Journal
SCIENCE
Volume 331, Issue 6020, Pages 1066-1068Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1198734
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Funding
- National Research Initiative of the USDA National Institute of Food and Agriculture [2006-35302-16561, 58-6615-7-137]
- Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture, Executive Yuan, Taiwan [98AS-9.1.2-BQ-B1(1)]
- National Science Council Executive Yuan, Taiwan [NSC97-2917-I-002-103]
- Division Of Environmental Biology
- Direct For Biological Sciences [1020652] Funding Source: National Science Foundation
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The fire ant Solenopsis invicta is a significant pest that was inadvertently introduced into the southern United States almost a century ago and more recently into California and other regions of the world. An assessment of genetic variation at a diverse set of molecular markers in 2144 fire ant colonies from 75 geographic sites worldwide revealed that at least nine separate introductions of S. invicta have occurred into newly invaded areas and that the main southern U.S. population is probably the source of all but one of these introductions. The sole exception involves a putative serial invasion from the southern United States to California to Taiwan. These results illustrate in stark fashion a severe negative consequence of an increasingly massive and interconnected global trade and travel system.
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