Establishment and Growth of Parasites
A parasite must not only be successful in reaching the next host in its particular life-cycle, but must also establish itself, grow and mature if reproductive success is to be achieved. Sexual maturity will normally occur only in the final host. In the intermediate host (or hosts, should the life-cycle be indirect), the parasite may grow in size and may increase its numbers dramatically by asexual multiplication. Alternatively it may develop into a quiescent stage, such as the metacercaria of the Digenea, awaiting transmission to the next host, either by ingestion or death of the intermediate host.
KeywordsBile Salt Intermediate Host Hydatid Cyst Cyst Wall Alimentary Canal
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