Dolphins slow down to avoid “bending”

November 24th – Before diving, dolphins save oxygen and slow down the heart to avoid decompression sickness, sometimes called a “bend.”

A new study published in the journal Frontiers in Physiology on Tuesday allows dolphins to adjust their heart rate according to how long they spend underwater.

In this study, researchers collaborated with three bottlenose dolphin males whose handlers were trained to hold their breath for various times.

Scientists used a custom device to monitor the dolphin’s breathing, and the team installed an electrocardiogram sensor to track their heart rate.

“We trained dolphins to hold long breaths, short breaths, and whatever they wanted to do,” Andreas Falman said in a news release.

“When I was asked to hold my breath, my heart rate dropped before or shortly after I started holding my breath. Also, dolphins have a longer heart rate when preparing for a longer breath hold than other breath holds. I also observed that it was faster and even lower. ” Fahlman, a researcher at Fundación Oceanogràfic in Valencia, Spain, said.

Researchers have compared the ability of dolphins to slow down the heart rate and the ability of humans to slow down breathing.

“This saves oxygen during the dive and may be the key to avoiding diving-related problems such as decompression sickness,” says Fahlman.

Whales and dolphins studying how to prepare and perform diving, both long and short, helps marine biologists and conservationists better understand the effects of human activity and noise pollution on the behavior and health of marine mammals. Useful.

“This ability to regulate heart rate is important to avoid decompression sickness, and if this mechanism fails when suddenly exposed to abnormal sounds, avoid sudden major disturbances and instead over time. You need to slowly increase the noise level to minimize stress, “Fahlman said. Said. “In other words, our research may provide a very simple mitigation method to allow humans and animals to safely share the ocean.”

Researchers have stated that this study is only possible thanks to the relationship between captive dolphins and their trainers.

“When training dolphins to participate in scientific research, the close relationship between trainers and animals is very important,” said Siegfried & Lloyds Secret Garden and dolphin habitat training in Las Vegas Mirage. Said Andy Jabas, who helped.

“This bond of trust has given us a safe environment for dolphins to become accustomed to special equipment and learn to hold their breath in a fun and exciting training environment. All dolphins are actively researching. Participate and leave at any time. “

Dolphins slow down to avoid “bending”

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