Affiliation:
1. Department of Biology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Abstract
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.
Publisher
American Association for the Advancement of Science (AAAS)
Reference65 articles.
1. C. S. Elton The Ecology of Invasions by Animals and Plants (Wiley New York 1958)
2. H. A. Mooney and J. A. Drake Eds. Ecology of Biological Invasions of North America and Hawaii (Springer-Verlag New York 1986)
3. J. A. Drake et al. Eds. Biological Invasions: A Global Perspective (Wiley Chichester UK 1989);
4. Vitousek P. M., et al., Am. Sci. 84, 468 (1996).
5. S. L. Pimm The Balance of Nature? Ecological Issues in the Conservation of Species and Communities (Univ. of Chicago Press Chicago 1991).
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251 articles.
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