heteroecious

Dictionary: het·er·oe·cious (hĕt'ə-rē'shəs) pronunciation

adj.
Spending different stages of a life cycle on different, usually unrelated hosts. Used of parasites such as rust fungi and tapeworms.

[HETERO- + Greek oikiā, house + -OUS.]

heteroecism het'er·oe'cism (-sĭz'əm) n.

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Medical Dictionary: het·er·oe·cious

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(hĕt'ə-rē'shəs)
adj.

Spending different stages of a life cycle on different, usually unrelated hosts. Used of parasites such as rust fungi and tapeworms.

het'er·oe'cism (-sĭz'əm) n.

Veterinary Dictionary: heteroecious

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Requiring different hosts in different stages of development; a characteristic of certain parasites.

WordNet: heteroecious

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Note: click on a word meaning below to see its connections and related words.

The adjective has 2 meanings:

Meaning #1: of parasitic animals; spending different stages of the life cycle on different host species
Antonym: homoecious (meaning #1)

Meaning #2: of parasites; passing through different stages of the life cycle on different host species
Antonym: autoecious (meaning #1)

Wikipedia: Heteroecious

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A heteroecious parasite is one that requires at least two hosts. The primary host is the host in which the parasite spends its adult life; the other is the secondary host.

Heteroecious parasites include:

Gymnosporangium (Cedar-apple rust); the juniper is the primary (telial) host and the apple, pear or hawthorn is the secondary (aecial) host
Cronartium ribicola (White pine blister rust); the primary host are white pines, and currants the secondary.

History

The phenomenon of heteroecy was first discovered by A.S. Ørsted in 1863.

Ørsted, A.S. (1963) Om Sygdomme hos Planterne, som foraarsages af Snyltesvampe, navnlig om Rust og Brand og om Midlerne til deres Forebyggelse. Kjøbenhavn.

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	Gymnosporangium juniperi-virginianae (mycology)
	Puccinia graminis (mycology)
	Cronartium ribicola (mycology)

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Copyrights:

		Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more
		Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more
		Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more
		WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more
		Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Heteroecious". Read more