Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy

A canopy crane was used to assess ant defensive behaviour and recruitment at baits in the Parque Natural Metropolitano, Panama. Sardine-honey baits were set within a grid of 25 paired upper and lower canopy points, for which coordinates and height were recorded. We tested the hypothesis that interac...

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Main Authors: Ribeiro, S., Espirito Santo, N., Delabie, J., Majer, Jonathan
Format: Journal Article
Published: Springer 2013
Subjects:
Online Access:http://www.myrmecologicalnews.org/cms/images/pdf/volume18/mn18_113-120_non-printable.pdf
http://hdl.handle.net/20.500.11937/11491
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author Ribeiro, S.
Espirito Santo, N.
Delabie, J.
Majer, Jonathan
author_facet Ribeiro, S.
Espirito Santo, N.
Delabie, J.
Majer, Jonathan
author_sort Ribeiro, S.
building Curtin Institutional Repository
collection Online Access
description A canopy crane was used to assess ant defensive behaviour and recruitment at baits in the Parque Natural Metropolitano, Panama. Sardine-honey baits were set within a grid of 25 paired upper and lower canopy points, for which coordinates and height were recorded. We tested the hypothesis that interactions in the ant mosaic become stronger as one moves from the lower to the upper canopy. We sampled 23 ant species, with Azteca (A. trigona, A. velox, Azteca nr. chartifex, and A. snellingi) being by far the most abundant genus, recruiting to 63% of baits and excluding all other ant genera. Camponotus (Myrmobrachys) sp. 1 also showed a statistically significant exclusion of other ant species over 95% of its occurrence. Cephalotes umbraculatus and Dolichoderus bispinosus had exclusive occurrences in smaller areas. Exclusion between dominant or subdominant species was more frequent in the upper than lower canopy. Permeable borders and territory-free spaces are important for ant species diversity, and were more frequent in the lower canopy. Here, a combination of more costly patrolling conditions and less profitable resources, such as extra-floral nectaries and trophobionts, may be the most likely cause of this pattern. The findings presented here could account for the viewpoint of some that ant mosaics exist in plantations but not necessarily in tropical forest canopies.
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spelling curtin-20.500.11937-114912017-01-30T11:25:03Z Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy Ribeiro, S. Espirito Santo, N. Delabie, J. Majer, Jonathan Panama assemblage structure animal territory formicidae semi-deciduous tropical forest competition A canopy crane was used to assess ant defensive behaviour and recruitment at baits in the Parque Natural Metropolitano, Panama. Sardine-honey baits were set within a grid of 25 paired upper and lower canopy points, for which coordinates and height were recorded. We tested the hypothesis that interactions in the ant mosaic become stronger as one moves from the lower to the upper canopy. We sampled 23 ant species, with Azteca (A. trigona, A. velox, Azteca nr. chartifex, and A. snellingi) being by far the most abundant genus, recruiting to 63% of baits and excluding all other ant genera. Camponotus (Myrmobrachys) sp. 1 also showed a statistically significant exclusion of other ant species over 95% of its occurrence. Cephalotes umbraculatus and Dolichoderus bispinosus had exclusive occurrences in smaller areas. Exclusion between dominant or subdominant species was more frequent in the upper than lower canopy. Permeable borders and territory-free spaces are important for ant species diversity, and were more frequent in the lower canopy. Here, a combination of more costly patrolling conditions and less profitable resources, such as extra-floral nectaries and trophobionts, may be the most likely cause of this pattern. The findings presented here could account for the viewpoint of some that ant mosaics exist in plantations but not necessarily in tropical forest canopies. 2013 Journal Article http://hdl.handle.net/20.500.11937/11491 http://www.myrmecologicalnews.org/cms/images/pdf/volume18/mn18_113-120_non-printable.pdf Springer fulltext
spellingShingle Panama
assemblage structure
animal territory
formicidae
semi-deciduous tropical forest
competition
Ribeiro, S.
Espirito Santo, N.
Delabie, J.
Majer, Jonathan
Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title_full Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title_fullStr Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title_full_unstemmed Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title_short Competition, resources and the ant (Hymenoptera: Formicidae) mosaic: A comparison of upper and lower canopy
title_sort competition, resources and the ant (hymenoptera: formicidae) mosaic: a comparison of upper and lower canopy
topic Panama
assemblage structure
animal territory
formicidae
semi-deciduous tropical forest
competition
url http://www.myrmecologicalnews.org/cms/images/pdf/volume18/mn18_113-120_non-printable.pdf
http://hdl.handle.net/20.500.11937/11491