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… It seems like even though their heart rate does accelerate, it’s much more even (than the other spider’s heart rates),” he added. To test the spiders’ heart rates, Davis and study coauthor Christina Vu, who was a University of Georgia undergraduate student of entomology at the time, wrangled 79 spiders from two different genera. The Jorō spiders (top left) had to be carefully restrained using pins in order to measure the arachnids' heart rates. They compared the spiders’ resting heart rates to their heart rates during restraint and found all the spiders’ heart rates increased, but the Argiope spiders, which are known to avoid urban settings, had many more spikes as they struggled to run away, according to the research. … To observe spider heart rates, they must be restrained in the first place, which causes a heart rate elevation,” he said.
Persons: I’ve, ’ ”, Andy Davis, panicking, Davis, Christina Vu, , ” Vu, Jorōs, , , Floyd Shockley, ” Shockley, Jay Stafstrom, ” Stafstrom, they’re Organizations: CNN —, University of Georgia, University of Georgia’s Odum, of Ecology, University, Georgia, Smithsonian National Museum of, Cornell University Locations: United States, Asia, Georgia, West Virginia , Tennessee, Maryland, Canada, arachnophobes, Washington , DC, Ithaca , New York
Typical spiders — and most creatures — tend to find the noise and wind disturbance from nearby busy roads to be too stressful, but the Jorō spider doesn’t seem to mind much, according to a new study published in Arthropoda on February 13. University of Georgia ecology students and study coauthors Kade Stewart, Caitlin Phelan and Alexa Schultz handle a Jorō spider. What to do when you come across a Jorō spiderAs the nonnative Jorō spider continues to spread in the region, the spiders pose a threat to native species that are beneficial to the environment. While conducting the study, the researchers found evidence of the Jorō spiders coexisting with native spiders, Davis said. And the Jorō spiders eat species that are good and bad for the environment, including the infamous lantern fly, he added.
Persons: , Andy Davis, Kade Stewart, Caitlin Phelan, Alexa Schultz, Davis, Floyd Shockley, Shockley, ” Shockley, , They’re, they’re Organizations: CNN, University of Georgia’s Odum, of Ecology, University of Georgia, Entomology, Smithsonian National Museum of Locations: United States, Arthropoda, Washington ,
Joro spiders are the size of your palm. “If you’re an arachnophobe, they’re the stuff of your nightmares,” said Andy Davis, a biologist at the University of Georgia who studies them. But, Dr. Davis said, joros are “gentle giants” that are prone to shyness and are more inclined to freeze than to fight. By comparison, smaller spiders appeared relatively unfazed, indicating that even big, scary spiders can be scaredy-cats. Joros were first spotted in northeastern Georgia in 2013; Dr. Davis’s best guess is that the spiders’ eggs arrived in shipping containers, because they tended to show up around highways.
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