Giant fish species that survived 150 million years declared extinct


Giant fish species that survived 150 million years declared extinct



giant-chinese-paddlefish.jpg 

A model of a giant Chinese paddlefish is seen on display in Chongqing, China. 
Beijing — Scientists say a giant fish species that managed to survive at least 150 million years has been completely wiped out by human activity. Research published in the Science of The Total Environment this week says the giant Chinese paddlefish, also known as the Chinese swordfish, is officially extinct.
The monster fish, one of the largest freshwater species in the world with lengths up to 23 feet, was once common in China's Yangtze River. Due to its speed it was commonly referred to in China as the "water tiger."
Zeb Hogan, a fish expert at the University of Nevada, Reno, told National Geographic that it was "very sad" to see the "definitive loss of a very unique and extraordinary animal, with no hope of recovery."
According to the researchers, no giant paddlefish have been sighted in the Yangtze since 2003, and there are none in captivity. They estimate that the last of the fish likely died between 2005 and 2010.
A graphic provided by the Science of The Total Environment report in January 2020 shows a timeline depicting the depletion of the giant Chinese paddlefish species in the Yangtze River. Science of The Total Environment
The species had been deemed "functionally extinct," or unable to reproduce enough to maintain itself, since 1993.
The main causes of the ancient species' demise have been listed as over-fishing and the construction of a major dam in 1981 that split the Yangtze, and the Chinese paddlefish population along with it, in two.
The 3,900 mile Yangtze River ecosystem has seen half of the 175 species unique to its waters go extinct, according to Chinese media.
Two other species native to the river have also been declared functionally extinct: the reeves shad and the Yangtze dolphin.
Last week China announced a 10-year fishing ban on some areas of the Yangtze in a bid to protect its beleaguered biodiversity.

MMW

Comments

Post a Comment

Popular posts from this blog

That Uplifting Tweet You Just Shared? A Russian Troll Sent It

Image
Here’s what Russia’s 2020 disinformation operations look like, according to two experts on social media and propaganda. By   DARREN LINVILL   &   PATRICK WARREN Internet trolls don’t troll. Not the professionals at least. Professional trolls don’t go on social media to antagonize liberals or belittle conservatives. They are not narrow minded, drunk or angry. They don’t lack basic English language skills. They certainly aren’t  “somebody sitting on their bed that weighs 400 pounds,”  as the president once put it. Your stereotypical trolls do exist on social media, but the amateurs aren’t a threat to Western democracy. Professional trolls, on the other hand, are the tip of the spear in the new digital, ideological battleground. To combat the threat they pose, we must first understand them — and take them seriously. MORE: https://www.rollingstone.com/politics/politics-features/russia-troll-2020-election-interference-twitter-916482/ Posted by Jamie B.
Read more

The Nightmare Scenario That Keeps Election Lawyers Up At Night -- And Could Hand Trump A Second Term

Image
The Nightmare Scenario That Keeps Election Lawyers Up At Night -- And Could Hand Trump A Second Term   (Photo: Photos: Getty Images) Americans will almost certainly go to bed on Nov. 3 without knowing who won the presidential election. Since millions of people will vote by mail, constraints on time and resources will slow ballot counting into potentially a weeks-long process. Voting patterns suggest it’s likely that President  Donald Trump  could end Election Day in the lead in certain key states, only to be overtaken by Democratic opponent  Joe Biden  when more votes are tallied.  This could create a nightmare scenario during the three months stretching from Election Day to the Jan. 20 inauguration: a battle on the state and congressional level over who is the legitimate winner. This could include Congress reconvening on Jan. 6, presided over by Vice President  Mike Pence , with no consensus over its potential role in choosing the next president. This is arguably the most likely of th
Read more

Philosophical Question #14 – Lifestyle Choices

Image
Here is an interesting question in my list of philosophical questions: 1.) Should governments have penalties for those who live unhealthy lifestyles? A list of unhealthy lifestyles would include things like smoking, drinking, illegal drugs, prostitution, and other “vice” type activities. I guess the “government penalties” would be referring to monetary punishments, withholding medical treatments (insurance companies would love that), possibly imposing/regulating very high (exorbitant) prices on things considered unhealthy in order to cut down on their use, and other possibilities. 2.) Or, would you say that living an unhealthy lifestyle, likely resulting in a LOT of eventual personal pain and suffering, should be punishment enough for unhealthy lifestyles? When people make bad choices in life, often in their youth where ignorance and immediate gratification takes them over,  3.) Should a society be obligated to help "fix" them, by way of tax money?   Is that part of
Read more