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Definition
| Parasites live on or within their living prey (host), depending upon it for nutrition and habitat; typically reduce the fitness of their host, but do not generally kill it. |
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Definition
| Any deviation from a normal state of health; the outcome of an infection. |
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Definition
| A heavy load of parasites. |
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Definition
| Microparasite, macroparasite, ectoparasite, endoparasite. |
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Definition
| Small size and short generation time: viruses, bacteria and protozoa. |
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Definition
| Relatively larger, long generation time, typically do not complete life-cycle in one host: flatworms, roundworms, fungi, flukes, mistletoes and other parasitic plants. |
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Definition
| Parasites that live on skin, fur or feathers of the host. |
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Definition
| Parasites that live within the body of the host. |
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Term
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Definition
| Reciprocally positive interactions between species. |
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Definition
| Relationship co-evolved to the point that neither member of the mutualistic associate can persist without the other. |
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Definition
| Association with the other mutualist is nonessential but nonetheless leads to positive effects on individual fitness. |
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Definition
| Association in which only one member experiences a positive effect while the other has neither a positive nor negative response; may also be either obligate or facultative. |
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Definition
| Reduction of gaseous nitrogen to ammonium (a form plants can use); plants benefit from higher nitrogen availability while bacteria gain access to carbon from the plant. |
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Term
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Definition
| Association of fungi with roots of plants; plants benefit from higher uptake rates of nutrients and water from soil while fungi gain access to carbon from the plant. |
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