Heteroxeny, or the use of intermediate hosts, is a common feature of many nematode groups.
Do nematodes need intermediate host?
Organisms that are required for the completion of a nematode life cycle but do not contain the final reproductive adult stage are known as intermediate hosts. Figure 6. Direct life cycle. Nematode can infect fish directly without the need for an intermediate host.
Which parasites have intermediate hosts?
Table 2: Parasite and their intermediate host(s)ParasiteIntermediate HostTapeworm (Taenia solium)Humans, Cow, PigsSchistosoma mansoniFreshwater snails (Biomphalaria spp.)Toxoplasma gondiiMany mammals and birds
What are the hosts of nematodes?
Many mammalian-parasitic nematodes infect only one or a limited number of host species. For example, Strongyloides fulleborni kellyi is a human parasite, while Strongyloides stercoralis has a limited host range that includes humans, primates, and dogs (Figure 1A) [28].
Which parasites do not have intermediate hosts?
The correct answer is Ascaris.
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