Humans eating wild mammals into extinction: study

October 20, 2016

Paris, Oct 20: Some 300 wild mammal species in Asia, Africa and Latin America are being driven to extinction by humanity's voracious appetite for bushmeat, according to a world-first assessment released today.

mammals

The species at risk range from rats to rhinoceros, and include docile, ant-eating pangolins as well as flesh-ripping big cats.

The findings, published in the journal Royal Society Open Science, are evidence of a "global crisis" for warm-blooded land animals, 15 top conservation scientists concluded.

"Terrestrial mammals are experiencing a massive collapse in their population sizes and geographical ranges around the world," the study warned.

This decline, it said, was part of a larger trend known as a "mass extinction event," only the sixth time in half a billion years that Earth's species are dying out at more than 1,000 times the usual rate.

Besides eating them, humans are robbing mammals of their natural habitats through agriculture and urbanisation, and decimating them through pollution, disease and climate change.

According to the Union for the Conservation of Nature's (IUCN) Red List of endangered species, a quarter of 4,556 land mammals assessed are on the road to annihilation.

For 301 of these threatened species, "hunting by humans" - mainly for food, but also as purported health and virility boosters, and trophies such as horns or pelts - is the main threat, according to the comprehensive review of scientific literature.

The likelihood of extinction, the team found, depends on body size: the bigger the animals, the greater the danger.

More than 100 primates, including gorillas and snub-nosed monkeys, and dozens of hooved animals from oxen to antelope, are at dire risk from hunting.

"These species will continue to decline unless there is major global action to save them," Bill Ripple, a professor at Oregon State University and lead author of the study, told AFP.

All 301 species identified are found exclusively in developing countries, with the highest concentration in southeast Asia (113), followed by Africa (91), the rest of Asia (61) and Latin America (38).

The countries with the most native species under siege from hunting were Madagascar (46), Indonesia (37), the Philippines (14) and Brazil (10).

The scale of the problem is daunting: some 89,000 tonnes of wild meat - with a market value of about USD 200 million (180 million euros) - is butchered every year from the Brazilian Amazon alone, the study found.

On current trends, the prospects for these and other mammals is not bright, the authors said.

"Forty of these species were already classed as critically endangered by 1996, indicating that there has been little or no conservation progress in reversing their fate," they note.

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Agencies
March 18,2020

Thiruvananthapuram, Mar 18: To raise awareness about protective measures against coronavirus, Kerala Police released a dance video on the State Police Media Centre's Facebook page promoting the washing of hands, here on Tuesday.

In the video, the police officers were seen dancing to the tunes of Kalakkatha from the Malayalam action-drama thriller Ayyappanum Koshiyum while demonstrating the right technique for washing hands.

The video gained over 27,000 likes and over 2,400 comments and more than 33,000 netizens shared the video.

The video has received a positive response with users congratulating Kerala Police for the initiative.

"Congrats Kerala police media for this kind of initiative," one user commented on Facebook. Another user thanked the police in the comments section saying, "Super super thanks to KL (Kerala) police."

The number of people who have tested positive for the coronavirus in Kerala is 25.

The total number of confirmed COVID-19 cases in India has reached 147, including 122 Indians and 25 foreign nationals, said the Ministry of Health and Family Welfare earlier today.

Globally, the virus has infected more than 184,000 people and killed more than 7500, as per the data available on the World Health Organisation website.

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Agencies
March 7,2020

New Delhi, Mar 7: The Union government has issued a Global Invite for Expression of Interest for disinvestment in Bharat Petroleum Corporation Limited (BPCL) from prospective bidders with a minimum net worth of $10 billion as of Saturday.

The EoI submissions can be made till May 2, whereas investor queries will be entertained till April 4.

Another condition pertains to a maximum of four members are permitted in a consortium, and the lead member must hold 40 per cent in proportion. Other members of the consortium must have a minimum $1 billion net worth.

The EOI allows changes in the consortium within 45 days, though the lead member cannot be changed.

The GoI proposes to disinvest its entire shareholding in BPCL comprising 1,14,91,83,592 equity shares held through the Ministry of Petroleum and Natural Gas, which constitutes 52.98 per cent of BPCL's equity share capital, along with the transfer of management control to the strategic buyer (except BPCL's equity shareholding of 61.65 per cent in Numaligarh Refinery Limited (NRL) and management control thereon).

The shareholding of BPCL in NRL will be transferred to a Central Public Sector Enterprise operating in the oil and gas sector under the Ministry and accordingly is not a part of the proposed transaction.

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News Network
May 7,2020

Toronto, May 7: Scientists have uncovered how bats can carry the MERS coronavirus without getting sick, shedding light on what triggers coronaviruses, including the one behind the COVID-19 pandemic, to jump to humans.

According to the study, published in the journal Scientific Reports, coronaviruses like the Middle East respiratory syndrome (MERS) virus, and the COVID19-causing SARS-CoV-2 virus, are thought to have originated in bats.

While these viruses can cause serious, and often fatal disease in people, bats seem unharmed, the researchers, including those from the University of Saskatchewan (USask) in Canada, said.

"The bats don't get rid of the virus and yet don't get sick. We wanted to understand why the MERS virus doesn't shut down the bat immune responses as it does in humans," said USask microbiologist Vikram Misra.

In the study, the scientists demonstrated that cells from an insect-eating brown bat can be persistently infected with MERS coronavirus for months, due to important adaptations from both the bat and the virus working together.

"Instead of killing bat cells as the virus does with human cells, the MERS coronavirus enters a long-term relationship with the host, maintained by the bat's unique 'super' immune system," said Misra, one of the study's co-authors.

"SARS-CoV-2 is thought to operate in the same way," he added.

Stresses on bats, such as wet markets, other diseases, and habitat loss, may have a role in coronavirus spilling over to other species, the study noted.

"When a bat experiences stress to their immune system, it disrupts this immune system-virus balance and allows the virus to multiply," Misra said.

The scientists, involved in the study, had earlier developed a potential treatment for MERS-CoV, and are currently working towards a vaccine against COVID-19.

While camels are the known intermediate hosts of MERS-CoV, they said bats are suspected to be the ancestral host.

There is no vaccine for either SARS-CoV-2 or MERS, the researchers noted.

Follow latest updates on the COVID-19 pandemic here

"We see that the MERS coronavirus can very quickly adapt itself to a particular niche, and although we do not completely understand what is going on, this demonstrates how coronaviruses are able to jump from species to species so effortlessly," said USask scientist Darryl Falzarano, who co-led the study.

According to Misra, coronaviruses rapidly adapt to the species they infect, but little is known on the molecular interactions of these viruses with their natural bat hosts.

An earlier study had shown that bat coronaviruses can persist in their natural bat host for at least four months of hibernation.

When exposed to the MERS virus, the researchers said, bat cells adapt, not by producing inflammation-causing proteins that are hallmarks of getting sick, but instead by maintaining a natural antiviral response.

On the contrary, they said this function shuts down in other species, including humans.

The MERS virus, the researchers said, also adapts to the bat host cells by very rapidly mutating one specific gene.

These adaptations, according to the study, result in the virus remaining long-term in the bat, but being rendered harmless until something like a disease, or other stressors, upsets this balance.

In future experiments, the scientists hope to understand how the bat-borne MERS virus adapts to infection and replication in human cells.

"This information may be critical for predicting the next bat virus that will cause a pandemic," Misra said.

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