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13 Cards in this Set
- Front
- Back
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Coevolution
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The evolution of two interacting species, each in response to selection imposed by the other.
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Ectoparasite
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A parasite that lives on the surface of another organism. Compare endoparasite.
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Endoparasite
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A parasite that lives inside the body of its host organism. Compare ectoparasite.
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gene-for-gene interaction
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A specific defensive response that makes particular plant genotypes resistant to particular parasite genotypes.
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Host
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An organism on or within which a parasite or other symbiont lives. Compare symbiont, symbiosis.
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latent period
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A period in which an individual is infected with a disease but cannot spread the disease.
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Macroparasites
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Relatively large parasite species, such as arthropods and worms. Compare microparasites.
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Microparasites
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Parasite species too small to be seen with the naked eye, such as bacteria, protozoans, and fungi. Compare macroparasites.
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Parasite
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An organism that lives in or on a host organism and feeds on its tissues or body fluids.
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Pathogen
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A parasite that causes disease.
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Symbiont
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As the smaller member of a symbiosis, an organism that lives in or on an organism of another species, its host. Compare host, symbiosis.
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threshold density
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The number of individuals in a population susceptible to a disease at (or above) which the disease will become established and spread.
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vertical transmission
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The spread of a disease from mother to newborn.
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