… 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.

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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