intermediate host

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Related to intermediate hosts: Secondary host

host

 [hōst]
1. an animal or plant that harbors and provides sustenance for another organism (the parasite).
2. the recipient of an organ or other tissue derived from another organism (the donor).
accidental host one that accidentally harbors an organism that is not ordinarily parasitic in the particular species.
definitive host (final host) a host in which a parasite attains sexual maturity.
intermediate host a host in which a parasite passes one or more of its asexual stages; usually designated first and second, if there is more than one.
paratenic host a potential or substitute intermediate host that serves until the appropriate definitive host is reached, and in which no development of the parasite occurs; it may or may not be necessary to the completion of the parasite's life cycle.
host of predilection the host preferred by a parasite.
primary host definitive host.
reservoir host an animal (or species) that is infected by a parasite, and which serves as a source of infection for humans or another species.
secondary host intermediate host.
transfer host one that is used until the appropriate definitive host is reached, but is not necessary to completion of the life cycle of the parasite.

in·ter·me·di·ate host

, intermediary host
1. one in which larval or developmental stages occur;
2. a host through which a microorganism can pass or which contains an asexual stage of a parasite.
Synonym(s): secondary host

intermediate host

n.
An organism in or on which a parasite develops to an adult but not sexually mature stage.

intermediate host

any animal in which the larval or intermediate stage of a parasite develops but does not sexually reproduce. Certain snails are intermediate hosts for liver flukes and schistosomes. Humans are intermediate hosts for malaria parasites. Also called secondary host. Compare dead-end host, definitive host, reservoir host. See also host.

in·ter·me·di·ate host

, intermediary host (in'tĕr-mē'dē-ăt hōst, in'tĕr-mē'dē-ar-ē)
1. One in which larval or developmental stages occur.
2. A host through which a microorganism can pass or contains an asexual stage of a parasite.

intermediate host

any host upon which a parasite spends that part of its life cycle in which it is not sexually active.

intermediate

1. between; intervening; resembling, in part, each of two extremes.
2. a substance formed in a chemical process that is essential to formation of the end-product of the process.

intermediate cell mass
intermediate filaments
intracellular protein fibers which are part of the cytoskeleton in eukaryotic cells.
intermediate host
especially in parasitology, a host in which the parasite undergoes a stage, usually the larval or nonsexual stage, in its development. The host may be an insect vector which also acts as the transmitting medium, or another insect or animal species which is a passive enhancer, the infection being spread by other means.
intermediate junction
see zonula adherens.
intermediate mesoderm
mesoderm located just lateral to the somites, uniting the paraxial and lateral plate mesoderm.
intermediate sheep footrot
less underrunning of horn and less likelihood of resulting in chronic lesions than in virulent footrot.
References in periodicals archive ?
Dogs as alternative intermediate hosts of Taenia solium in Papua (Irian Jaya), Indonesia confirmed by highly specific ELISA and immunoblot using native and recombinant antigens and mitochondrial DNA analysis.
Secondly, the variation of lung, stomach, and intestinal parasite prevalence and intensity we found across the range of the alligators likely reflects the dissimilarity of intermediate host abundance and environmental parameters of host habitat.
Many parasites have complex lifecycles and it is not uncommon for some parasites to require an intermediate host to complete their lifecycle.
However, regional adaptation of parasites to their intermediate hosts is common (Lively 1989, Vera 1991 as cited by Combes 2001).
Screening via serial fecal examinations was recommended to occur for at least 2 weeks before any moves and be incorporated into quarantine protocols, especially if passerine birds had been previously housed in an exhibit with motmots or with snail intermediate hosts.
In addition to "survivor" programming, adventurous and exotic eating habits, including the consumption of marinated (ceviche) or raw (sashimi, sushi) fish, may also expose individuals to the intermediate hosts that cause gnathostomiasis.
The difficult link to define in opisthorchis' development cycle is its first intermediate host, bithyniidae shellfish, which requires certain conditions in its habitats--temperature, flow, light, and the presence of aquatic vegetation.
Eggs are excreted through feces and require snail as intermediate host that lives mainly in water.
Copepods also can act as controls for malaria by consuming mosquito larvae, and they're intermediate hosts of many human and animal parasites like the one recently identified in cats at Cornell.
Do not dispose the cat's litter in the vegetation to protect other herbivorous intermediate hosts.
Digenetic trematodes have a complex life cycle that may include three intermediate hosts and several developmental stages, e.

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