Mar 122013
 

While a new study warns that up to 100 million sharks are killed annually, there are signs out of China that demand for fin may be on the decline.

A study published last week in the journal Marine Policy estimated shark deaths at 100 million in 2000 and 97 million in 2010, suggesting a slight drop in shark killing. Meanwhile reports out of China in recent months suggest an accelerating decline in shark fin consumption. China is the top market for shark fin, which is consumed as a status symbol, typically at wedding ceremonies and business dinners.

(Sphyrna lewini) off Cocos Island, Costa Rica. This species is up for protection by CITES this month if nations votes in its favor. Photo by: Barry Peters.

Figures released by Chinese officials late last year showed that shark fin imports fell from 10,292 metric tons in 2011 to 3,087 through the fist 11 months of 2012. Meanwhile, last summer the Chinese government announced it will stop serving shark fin at state dinners, an important symbolic move. The Chinese media has also recently grappled with the issue, noting that are loaded with mercury and have no nutritional value.

“Wine is replacing shark fin. It conveys status as well or better than shark fin,” , the head of , which has lead a campaign against , told mongabay.com. “Things are really coming to a head now and it is becoming more mainstream to address the demand side of the . The shark campaign is working, but whether we can apply it to rhinos and elephants is the next challenge.”

Various media outlets have reported that the price of shark fins in plummeting, down by about 50-70 percent in China. A drop in price means fishermen are less likely to target sharks. Such a reduction, if confirmed, would represent millions of sharks being saved from the hook.

Sharks have also seen good news on the conservation side in recent years. Numerous countries have declared some or all of their waters as “shark sanctuaries.” In addition, shark fin soup has faced legislative bans in a number of U.S. states.

Finned shark at the bottom of the ocean: Nancy Boucha.

Still biologists fear for many species of shark, especially given slow maturation, long lifespan and few offspring. The researchers estimated that fisheries are taking 6.4 to 7.9 percent of the world’s total shark population from the ocean every year. However, sharks average population growth rate is about 4.9 percent. If sharks are allowed to recover, it will be a slow and long process much like is has been for whales since industrial whaling was banned in the mid-1980s.

In the meantime, the decline in sharks is likely having impacts across the world’s oceans as top predators, both on land and in water, play oversized roles on ecological stability.

“This is a big concern because the loss of sharks can affect the wider ecosystem,” said co-author of the Marine Policy paper Mike Heithaus, with Florida International University. “In working with tiger sharks, we’ve seen that if we don’t have enough of these predators around, it causes cascading changes in the ecosystem, that trickle all the way down to marine plants.”

At the current CITES meeting in Bangkok, Thailand, nations are proposing to list several shark species for protection including the scalloped hammerhead shark (Sphyrna lewini), great hammerhead shark (Sphyrna mokarran), smooth hammerhead shark (Sphyrna zygaena), Oceanic whitetip shark (Carcharhinus longimanus), and porbeagle shark (Lamna nasus). CITES participants will also vote on protecting manta rays, which is also overfished for its gill plates that are used in Chinese Traditional Medicine.

CITATION: Boris Worm, Brendal Davis, Lisa Kettemer, Christine A. Ward-Paige, Demian Chapman, Michael R. Heithaus, Steven T. Kessel, Samuel H. Gruber. Global catches, exploitation rates, and rebuilding options for sharks. Marine Policy. 2013.

Read more at http://news.mongabay.com/2013/0304-butler-hance-sharks.html

Share on social media:

Facebooktwittergoogle_plusredditpinterestlinkedintumblrmail
Facebook Comments

Leave a Reply

avatar
Norman Ellison

How do Asian nations regard themselves as enlightened and civilized and yet have no regard for other life forms , raping eco systems at will for profit?

Norman Ellison

How do Asian nations regard themselves as enlightened and civilized and yet have no regard for other life forms , raping eco systems at will for profit?

wpDiscuz

Top-Viewed Posts Last 30 Days

  1. POLL: Should Finland’s 235 wolves be culled? [1638 Views]
  2. POLL: Should the Wildlife Trust’s campaign to slaughter grey squirrels be stopped? [1605 Views]
  3. POLL: Should all tiger farms in China be closed down? [1578 Views]
  4. POLL: Should Trump disband USDA Wildlife “Killing” Services? [1165 Views]
  5. POLL: Should more bear hunting licenses be issued? [1150 Views]
  6. Gray Squirrels versus Red Squirrels – The Facts [1056 Views]
  7. POLL: Should Australia’s feral cats be culled? [819 Views]
  8. POLL: Could U.S. endangered species rules go extinct under Trump? [726 Views]
  9. POLL: Should the Woolly Mammoth be resurrected through genetic engineering? [724 Views]
  10. Why do birds sing? [634 Views]

Top-Viewed Posts Last 12 Months

  1. White Killer Whale Adult Spotted for First Time in Wild [42055 Views]
  2. POLL: Should there be a worldwide ban on fur farms? [16796 Views]
  3. POLL: Should fur farming be banned in the European Union? [13849 Views]
  4. POLL: Should Congress disband Wildlife “Killing” Services? [11117 Views]
  5. POLL: Should driven grouse-shooting be banned? [8612 Views]
  6. POLL: Should grouse shooting on highland estates be banned? [8309 Views]
  7. POLL: Should the annual Canadian seal hunt be banned? [8128 Views]
  8. POLL: Should black bears be killed for Royal Guards’ fur caps? [8048 Views]
  9. POLL: Should China’s dog meat festival be banned? [7416 Views]
  10. Wildlife Photo Adventure in Costa Rica! [6115 Views]