Chinese Paddlefish and Wild Yangtze Sturgeon Extinct

 A file photo from April 29, 2007, shows a marine official recovering a dead Chinese sturgeon in the Yangtze River. (Reuters)
A file photo from April 29, 2007, shows a marine official recovering a dead Chinese sturgeon in the Yangtze River. (Reuters)
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Chinese Paddlefish and Wild Yangtze Sturgeon Extinct

 A file photo from April 29, 2007, shows a marine official recovering a dead Chinese sturgeon in the Yangtze River. (Reuters)
A file photo from April 29, 2007, shows a marine official recovering a dead Chinese sturgeon in the Yangtze River. (Reuters)

The extinction of the Chinese Paddlefish and wild Yangtze Sturgeon, declared by the International Union for Conservation of Nature (IUCN), unleashed a torrent of comments on China's social media platforms on Friday urging more environmental protection.

The IUCN's latest list of threatened species, published on its website on Thursday, showed that 100% of the world's remaining 26 sturgeon species are now at risk of extinction, up from 85% in 2009.

"The assessments are based on new calculations which show their decline over the past three generations to be steeper than previously thought," the conservation group said, adding that the reassessment had also confirmed the extinction of the Chinese Paddlefish.

Both the Chinese Paddlefish and the Yangtze Sturgeon were common species in the Yangzte river basin which has been plagued by heavy shipping traffic, overfishing and water pollution.

The topic was one of the most discussed on China's Weibo, a social media platform similar to Twitter, on Friday.

"A biological population that lived for 150 million years was actually made extinct by modern civilization? I want to ask: where is our civilization?" one user called Snow Mountain said.

The Chinese Paddlefish was one of the world's biggest fresh water fish species and could grow up to 7 meters (yards) in length. The IUCN first declared it "critically endangered" in 1996.

The Yangzte Sturgeon, which could grow up to 8 meters (yards), was highly sensitive to increased noise on the river. Its meat was considered a delicacy in China and it was also fished as a source of caviar.

The country has a breeding program for the sturgeons but has not been successful at maintaining them in the wild. China implemented a fishing ban in some parts of the Yangzte river in 2021.

"Everyone, support the ban on fishing in the Yangtze River, and protect the habitats that are still in the Yangtze River," a user called Lychee said.



French Scientists Find New Blood Type in Guadeloupe Woman

A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type. (AFP)
A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type. (AFP)
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French Scientists Find New Blood Type in Guadeloupe Woman

A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type. (AFP)
A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type. (AFP)

A French woman from the Caribbean island of Guadeloupe has been identified as the only known carrier of a new blood type, dubbed "Gwada negative," France's blood supply agency has announced.

The announcement was made 15 years after researchers received a blood sample from a patient who was undergoing routine tests ahead of surgery, the French Blood Establishment (EFS) said on Friday.

"The EFS has just discovered the 48th blood group system in the world!" the agency said in a statement on social network LinkedIn.

"This discovery was officially recognized in early June in Milan by the International Society of Blood Transfusion (ISBT)."

The scientific association had until now recognized 47 blood group systems.

Thierry Peyrard, a medical biologist at the EFS involved in the discovery, told AFP that a "very unusual" antibody was first found in the patient in 2011.

However, resources at the time did not allow for further research, he added.

Scientists were finally able to unravel the mystery in 2019 thanks to "high-throughput DNA sequencing", which highlighted a genetic mutation, Peyrard said.

The patient, who was 54 at the time and lived in Paris, was undergoing routine tests before surgery when the unknown antibody was detected, Peyrard said.

This woman "is undoubtedly the only known case in the world," said the expert.

"She is the only person in the world who is compatible with herself," he said.

Peyrard said the woman inherited the blood type from her father and mother, who each had the mutated gene.

The name "Gwada negative", which refers to the patient's origins and "sounds good in all languages", has been popular with the experts, said Peyrard.

The ABO blood group system was first discovered in the early 1900s. Thanks to DNA sequencing, the discovery of new blood groups has accelerated in recent years.

Peyrard and colleagues are now hoping to find other people with the same blood group.

"Discovering new blood groups means offering patients with rare blood types a better level of care," the EFS said.