than long but lengthens towards the posterior segments. Examination of the scolex showed that is has a small, armed rostellum, and oval suckers that are also armed. There is a distinct neck. What parasite is this?

Raillietina tetragona

The carcass of a pig was condemned due to findings of small cysts on its shoulder muscles. The cysts were viewed microscopically, and it showed the presence of an invaginated scolex. What is this?

Cysticercus cellulosoe

A recently rescued dog was brought to the clinic as it had been having wet stool, often mucoid. A fecalysis was performed, and the veterinary technician in the lab reports that the patient was positive for Taenia. Which of the following would describe the eggs of this parasite?

Single round oncosphere covered by a thick wall with striations

How would you describe the eggs of Monieza expansa?

Triangular

Histopathology of the duodenal mucosa of a rat presented with areas of enlargement of the intestinal villi due to solid masses, each containing a cysticercoid later identified to be that of Hymenolepis nana. How did the rat get infected with this parasite?

Ingestion of food contaminated by rodent feces

What is the source of infection of hydatidosis in man?

Ingestion of vegetation contaminated with feces of infected dog

Horses become infected with Anoplocephalidae tapeworms through the ingestion of what intermediate host?

Oribatid mite

’Staggers’ is a brain disease in sheep caused by the presence of the metacestode of which parasite?

Taenia multiceps

Chickens infected with this tapeworm suffers from hyperplastic enteritis with nodular formation in the small intestines.

Raillietina echinobothridia

How does disease manifest in cats infected with Taenia compare to cats infected with Spirometra?

Taenia causes intestinal signs only, while subcutaneous nodules may develop with Spirometra

Hepatic alveolar cyst hydatidosis in humans is mainly due to accidental ingestion of the eggs of which parasite?

Echinococcus multilocularis

In a layer poultry flock with weight loss and reduced egg pro-duction, necropsy reveals the presence of Davainea tapeworms embedded in the duodenal mucosa. How does the pathogenesis of this tapeworm infection contribute to these clinical signs?

It causes mucosal damage and necrosis leading to impaired nutrient absorption

Studies show that fishes with weak and irregular swimming patterns and a tendency to swim close to the water surface were found to have a higher percentage of infection by Dibothriocephalus plerocercoids. Which statement explains how this infection contributes to such behavior in fishes?

The plerocercoids encysts in muscles, causing fishes to have weaker mobility allowing predator DH to easily catch them

Pruritus ani is often associated in dogs that were positive for Dipylidium caninum. How does this tapeworm cause this to occur?

Gravid segments migrate out into perianal area causing mechanical irritation.

Anemia is often seen in animals and humans infected with Diphyllobothrium latum even if the worm burden is low. Which of the following statements would explain why this occurs with infections of this tapeworm?

It competes with the host for vitamin B12, which is crucial for RBC production.

As the Consulting veterinarian of a piggery, you want to monitor the success of a control program for Taenia solium that you helped plan. Which diagnostic procedure is best prioritized to evaluate the effectiveness of your program?

Inspecting the tongue of live pigs for presence of cysticercus

In the absence of serological tests, which of the following methods would help determine if beef cattle are infected with Taenia saginata?

Necropsy to find cysticercus in musculature

When diagnosing Dipylidiasis in dogs and cats, which diagnostic method would be most suitable for detecting the presence of mature adult tapeworms?

Fecal examination to find the egg packets

A pet owner consulted with you to plan a prevention and control strategy for recurring infections of dipylidiasis in a household with multiple dogs and cats. Which of the following plans would be the most effective?

Regular deworming for all pets along with strict flea control measures in both animals and environment.

You are tasked with designing a control program to manage recur-rent outbreaks of Choanotaenia infundibulum in a poultry farm. What combination of strategies is best to prevent future infections?

Improvement of sanitation and manure disposal and installation of rotating fans

This is the largest liver fluke that is primarily seen in European White-tailed deer, but can also infect cattle.

Fascioloides magna

This is a group of very small flukes located in the intestinal tract of fish-eating hosts

Heterophyids

What is the scientific name of the Lancet Liver Fluke?

Dicrocoelium dentriticum

Other than freshwater fishes, this monogenean fluke is also found in the skin of frogs.

Gyrodactylus elegans

In a necropsy of a horse, a parasite around 1 cm long was obtained from the small intestine. It was flattened, but saucer-shaped with curved margins, and had an anterior cone with small suckers found in both ends of the worm. What could this parasite be?

Gastrodiscus

Necropsy of a sheep featured the presence of small, flat, Ianceolate-shaped parasite in the liver, near the bile ducts. The parasite is transparent, allowing a view of a pair of lobated testes in the anterior half of the body-and an extensively branched uterus filling the posterior half. What could this parasite be?

Dicrocoelium dendriticum

A dog owned by a rice field farmer had died from severe diarrhea. A necropsy was conducted and small, elongated flukes were collected from the intestines. The suckers were very close together, with the ventral sucker large and strong, and the oral sucker is surround by a double row of spines. What is this parasite?

Echinostoma ilocanum

Certain flukes are known to cause the formation of fibrosis in the liver or bile ducts. Which of the following trematodes is UNLIKELY to be responsible for such lesions to develop in their respective hosts?

Schistosoma

A duck had laid eggs that were rather small and abnormal in size. When those eggs were accidentally cracked open by the farmer, he was surprised to find small flukes inside! This is only possible beCause this fluke infects the oviduct of birds. Which fluke causes this type of infection?

Prosthogonimus

A carabao with a history of mucopurulent nasal discharge was exhibiting snoring sounds while respiring, indicating a possible blockage in the nasal passages. Rhinoscopic exam-nation of showed the presence of granulomas on the nasal mucosa. What parasite is likely associated with this case?

Schistosoma

There was an increase in mortality from hemorrhagic duodenitis by Paramphis(omum cewi in young free-ranged goats shortly aRer a period of drought. Which of the following statement would explain how this occurred?

Ingested aquatic vegetation is concentrated with metacercariae which all become young fluke feeding on intestinal mucosa.

A cat with paragonimiasis show formation of large lung cysts that are visible through radiography. What mechanism contributes to the formation of these cysts?

Migratory habit of young flukes through the lung and encapsulation of adult pairs in a fibrotic wall.

A farmer reports decreased milk production and lethargy in dairy cattle grazing near a swampy area. The veterinarian suspects liver fluke infection but wants to confirm the diagnosis. Which diagnostic approach would be the most effective for detecting trematode eggs in fecal samples?

Apply sedimentation technique using distilled water

Why is fecal floatation generally not recommended for diagnosing infections caused by Schistosoma haematobiumi?

Eggs are not shed in feces but are instead passed in urine, as the adult flukes reside in bladder veins.

On a ranch with multiple natural freshwater sources, cattle that are allowed to free-range frequently suffer from Schistosoma infections. What practical plan should be best implemented to control the disease?

Build designated drinking troughs with clean pipe-water while installing barriers around nearby water sources

A cat owner lives near a freshwater pond. Recently, one of her cats, which was allowed to roam outdoors, had been having gastrointestinal issues and was brought to the veterinarian. Through fecalysis a diagnosis of infection by the fluke Alaria alata was made. Which of the following strategies would be most elective to prevent her other cats from becoming infected?

Restrict outdoor access to discourage cats from hunting frogs around nearby pond.

A goat farm has recurring DicrocOelium dendriticum infections. Which of the following integrated control plans would be most effective?

Treat with praziquantel, reduce ant populations in grazing areas, and implement regular fecal testing.