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 (Juniper-apple rust); the juniper is the primary host and the apple, pear or hawthorn is secondary.
- Cronartium ribicola (White pine blister rust); the primary host are white pines, and currants the secondary.Template:Biosci-stub