Please use this identifier to cite or link to this item:
Title: Supercolony mosaics: two different invasions by the yellow crazy ant, 'Antoplolepis gracilipes', on Christmas Island, Indian Ocean
Contributor(s): Thomas, Melissa L (author); Becker, Katrin (author); Abbott, Kirsti  (author); Feldhaar, Heike (author)
Publication Date: 2009
DOI: 10.1007/s10530-009-9473-9
Handle Link:
Abstract: Invasive species are one of the main reasons for the ongoing global loss of biodiversity. 'Anoplolepis gracilipes' is an invasive ant that has recently received significant attention due to its negative effect on the native fauna and flora of Christmas Island, Indian Ocean. This species has contributed to a drastic change in the structure of the Christmas Island rainforest through its negative impact on the island's endemic red land crab, the dominant consumer on the island's forest floor. In this study, we investigate the population structure of 'A. gracilipes' on Christmas Island in order to determine whether multiple introductions occurred on the island and how they correspond to known infestations. We genotyped 578 individuals collected from 50 nests across the Island. We identify two distinct subgroups in the population that represent two different supercolonies. These supercolonies are interspersed across the island, however both nuclear (microsatellites) and mitochondrial markers strongly suggest that there is no gene flow between the two colonies. Significant heterozygote excess within the entire sampling area, with all but one worker examined being heterozygous for all seven microsatellite loci, suggests an unusual reproductive system in these ants. Our results are consistent with recent sociogenetic findings in a population of 'A. gracilipes' in Northern Borneo.
Publication Type: Journal Article
Source of Publication: Biolgical Invasions, 12(3), p. 677-687
Publisher: Springer Netherlands
Place of Publication: The Netherlands
ISSN: 1573-1464
Field of Research (FOR): 050103 Invasive Species Ecology
060808 Invertebrate Biology
060202 Community Ecology (excl Invasive Species Ecology)
HERDC Category Description: C2 Non-Refereed Article in a Scholarly Journal
Statistics to Oct 2018: Visitors: 818
Views: 867
Downloads: 0
Appears in Collections:Journal Article
School of Environmental and Rural Science

Files in This Item:
2 files
File Description SizeFormat 
Show full item record


checked on Nov 26, 2018

Page view(s)

checked on May 3, 2019
Google Media

Google ScholarTM



Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.