intermediate host


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Related to intermediate host: paratenic 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.

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.
References in periodicals archive ?
Lymnaea palustris and Lymnaea fuscus are potential but uncommon intermediate hosts of Fasciola hepatica in Sweden.
This can be attributed to many factors, viz., exposure time to different intermediate hosts, increase in body length and immunity with advancement of age.
Cercarial release in the absence of suitable second intermediate host from a given environment leads to death of the larval stage.
Caption: Figure 5: Silica transport dynamics in a system with intermediate host rock permeability ([10.sup.-15] [m.sup.2]), a shallow intrusion emplacement depth, and intermediate host rock porosity (0.05).
Although a reservoir species was not discovered in this study, this study creates a starting point to continue the search for the intermediate host. This study provides invaluable information about which species located near the oyster farms in the Damariscotta River Estuary may harbor Haplosporiclium nelsoni.
A new intermediate host for Fascioloides Magna (Bassi, 1873) Ward, 1917.
Sheep can be a primary or intermediate host to a number of different tapeworms.
Human beings are usually infected as intermediate hosts when they ingest egg-contaminated food or water.
The genus Levinseniella Stiles and Hassall, 1901, contained more than 40 species described mainly from birds around the world, and metacercariae of these species use mainly crustaceans as second intermediate hosts. Of these, only three especies have been described from South America: Levinseniella (M.) cruzi [13] in Anas bahamensis in Brasil; L.
They cover medically important fish-borne zoonotic trematodes, collecting fish-borne trematodes from the final host, collecting fish-borne trematode cercaria, collecting fish-borne trematodes in infective stage from the fish: the second intermediate host, the molecular systematics of fish-borne trematodes, and methods of molecular study: DNA sequence and phylogenetic analysis.
One has a flea as the intermediate host and one type has a small rodent or rabbit as the intermediate host for the immature tapeworm.

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