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Data analysis shows nonhuman female mammals also live longer than males – Phys.org

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Here a male surrounded by his harem is emitting a cry to mark his territory. Elephant seals are one of the species in which females outlive males. Credit: © Isabelle CHARRIER / Neuro-PSI / CNRS Photothèque

An international team of researchers has found evidence that shows female mammals besides humans also live longer than males. In their paper published in Proceedings of the National Academy of Sciences, the group describes how they compiled and analyzed demographic data from a large number of animal populations and what they found.

Scientists have known for many years that in humans, females tend to live longer than males. The reason is still up for debate. Some suggest it is because women have two copies of the same chromosome; others believe it is because men live riskier lives; others yet argue that it is due to age-associated diseases. Whatever the reason, prior research has shown that with humans, there is a 7.8 percent gap in . In this new effort, the researchers have found evidence indicating that the same is true for most other mammals.

To better understand longevity rates for mammals in general, the researchers collected and analyzed for 101 species covering 134 populations. They also separately studied longevity in gorilla and orca populations to learn more about why there are in mammals at all.

In looking at their results, the researchers found that females outlived males in 60 percent of the species they studied. They also found that female mammals live on average 18.6 percent longer than males—a gap more than twice that of humans. The researchers also found that as a population ages, the wider the gap in longevity grows—a finding also true for humans. Prior research has shown that nine out of 10 supercentenarians are women, for example.

The researchers note that many studies into longevity in mammals have been conducted. But most were focused on a or a group of related species. They claim theirs is the widest-reaching study of its kind to date because of the large numbers of species that were included. They also note that they found that the longer a of is studied, the more accurate estimations of their longevity become. And groups that have been studied the longest show some of the biggest gaps in longevity—some as much as 20 percent.


Explore further

Why men (and other male animals) die younger: It’s all in the Y chromosome


More information:
Jean-François Lemaître et al. Sex differences in adult lifespan and aging rates of mortality across wild mammals, Proceedings of the National Academy of Sciences (2020). DOI: 10.1073/pnas.1911999117

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Citation:
Data analysis shows nonhuman female mammals also live longer than males (2020, March 24)
retrieved 24 March 2020
from https://phys.org/news/2020-03-analysis-nonhuman-female-mammals-longer.html

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Rangers' Panarin, others donate N95 masks to hospitals – National Post

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New York Rangers forward Artemi Panarin provided quite the assist by aiding frontline health care workers in the battle against the coronavirus.

Panarin purchased and arranged the delivery of 1,500 N95 masks to Hospital for Special Surgery in New York.

“We are so grateful for Artemi Panarin’s incredibly generous gift of N95 masks to HSS,” said Dr. Bryan Kelly, the surgeon-in-chief at Hospital for Special Surgery, per NHL.com.

“Along with his teammates, Panarin also created a video thanking HSS for our commitment to helping NYC during this pandemic. On behalf of every clinical staff member at HSS, we would like to offer our heartfelt thanks to Panarin for his generosity during this time. Additionally, we’d like to thank Jim Ramsay, head athletic trainer for the Rangers, for his help coordinating their efforts.”

The masks were delivered on Friday.

Panarin is not alone, as Florida Panthers goaltender Sergei Bobrovsky and New York Islanders netminder Semyon Varlamov also purchased and arranged delivery of the N95 masks to hospitals in their respective markets.

Per NHL.com, Bobrovsky reportedly donated thousands of masks to multiple hospitals in the area of Fort Lauderdale, Fla.

Varlamov joined his teammates in donating 3,000 masks to Northwell Health system on Long Island.

“A heartfelt thanks to the @NYIslanders for supporting our Northwell Health #healthcareheroes with your delivery of N95 masks this week!” Northwell Health Foundation tweeted from the @GiveToNorthwell account.

N95 masks are in demand among medical providers because they help prevent a person from inhaling small, airborne infectious particles — a primary means of transmitting the coronavirus.

As of Sunday morning, more than 1.2 million people around the world had been diagnosed with the disease, with more than 67,000 fatalities, according to Johns Hopkins University.

–Field Level Media

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Earth's crust is shaking less as people stay home – MENAFN.COM

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(MENAFN – IANS)

London, April 5 (IANS) The COVID-19 lockdowns globally have not only made air breathable or rivers clean but have also resulted in the way our Earth moves, as researchers now report a drop in seismic noise (the hum of vibrations in the planets crust) because transport networks, real estate and other human activities have been shut down.

According an article in the journal Nature, efforts to curb the spread of coronavirus mean that the planet itself is moving a little less, which could “allow detectors to spot smaller earthquakes and boost efforts to monitor volcanic activity and other seismic events”.

Vibrations caused by moving vehicles and industrial machinery produce background noise, which reduces seismologists’ ability to detect other signals occurring at the same frequency.

“A noise reduction of this magnitude is usually only experienced briefly around Christmas,” said Thomas Lecocq, a seismologist with the Royal Observatory of Belgium in Brussels which has observed the drop in seismic noise.

Data from a seismometer at the observatory show that measures to curb the spread of COVID-19 in Brussels caused human-induced seismic noise to fall by about one-third.

In Belgium, scientists report at least a 30 per cent reduction in that amount of ambient human noise since lockdown began there.

The current drop has boosted the sensitivity of the observatory’s equipment, improving its ability to detect waves in the same high frequency range as the noise, said the Nature article.

However, not all seismic monitoring stations will see an effect as pronounced as the one observed in Brussels.

According to Emily Wolin, a geologist at the US Geological Survey in Albuquerque, New Mexico, many stations are purposefully located in remote areas to avoid human noise.

“These should see a smaller decrease, or no change at all, in the level of high-frequency noise they record,” she was quoted as saying.

The fall in noise could also benefit seismologists who use naturally occurring background vibrations, such as those from crashing ocean waves, to probe Earth’s crust.

A fall in human-induced noise could boost the sensitivity of detectors to natural waves at similar frequencies

“There’s a big chance indeed it could lead to better measurements,” said Lecocq.

The reduction in seismic activity, like reduction in air pollution, also show that people are adhering to social distancing guidelines.

“From the seismological point of view, we can motivate people to say, ‘OK look, people. You feel like you’re alone at home, but we can tell you that everyone is home. Everyone is doing the same. Everyone is respecting the rules,'” Lecocq told CNN.

–IANS

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MENAFN0504202002310000ID1099973308

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Earth's crust is shaking less as people stay home – International Business Times, Singapore Edition

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The COVID-19 lockdowns globally have not only made air breathable or rivers clean but have also resulted in the way our Earth moves, as researchers now report a drop in seismic noise (the hum of vibrations in the planets crust) because transport networks, real estate and other human activities have been shut down.

According an article in the journal Nature, efforts to curb the spread of coronavirus mean that the planet itself is moving a little less, which could “allow detectors to spot smaller earthquakes and boost efforts to monitor volcanic activity and other seismic events”.

Vibrations caused by moving vehicles and industrial machinery produce background noise, which reduces seismologists’ ability to detect other signals occurring at the same frequency.

“A noise reduction of this magnitude is usually only experienced briefly around Christmas,” said Thomas Lecocq, a seismologist with the Royal Observatory of Belgium in Brussels which has observed the drop in seismic noise.

Image for Representational purpose only

Data from seismometer

Data from a seismometer at the observatory show that measures to curb the spread of COVID-19 in Brussels caused human-induced seismic noise to fall by about one-third.

In Belgium, scientists report at least a 30 per cent reduction in that amount of ambient human noise since lockdown began there.

The current drop has boosted the sensitivity of the observatory’s equipment, improving its ability to detect waves in the same high frequency range as the noise, said the Nature article.

However, not all seismic monitoring stations will see an effect as pronounced as the one observed in Brussels.

According to Emily Wolin, a geologist at the US Geological Survey in Albuquerque, New Mexico, many stations are purposefully located in remote areas to avoid human noise.

“These should see a smaller decrease, or no change at all, in the level of high-frequency noise they record,” she was quoted as saying.

The fall in noise could also benefit seismologists who use naturally occurring background vibrations, such as those from crashing ocean waves, to probe Earth’s crust.

A fall in human-induced noise could boost the sensitivity of detectors to natural waves at similar frequencies

“There’s a big chance indeed it could lead to better measurements,” said Lecocq.

The reduction in seismic activity, like reduction in air pollution, also show that people are adhering to social distancing guidelines.

“From the seismological point of view, we can motivate people to say, ‘OK look, people. You feel like you’re alone at home, but we can tell you that everyone is home. Everyone is doing the same. Everyone is respecting the rules,'” Lecocq told CNN.

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