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Title

Exploitative strategies of the invasive Argentine ant (Linepithema humile) and native ant species in a southern Spanish pine forest

AuthorsCarpintero, S.; Retana, Javier; Cerdá, Xim ; Reyes-López, J.; Arias de Reyna, Luis
Issue Date2007
PublisherEntomological Society of America
CitationEnvironmental Entomology 36: 1100- 1111 (2007)
AbstractThe Argentine ant, Linepithema humile (Mayr, 1868), is displacing native ant species in Doñana National Park (Spain). This paper discusses the results of experiments aimed at analyzing exploitation competition between the invading species and other ant species in a park community. The Argentine ant was found to implement several strategies favoring its success in exploitation competition: mass recruitment, use of various microhabitats (on the ground and in trees), and activity over a wide range of temperatures. Although these strategies were not exclusive to L. humile, their joint use, together with the large number of workers forming each >unicolony,> conferred a clear advantage for resource exploitation. Some native species were more severely affected than others by the presence of L. humile in terms of both abundance and behavior. The worst affected species were those whose ecological characteristics were similar to those of the Argentine ant, e.g., Pheidole pallidula (Nylander, 1849); the species least affected was Cataglyphis floricola Tinaut, 1993, possibly because of its subordinate and thermophilous nature (little overlap of daily activity rhythms with the exotic species). © 2007 Entomological Society of America.
URIhttp://hdl.handle.net/10261/63390
DOI10.1603/0046-225X(2007)36[1100:ESOTIA]2.0.CO;2
Identifiersdoi: 10.1603/0046-225X(2007)36[1100:ESOTIA]2.0.CO;2
issn: 0046-225X
Appears in Collections:(EBD) Artículos
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