Bionomics of trioxys indicus, an aphidiid parasitoid of aphis craccivora. x. superparasitism caused by confinement with the host
1982
Singh, Rajendra | SINHA, T.B.
Superparasitism in Aphis craccivora by Trioxys indicus was observed in the field and in the laboratory. A parasitoid which is ready to oviposit will not so readily lay eggs in parasitised hosts and search-deterring substances may reduce superparasitism. As the number of parasitised hosts in a container increases, the “escape” attempts of the parasitoid are more frequent. After a period of preening and standing-still, the parasitoid returns to the leaf, begins to encounter, prick, and probe the hosts again; the escape tendency apparently decreases. These activities either lower the oviposition threshold or overcome it resulting in superparasitism.
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