Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica

Some species of plant-mutualistic ants kill the vegetation growing in the vicinities of their host plant, creating an area of bare ground (clearing). The reduced competition in the clearing may facilitate the establishment of host species sprouts (clones and seedlings), which in turn benefits the an...

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Main Author: Sabrina Amador-Vargas
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Psyche: A Journal of Entomology
Online Access:http://dx.doi.org/10.1155/2012/491592
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author Sabrina Amador-Vargas
author_facet Sabrina Amador-Vargas
author_sort Sabrina Amador-Vargas
collection DOAJ
description Some species of plant-mutualistic ants kill the vegetation growing in the vicinities of their host plant, creating an area of bare ground (clearing). The reduced competition in the clearing may facilitate the establishment of host species sprouts (clones and seedlings), which in turn benefits the ants with additional food and shelter (“sprout-establishment hypothesis”). To test this hypothesis, the density and origin of Acacia collinsii sprouts growing inside clearings and in the vicinities of acacia plants without clearings were compared. Also, to assess the pruning selectivity of acacia ants (Pseudomyrmex spinicola), seedlings were transplanted into clearings. The reaction of ants towards unrewarding acacia seedlings (without food and shelter) was also tested. The density of acacia sprouts growing inside clearings was almost twice that in the vicinities of host plants without clearings, and sprouts were inhabited by nestmates of the colony that made the clearing. Clones and seedlings were found in similar proportions in the clearings, and ants did not kill unrewarding acacia seedlings or seedlings unrelated to their host. The benefit reported here for the ants could be in conflict with the host plant, especially when the plant has rhizomal reproduction.
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series Psyche: A Journal of Entomology
spelling doaj-art-796ff1d83d354800ab1869329938df6a2025-02-03T06:11:29ZengWileyPsyche: A Journal of Entomology0033-26151687-74382012-01-01201210.1155/2012/491592491592Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa RicaSabrina Amador-Vargas0Escuela de Biología, Universidad de Costa Rica, San Pedro, Costa RicaSome species of plant-mutualistic ants kill the vegetation growing in the vicinities of their host plant, creating an area of bare ground (clearing). The reduced competition in the clearing may facilitate the establishment of host species sprouts (clones and seedlings), which in turn benefits the ants with additional food and shelter (“sprout-establishment hypothesis”). To test this hypothesis, the density and origin of Acacia collinsii sprouts growing inside clearings and in the vicinities of acacia plants without clearings were compared. Also, to assess the pruning selectivity of acacia ants (Pseudomyrmex spinicola), seedlings were transplanted into clearings. The reaction of ants towards unrewarding acacia seedlings (without food and shelter) was also tested. The density of acacia sprouts growing inside clearings was almost twice that in the vicinities of host plants without clearings, and sprouts were inhabited by nestmates of the colony that made the clearing. Clones and seedlings were found in similar proportions in the clearings, and ants did not kill unrewarding acacia seedlings or seedlings unrelated to their host. The benefit reported here for the ants could be in conflict with the host plant, especially when the plant has rhizomal reproduction.http://dx.doi.org/10.1155/2012/491592
spellingShingle Sabrina Amador-Vargas
Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
Psyche: A Journal of Entomology
title Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
title_full Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
title_fullStr Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
title_full_unstemmed Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
title_short Plant Killing by Mutualistic Ants Increases the Density of Host Species Seedlings in the Dry Forest of Costa Rica
title_sort plant killing by mutualistic ants increases the density of host species seedlings in the dry forest of costa rica
url http://dx.doi.org/10.1155/2012/491592
work_keys_str_mv AT sabrinaamadorvargas plantkillingbymutualisticantsincreasesthedensityofhostspeciesseedlingsinthedryforestofcostarica