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Cited by 9Insect and Arachnid Ecology and BehaviorEcology and Vegetation Dynamics StudiesResearch on scale insects

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Native and non-native sources of carbohydrate correlate with abundance of an invasive ant

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Lach, Lori, Hoffmann, Benjamin D., Moir, Melinda L.·2020·NeoBiota
DOI 10.3897/neobiota.63.57925
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Abstract

Invasive species threaten many ecological communities and predicting which communities and sites are invasible remains a key goal of invasion ecology. Although invasive ants often reach high abundances in association with plant-based carbohydrate resources, the source and provenance of these resources are rarely investigated. We characterized carbohydrate resources across ten sites with a range of yellow crazy ant abundance in Arnhem Land, Australia and New Caledonia to determine whether yellow crazy ant (Anoplolepis gracilipes) abundance and trophic position correlate with carbohydrate availability, as well as the relative importance of native and non-native sources of carbohydrates to ant diet. In both locations, measures of yellow crazy ant abundance strongly positively correlated with carbohydrate availability, particularly honeydew production, the number of tended hemipterans, and the number of plants with tended hemipterans. In Arnhem Land, 99.6% of honeydew came from native species, whereas in New Caledonia, only 0.2% of honeydew was produced by a native hemipteran. More honeydew was available in Australia due to three common large-bodied species of Auchenorrhyncha honeydew producers (treehoppers and leafhoppers). Yellow crazy ant trophic position declined with increasing yellow crazy ant abundance indicating that in greater densities the ants are obtaining more of their diet from plant-derived resources, including honeydew and extrafloral nectar. The relationships between yellow crazy ant abundance and carbohydrate availability could not be explained by any of the key environmental variables we measured at our study sites. Our results demonstrate that the positive correlation between yellow crazy ant abundance and honeydew production is not contingent upon the provenance of the hemipterans. Native sources of carbohydrate may play an underappreciated role in greatly increasing community invasibility by ants.

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Metadata

Authors
Lach, L., Hoffmann, B. D., & Moir, M. L.
Affiliations
  • The University of Western Australia (AU)
  • Commonwealth Scientific and Industrial Research Organisation (AU)
Corresponding author
Lach, Lori
ORCID
Venue
NeoBiota
Publisher
Pensoft Publishers
Published
2020-12-17
Volume
63
Pages
155-175
ISSN
  • 1314-2488 (ISSN-L)
  • 1619-0033
DOI
10.3897/neobiota.63.57925
OpenAlex
W3111245437
Cited by
9
References
0
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 2
FWCI
0.88
Type
journal article
Language
en
Open access
Licence
Locations
  • NeoBiota (publishedVersion, cc-by)
  • UWA Profiles and Research Repository (UWA) (publishedVersion, cc-by)
  • ResearchOnline at James Cook University (James Cook University) (submittedVersion)
  • ZooKeys (submittedVersion, other-oa)
  • Biodiversity Heritage Library (Smithsonian Institution) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Zenodo (CERN European Organization for Nuclear Research) (submittedVersion, cc-by)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Insect and Arachnid Ecology and Behavior
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
  • Life Sciences › Agricultural and Biological Sciences › Insect Science › Research on scale insects
Keywords
yellow crazy ant, Anoplolepis gracilipes, invasive ants, honeydew, treehoppers, leafhoppers, extrafloral nectar, invasibility, Arnhem Land, New Caledonia

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