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Science 30 October 1998:
Vol. 282. no. 5390, pp. 949 - 952
DOI: 10.1126/science.282.5390.949
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Reports
Loss of Intraspecific Aggression in the Success of a Widespread Invasive Social Insect
David A. Holway,
*
Andrew V. Suarez,
Ted J. Case
Despite the innumerable ecological problems and large economic
costs associated with biological invasions, the proximate causes of
invasion success are often poorly understood. Here, evidence is
provided that reduced intraspecific aggression and the concomitant abandonment of territorial behavior unique to introduced populations of
the Argentine ant contribute to the elevated population densities directly responsible for its widespread success as an invader. In the
laboratory, nonaggressive pairs of colonies experienced lower mortality
and greater foraging activity relative to aggressive pairs. These
differences translated into higher rates of resource retrieval, greater
brood production, and larger worker populations.
Department of Biology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
*
To whom correspondence should be addressed. E-mail:
dholway{at}biomail.ucsd.edu
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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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- F. J. Guerrieri and P. d'Ettorre (2008)
J. Exp. Biol.
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- Intraspecific competition influences the symmetry and intensity of aggression in the Argentine ant.
- M. L. Thomas, N. D. Tsutsui, and D. A. Holway (2005)
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Genetics
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- Genetic diversity, asymmetrical aggression, and recognition in a widespread invasive species.
- N. D. Tsutsui, A. V. Suarez, and R. K. Grosberg (2003)
PNAS
100, 1078-1083
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- Evolution of supercolonies: The Argentine ants of southern Europe.
- T. Giraud, J. S. Pedersen, and L. Keller (2002)
PNAS
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- Evolution of supercolonies: The Argentine ants of southern Europe.
- T. Giraud, J. S. Pedersen, and L. Keller (2002)
PNAS
99, 6075-6079
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- Reduced genetic variation and the success of an invasive species.
- N. D. Tsutsui, A. V. Suarez, D. A. Holway, and T. J. Case (2000)
PNAS
97, 5948-5953
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