The control of Yellow Crazy Ants (Anoplolepis gracilipes). An empirical study

Stewart, P. Le C. F., Richards, G., Bernard, A. and Wickenden, J. (2014) The control of Yellow Crazy Ants (Anoplolepis gracilipes). An empirical study. International Journal of Ecology and Development, 27 1: 56-63.

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Name Description MIMEType Size Downloads
Author Stewart, P. Le C. F.
Richards, G.
Bernard, A.
Wickenden, J.
Title The control of Yellow Crazy Ants (Anoplolepis gracilipes). An empirical study
Formatted title
The control of Yellow Crazy Ants (Anoplolepis gracilipes). An empirical study
Journal name International Journal of Ecology and Development
ISSN 0972-9984
Publication date 2014-01
Sub-type Article (original research)
Open Access Status
Volume 27
Issue 1
Start page 56
End page 63
Total pages 8
Place of publication Roorkee, Uttarakhand, India
Publisher Centre for Environment, Social and Economic Research Publications
Collection year 2015
Language eng
Formatted abstract
It is acknowledged in the scientific community that Yellow Crazy Ants (Anoplolepis gracilipes) are a key threatening process to Christmas Island’s biodiversity, threatening the islands native species and detrivore land crab populations, especially the Red Crab (Gecarcoidea natalis). Since their introduction to the island between 1915 and 1935 these tramp ants have increased in number and density forming super-colonies resulting in substantial Red Crab and other native invertebrate mortalities. To try to control and contain this invasive specie the Australian Commonwealth Government has financially and physically exerted substantial effort to control impacts of this specie using fipronil by hand and aerial baiting. Despite this intensive baiting campaign, the distribution of YCA’s has continued to increase with super-colonies now occurring throughout the island. Present management and baiting regimes of YCA follow the rationale that when YCA reach super-colony density they will have displaced all other invertebrates and therefore no none-target native species will be impacted by the use of fipronil. This results in the management of super-colonies only once they have developed or reactive management. An independent trial was undertaken between 2009 and 2012 using Disodium Octaborate Tetrahydrate (DOT) to trial an alternative bait and baiting method to control YCA that is more environmentally friendly and a more proactive management strategy than is presently in use on Christmas Island. From the results of this trial it is very clear that the bait has had a significant impact on Yellow Crazy Ants, which is supported by follow-up monitoring post DOT trial in 2012 showing evidence of the effectiveness of the bait and baiting method in controlling YCA by preventing super-colony development.
Keyword Yellow Crazy Ants
Disodium octaborate tetrahydrate
Aerial baiting
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Official 2015 Collection
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Created: Fri, 18 Oct 2013, 10:18:21 EST by Philip Stewart on behalf of School of Geography, Planning & Env Management