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WHat are the sites at which 4 moultings in Ascaris take place??

WHat are the sites at which 4 moultings in Ascaris take place??

Grade:12th pass

1 Answers

Raheema Javed
156 Points
6 years ago
The life cycle can be direct or indirect with paratenic hosts. The pig ingests the egg with an L2 larva inside. The larvae undergo hepatic migration, moult to the L3 form, and then migrate to the lungs. Larvae enter the alveoli, are coughed up, and then swallowed. This process is known as hepatotracheal migration. They then moult two times and become adults.

Paratenic hosts ingest the eggs and the L2 larvae remain in the tissues of the paratenic host until a pig eats them. These may include beetles and earthworms, as well as large to jumbo chicken eggs from at-risk fowl.

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