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A facultative parasite is an organism that may resort to parasitic activity, but does not absolutely rely on any host for completion of its life cycle. Examples of facultative parasitism occur among many species of fungi , such as family members of the genus Armillaria .
Hyperparasitoids are either facultative (can be a primary parasitoid or a hyperparasitoid depending on the situation) or obligate (always develop as a hyperparasitoid). Levels of parasitoids beyond secondary also occur, especially among facultative parasitoids. In oak gall systems, there can be up to five levels of parasitism. [13]
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. Relationship between species where one organism lives on or in another organism, causing it harm "Parasite" redirects here. For other uses, see Parasite (disambiguation). A fish parasite, the isopod Cymothoa exigua, replacing the tongue of a Lithognathus Parasitism is a close ...
These can be categorized into three groups; cestodes, nematodes and trematodes.Examples include: Acanthocephala; Ascariasis (roundworms); Cestoda (tapeworms) including: Taenia saginata (human beef tapeworm), Taenia solium (human pork tapeworm), Diphyllobothrium latum (fish tapeworm) and Echinococcosis (hydatid tapeworm)
Facultative A facultative parasite can complete its life cycle independent of a host. 2 a Stem A stem parasite attaches to the host stem. b Root A root parasite attaches to the host root. 3 a Hemi- A hemiparasitic plant lives as a parasite under natural conditions, but remains photosynthetic to at least some degree. Hemiparasites may obtain ...
العربية; Aragonés; Asturianu; Azərbaycanca; বাংলা; Башҡортса; Беларуская; Беларуская (тарашкевіца)
As a result, the companion collard plants attract more aphid parasitoids, which kill aphids in both the collard and the nearby sugar beets. [36] In a related study, ethylene and other compounds released by rice plants in response to brown planthopper feeding attracted a facultative parasitoid that parasitizes brown planthopper eggs. [30]
Facultative intracellular parasites are capable of living and reproducing in or outside of host cells. Obligate intracellular parasites, on the other hand, need a host cell to live and reproduce. Many of these types of cells require specialized host types, and invasion of host cells occurs in different ways.