Intermediate Host

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intermediate host

[‚in·tər′mēd·ē·ət ′hōst]
The host in which a parasite multiplies asexually.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Intermediate Host


(in biology). (1) An animal in which sexually immature parasites live. Those animals in which parasites reach sexual maturity and reproduce are called definitive hosts. Man, for instance, is the intermediate host of the causative agent of malaria (malarial plasmodium), while the mosquito is the definitive host.

(2) A plant on which a rust fungus, or a parasite of a cultivated plant, passes part of its life cycle. Most of these fungi form aecidial sporangiophores, or aecidia, on intermediate hosts; for example, stem rust of the grasses Puccinia graminis forms on barberry leaves.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
First records of molluscs naturally infected with Angiostrongylus cantonensis (Nematoda: Metastrongyloidea) in Northeastern Brazil, including new global records of natural intermediate hosts. Revista do Instituto de Medicina Tropical de Sao Paulo, vol.
New insight in lymnaeid snails (Mollusca, Gastropoda) as intermediate hosts of Fasciola hepatica (Trematoda, Digenea) in Belgium and Luxembourg.
When the organs of the intermediate hosts that contain the cyst are ingested by the definitive hosts, the life cycle of the parasite can start again.
Other investigators (19) while working on Tenderfoot Lake and Morris Lake also found that, Tenderfoot Lake being more polluted have much higher content of chlorophyll A, providing a much better habitat for snails which act as the intermediate hosts for most of the parasitic diseases, thus having more parasitic infection as compared to Morris Lake.
Another aspect of the problem is where these snails are intermediate hosts to human parasites.
Pulmonates like planorbids and lymnaeids are among the most important intermediate hosts involved in a fluke life cycle where vertebrate hosts like mammals and birds are commonly parasitized [21].
Rodents, birds, insectivores and even human have been reported as intermediate host (Sterba et al., 1976; Loos-Frank, 2000; Bowman et al., 2002; Mino et al., 2013).
The second stage larvae, which are short-lived in the intermediate host, have simpler oral regions.
Zhang et al., 2013 reported that weeds play important role as alternate and intermediate hosts for B.
Most species of Sarcocystis that infect domestic animals are species-specific for the intermediate host (DUBEY et al., 1988).
Goats being intermediate host usually get the infection from dog's excreta; therefore treatment of dogs in and around farms for tapeworm should be made.

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