Scientists at the University of Georgia have been studying the behavior of Jorō spiders, a venomous flying arachnid species invading the southeastern United States. They found that the spiders remain surprisingly calm under stress, potentially making them harder to identify in urban environments. The spiders’ ability to stay cool under pressure is attributed to a freezing response identified in a previous study. In experiments, the researchers found that Jorō spiders stayed still for hours and did not struggle when physically restrained, unlike other closely related arachnid species.
Since their initial sighting in Georgia in 2013 and 2014, the population of Jorō spiders has expanded rapidly, with reports of sightings in neighboring states and beyond. A study by researchers from Clemson University suggests that the spiders may be found in most of the eastern United States. This rapid spread has raised concerns about the impact of the invasive species on local wildlife and ecosystems.
Despite their alarming appearance, Jorō spiders can be beneficial in controlling insect populations. However, their presence in urban areas poses a challenge for experts trying to manage the invasion. Understanding the behavior and stress response of these spiders can help researchers develop strategies for dealing with the spread of the species. Further studies are ongoing to learn more about the biology and behavior of Jorō spiders as they continue to establish themselves in new regions.
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