The indirect life cycle involves an intermediate host. The first two moults usually occur in the intermediate host. Infection of the definitive host is either via ingestion of the intermediate host or by inoculation of the L3 by an intermediate host such as an insect. 4 июн. 2016 г.
What is an indirect life cycle?
An indirect life cycle is a type of a life cycle wherein a parasite is transmitted from one host to another by using a vector or by an intermediate host of another species. A parasite with an indirect life cycle would therefore require more than one type of host species to complete their life cycle.
Do nematodes have indirect development?
Some filarial nematodes, Plasmodium, and Leishmania are examples of parasites with indirect life cycles.
What is direct and indirect cycle?
The key difference between direct lifecycle and indirect lifecycle is that, in the direct lifecycle, the simple parasite lives their lifespan and reproduces within one host while in the indirect lifecycle, the complex parasites live in many numbers of hosts during the completion of their life cycle.
What is the life cycle of nematodes?
General Nematode Life Cycle Nematodes have three main life-cycle stages: eggs, larvae and adults. Adult worms infect definitive hosts (those animals in which sexual development of the worm occurs) whereas larval stages may also be free-living or parasitise intermediate hosts or invertebrate vectors.
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