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 (păr′ə-sĭ-toid′, -sī′toid)
An organism, usually an insect, that lives on or in a host organism during some period of its development and eventually kills its host.

par′a·sit·oid′ adj.


(Zoology) zoology an animal, esp an insect, that is parasitic during the larval stage of its life cycle but becomes free-living when adult


(ˈpær ə sɪˌtɔɪd, -saɪ-)

1. an insect that hatches within a host, feeds on it during the larval stage, and becomes free-living when the host dies.
2. any organism whose mode of life is intermediate between a parasite and a predator.
3. of or pertaining to a parasitoid.
[1920–25; < New Latin Parasitoïdea (1913); see parasite, -oid]
par′a•sit•oid•ism, n.
References in periodicals archive ?
The objective of this study was to conduct surveys to find egg parasitoids that could be used as potential biological control agents to improve control of D.
Hyperparasitism is a primary factor in biocontrol ecology disturbance, and success of a biological control depends upon mitigation of hyperparasitism on parasitoids used against the target pest.
Dirhinus giffardii, was reared on artificial diet (solution of 30% honey and 70% water), the food (cotton impregnated with honey and water) given to the Dirhinus giffardii presents in the cages, and these wigs were washed daily and fresh diet were offered to the parasitoids.
Hymenoptera parasitoids in protected area of Atlantic Forest biomes and organic rice field: compared assemblages
Therefore, with the awareness of the damage produced by recurrent chemical usage, biological control utilizing parasitoids, may offer a promising and safe solution for managing the Pseudococcidae infestations in vines.
To resolve the above problems, new environmental friendly methods to control the insect damages have become of interest to researchers; biological control of pests using parasitoids or predators is an example (Scholler et al, 1997).
This decline was due to significant increases in EAB larval parasitism, first by native parasitoids, then by T.
Currently, no biological control program has been implemented in Brazil; therefore, the parasitoids that are reared from the black scale are either autochthonously or accidentally introduced with the pest or closely related insects.
Some host-feeding whitefly parasitoids by starving for a certain period of time before release may kill more hosts.
According to Navasero, neocotinoids have toxic effects on bees and may disrupt nature's balance once applied to areas where there is already the presence of the parasitoids.
Herbivore-damaged plants release many types of volatile organic compounds (VOCs), which guide parasitoids (beneficial parasitic wasps) to their herbivore hosts.