The hydatid cyst found in the liver or lungs of sheep represents which stage of Echinococcus granulosus?
Correct answer: A. The larval metacestode stage
- A. The larval metacestode stage
- B. The adult intestinal stage
- C. The free-living larval stage
- D. The sexually mature oocyst stage
Explanation
A hydatid cyst is the larval metacestode of Echinococcus granulosus developing in an intermediate host such as a sheep. Adult worms occur in the intestine of dogs and other canids, not inside the cyst.
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About Veterinary Parasitology
Covers protozoa, helminths and arthropods that infect domestic animals, including their morphology, life cycles, hosts, transmission and clinical effects. Questions connect parasite identification with diagnosis, prevention and treatment, and distinguish endoparasites from ectoparasites and definitive hosts from intermediate hosts.
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