A parasitoid is an organism that spends a significant portion of its
life history attached to or within a single
host organism which it ultimately kills (and often consumes) in the process. Thus they are similar to typical
parasites except in the certain fate of the host. In a typical parasitic relationship, the parasite and host live side by side without lethal damage to the host. Typically, the parasite takes enough
nutrients to thrive without preventing the host from
reproducing. In a parasitoid relationship, the host is killed, normally before it can produce offspring. When treated as a form of
parasitism, the term necrotroph is sometimes (though rarely) used.
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