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- Title
Loss of intraspecific aggression in the success of a widespread invasive social insect
- Authors
Holway DA; Suarez AV; Case TJ
- 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.
- Publication
Science (New York, N.Y.), 1998, Vol 282, Issue 5390, p949
- ISSN
1095-9203
- Publication type
Journal Article
- DOI
10.1126/science.282.5390.949