Intermediate Host


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intermediate host

[‚in·tər′mēd·ē·ət ′hōst]
(biology)
The host in which a parasite multiplies asexually.

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.

References in periodicals archive ?
Molecular phylogenetic relationships in the aquatic snail genus Lymnaea, the intermediate host of the causative agent of fascioliasis: insights from broader taxon sampling.
Vector control strategies are ineffective for zoonotic paragonimiasis due to the widespread distribution of snail and crustacean intermediate hosts in freshwater ecosystems and the large variety of both domestic and wild animal hosts consuming infected freshwater crustaceans.
Tapeworms require one intermediate host (always an herbivore) and a definitive host (always a carnivore) in which to reproduce.
solium commonly forms cysticerci in tissues of various atypical intermediate hosts, including rabbits, camels, dogs, cats, and humans (2,4).
Gastric nematode diversity between estuarine and inland freshwater populations of the American alligator (Alligator mississippiensis, Daudin 1802), and the prediction of intermediate hosts.
Although it is believed that there is an intermediate host required for Haplosporidium nelsoni, there are few published studies on the
It is present in all the organisms that feed on fish because its intermediate host is fish and is present in the meat of fish.
Unfortunately, the wetlands inhabited by the intermediate host snails present a significant barrier to developing improved risk assessment models (Malone and Zukowski 1992, DeRoeck et al.
Sheep can be a primary or intermediate host to a number of different tapeworms.
The larval stage results in the formation of echinococcal cysts in intermediate hosts.
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.

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