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☆ New study finds invasive Jorō spiders ‘keep cool under pressure’
▼ + stars: | 2024-08-12 | by ( Taylor Nicioli | ) edition.cnn.com time to read: +9 min

… 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

☆ How a group of butterflies flew 2,600 miles across the Atlantic Ocean without stopping
▼ + stars: | 2024-07-01 | by ( Taylor Nicioli | ) edition.cnn.com time to read: +7 min

Scientists have now found evidence that a group of the winged travelers flew over 2,600 miles (about 4,200 kilometers) across the Atlantic Ocean without stopping, according to a new study published June 25 in the journal Nature Communications. The insects, which are not usually found in South America, were worn out with holes and tears in their wings. Tracking a butterflyResearchers took a few crucial steps to confirm these out-of-place butterflies really did travel across the ocean. By this method, the scientists concluded the butterflies’ birthplace to be in either Western Europe, North Africa or West Africa, she added. The researchers hope to use the same techniques to investigate the migration patterns of other species of butterflies, she added.

Persons: Dr, Gerard Talavera, Vanessa cardui, ”, Talavera, ” Talavera, “, Floyd Shockley, Shockley, Megan Reich, ” Reich, ” Shockley Organizations: CNN, Nature Communications, Spanish National Research Council, Botanical Institute of Barcelona, Migration, Smithsonian National Museum of, University of Ottawa Locations: Guiana, South America, Europe, Saharan Africa, Washington , DC, North America, Ontario, Western Europe, North Africa, West Africa, Africa

☆ Invasive Jorō spiders can live well with humans, according to new study
▼ + stars: | 2024-02-25 | by ( Taylor Nicioli | ) edition.cnn.com time to read: +6 min

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 ,

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