(Phys.org)―A team of scientists conducting a recent biodiversity survey in the ancient church forests of Ethiopia made an unexpected discovery—a rather infamous ant species (Lepisiota canescens) displaying signs of supercolony formation. According to D. Magdalena Sorger, a post-doctoral researcher with the North Carolina Museum of Natural Sciences and a key member of the team, the discovery is significant for two reasons. First, supercolony formation in ants is rare, with documented cases of only around 20 species worldwide. Second, other species in the Lepisiota genus have recently made headlines as worrisome invasive species, one in South Africa’s Kruger National Park and another that shut down Australia’s Darwin Port for several days. The team’s findings, were published in Insectes Sociaux in November.

In Ethiopia, forests frequently surround Orthodox churches, some of which are more than 1,500 years old. These forests range in size from only a few hectares to more than 400 (~1,000 acres) and can be considered relict oases within largely barren land and agricultural fields. While L. canescens is native to the general region, it is now moving in large numbers into disturbed habitat like some of the more degraded church forests, but also beyond forest boundaries, into neighboring agricultural fields, and along recently constructed roads and other urban structures.

And that might be just the beginning, says lead author Sorger, who worked on this study while at North Carolina State University. “The species we found in Ethiopia may have a high potential of becoming a globally . Invasive species often travel with humans, so as tourism and global commerce to this region of Ethiopia continues to increase, so will the likelihood that the ants could hitch a ride, possibly in plant material or even in the luggage of tourists. All it takes is one pregnant queen. That’s how fire ants started!”

Continue reading this story on Phys.org


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