One of the mysteries of the English language finally explained.
A parasitic flatworm of the class Cestoda; a tapeworm.
- ‘There are a few parasites of the black crappie, which include many protozoa, trematodes, cestodes, and nematodes.’
- ‘The resultant ‘sperm trading’ is known from sea slugs, free-living flat-worms and possibly cestodes and may be widespread.’
- ‘This is surprising because hermaphroditic cestodes may face social dilemma situations that are probably easier to specify than in other systems.’
- ‘However, among helminth parasites, e.g., trematodes, cestodes, nematodes, and acanthocephalans, this is not the case.’
- ‘The cestodes and lungworms require intermediate hosts for transmission, but all other parasites are transmitted directly from host to host and are therefore likely to be influenced by host social behavior.’
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