Navigation Links
Ocean's fiercest predators now vulnerable to extinction
Date:2/17/2008

This release is available in French.

Sharks are disappearing from the worlds oceans. The numbers of many large shark species have declined by more than half due to increased demand for shark fins and meat, recreational shark fisheries, as well as tuna and swordfish fisheries, where millions of sharks are taken as bycatch each year.

Now, the global status of large sharks has been assessed by the World Conservation Union (IUCN), which is widely recognized as the most comprehensive, scientific-based information source on the threat status of plants and animals.

As a result of high and mostly unrestricted fishing pressure, many sharks are now considered to be at risk of extinction, explained Julia Baum, a member of the IUCNs Shark Specialist Group who will be speaking at the American Association for the Advancement of Science (AAAS) Annual Conference in Boston, which runs from February 14 to 18. She will outline management measures required to conserve sharks at an afternoon press conference on February 17.

Of particular concern is the scalloped hammerhead shark, an iconic coastal species, which will be listed on the 2008 IUCN Red List as globally endangered due to overfishing and high demand for its valuable fins in the shark fin trade, added Baum, who is an NSERC Postdoctoral Fellow at Scripps Institution of Oceanography.

Baum pointed out that fishing for sharks in international waters is unrestricted, and she supports a recently adopted United Nations resolution calling for immediate shark catch limits as well as a meaningful ban on shark finning (the practice of removing only a sharks fins and dumping the still live but now helpless shark into the ocean to die).

Research at Dalhousie University over the past five years, conducted by Baum and the late Ransom Myers, demonstrated the magnitude of shark declines in the northwest Atlantic Ocean. All species the team looked at had declined by over 50 per cent since the early 1970s. For many large coastal shark species, the declines were much greater: tiger, scalloped hammerhead, bull and dusky shark populations have all plummeted by more than 95 per cent.


'/>"/>

Contact: Dor Dunne
dore.dunne@nserc.ca
613-851-8677
Natural Sciences and Engineering Research Council
Source:Eurekalert

Related biology news :

1. First map of threats to marine ecosystems shows all the worlds oceans are affected
2. Oceans Past: A Guide to Oceans Future
3. Deep-sea species loss could lead to oceans collapse, study suggests
4. Coral reefs unlikely to survive in acid oceans
5. Unprecedented global measurement network achieves full coverage of oceans
6. Scientists gather in New Zealand to share oceans secrets
7. Acid oceans warning
8. NASA celebrates a decade observing climate impacts on health of worlds oceans
9. NASA celebrates a decade observing climate impacts on health of worlds oceans
10. Slow-motion video study shows shrews are highly sophisticated predators
11. Predators and parasites may increase evolutionary stability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... 22, 2016   Acuant , the ... solutions, has partnered with RightCrowd ® ... Visitor Management, Self-Service Kiosks and Continuous Workforce ... add functional enhancements to existing physical access ... venues with an automated ID verification and ...
(Date:6/15/2016)... June 15, 2016 Transparency ... titled "Gesture Recognition Market by Application Market - Global Industry Analysis ... 2024". According to the report, the  global gesture recognition ... 2015 and is estimated to grow at a ... by 2024.  Increasing application of gesture ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... has awarded the 44 million US Dollar project, ... Security Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... world leader in the production and implementation of Identity Management ... in January, however Decatur was selected ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Cancer experts from ... believe could be a new and helpful biomarker for malignant pleural mesothelioma. Surviving ... to read it now. , Biomarkers are components in the blood, tissue ...
(Date:6/27/2016)...  Liquid Biotech USA , ... Sponsored Research Agreement with The University of Pennsylvania ... cancer patients.  The funding will be used to ... clinical outcomes in cancer patients undergoing a variety ... employed to support the design of a therapeutic, ...
(Date:6/24/2016)... ... ... While the majority of commercial spectrophotometers and fluorometers use the z-dimension of ... higher end machines that use the more unconventional z-dimension of 20mm. Z-dimension ... of the cuvette holder. , FireflySci has developed several Agilent flow cell product ...
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
Breaking Biology Technology: