Invasive ants territorial when neighbors are not kin

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Map showing location of large supercolony (yellow dots) Lake Hodges supercolony (red dots) and observation sites (green triangles) north of San Diego. Map Credit: David Holway UCSD
Map showing location of large supercolony (yellow dots), Lake Hodges supercolony (red dots) and observation sites (green triangles) north of San Diego. Map Credit: David Holway, UCSD

A study led by University of California, San Diego biologists shows that invasive Argentine ants appear to use genetic differences to distinguish friend from foe, a finding that helps to explain why these ants form enormous colonies in California.


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