elaiosome


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Related to elaiosome: Myrmecochory

elaiosome

(ɪˈleɪəˌsəʊm)
n
(Botany) an oil-rich body on seeds or fruits that attracts ants, which act as dispersal agents
[from Greek elaion oil + -some3]
References in periodicals archive ?
The protuberant base has been described as a horseshoe, circular torus, callus-ring, caruncle, basal constricted zone, or elaiosome.
Attached to each tiny seed is a fleshy appendage called an elaiosome that's rich in protein and lipids, but serves no direct impact to the seed's survival.
Further observations suggest that the seed damage occurs primarily to the seed elaiosome and secondarily impacts the seed coat.
vacciniifolia is an elaiosome, an oil-rich structure, which suggests a likely adaptation for myrmecochorous (ant) dispersal (Fig.
Although ants are not attracted from a distance to these seeds (Sheridan and others 1996), upon contact with the elaiosome, ants are stimulated to carry the elaiosome (and secondarily the attached seed) to their nests.
In the act of dispersing seeds, ants first carry the seeds to their nest, where the elaiosome is removed.
Most myrmechorous diaspores have a lipid-rich structure, such as an elaiosome, which is the food item desired by the ant; the attached seed is just ballast.
Elaiosome removal has been shown to enhance long-term seed survival of ant-dispersed seeds (Boyd, 2001; Garrido et al.
When ants encounter a seed with an elaiosome, the seed and the elaiosome are almost invariably carried back to the ant nest.
He observed it apparently feeding on the attenuated base (the attachment area) of the achene, and concluded that the base was an elaiosome, i.
Ants can transport seeds to their nest, remove the elaiosome and feed it to their developing larvae, and then discard the intact seed within the nest (Culver and Beattie, 1980; Beattie, 1985).