Sunday, July 12, 2020
Home USA Elephants May Sleep Less than any Other Mammal: Study

Elephants May Sleep Less than any Other Mammal: Study

The researchers monitored two free-roaming female African elephants in Botswana's Chobe National Park for 35 days

There’s an old saying that elephants never forget. You also can say they almost never sleep.

Scientists on Wednesday said a first-of-its-kind study tracking the sleep behavior of wild elephants found the world’s largest land mammal sleeps two hours per day on average, and some days not at all, and does so mostly standing up.

Check out NewsGram for latest international news updates.

This represented the shortest-known sleep time of any mammal. Previos research showed captive elephants got four to six hours daily.

“Sleep needs to be studied in an animal’s natural environment if we are truly to understand it,” said Paul Manger, a research professor in the School of Anatomical Sciences at the University of the Witwatersrand in South Africa who led the study published in the journal PLOS ONE.

The researchers monitored two free-roaming female African elephants in Botswana’s Chobe National Park for 35 days. They got data to track sleep accurately from a wristwatch-sized device implanted under the skin of the trunk that was not harmful to the animals. They used a satellite-tracking collar with a gyroscope to monitor their location and sleep position.

NewsGram brings to you top news around the world today.

“We do feel these two elephants are representative of the broader population,” Manger said, adding he hoped future research could be done with larger numbers of wild elephants, including males.

The elephants sometimes went up to 46 hours without sleep while walking distances of about 19 miles (30 km), possibly to avoid threats like lions or human poachers.

They typically slept somewhere between 2 a.m. and 6 a.m. After a sleepless night, they had no extra sleep the next night.

The maximum sleep recorded was five hours in a day. They spent just 17 percent of their sleeping time lying down.

The next shortest sleepers among mammals may be domestic horses, which get under three hours daily. Some mammals have been shown in captivity to sleep most of the day, including the little brown bat (19 hours), opossum (18 hours) and armadillo (17 hours), Manger said.

People average roughly six to nine hours, Manger said.

The elephants appeared to experience rapid eye movement (REM) sleep, associated with more dreaming and body movements and loss of muscle tone, only every three to four nights.

“REM sleep is often associated with the consolidation of memories. However, we do know elephants have good memories, so this finding contradicts one central hypothesis of REM sleep function,” Manger said. (VOA)

STAY CONNECTED

18,990FansLike
362FollowersFollow
1,784FollowersFollow

Most Popular

Pandemic’s Impact on People With Disabilities

Often reliant on a robust caregiving and support network, people with disabilities (PwDs) are a community hit hard during the lockdown and resulting operational...

Investments in Family Planning During COVID-19

Highlighting the need to focus on sexual and reproductive health rights of girls and women, a policy paper released by Population Foundation of India...

Strokes Linked to Covid-19 Have Higher Mortality Rate, Says Research

An international team of researchers has found that acute ischemic stroke (AIS) linked to Covid-19 is more severe, leads to worse functional outcomes, and...

World Population Day: Bringing Back The Debate on Family Planning

Family planning is central to gender equality and women empowerment, and it is a key factor in reducing poverty. Millions of girls and women...

Zuckerberg Integrates Apps with WhatsApp

WhatsApp has so far been a great experience for billions of users globally where there are no ads in-between chats, no distractions like promoted...

The Marriage of Shiva and Parvati: An Iconic Tale

As the wedding season is upon us, let's know more about the iconic marriage and procession of Lord Shiva and Parvati. Shiva and Parvati It is...

Ali Fazal Stands For Gender Equality

Actor Ali Fazal is all for gender equality, and wants the issue of domestic violence to be destigmatized. He had earlier joined hands with actor-filmmaker...

High Blood Sugar Increases Covid-19 Death Risk: Study

Covid-19 patients with abnormally high blood sugar are at an increased risk of severe complications and more than twice as likely to face death,...

Recent Comments