Navigation Links
Over 50 percent of oceanic shark species threatened with extinction
Date:5/22/2008

22nd May 2008 The first study to determine the global threat status of 21 species of wide-ranging oceanic pelagic sharks and rays reveals serious overfishing and recommends key steps that governments can take to safeguard populations. These findings and recommendations for action are published in the latest edition of Aquatic Conservation: Marine and Freshwater Ecosystems.

This international study, organised by the IUCN Shark Specialist Group (SSG), was conducted by 15 scientists from 13 different research institutes around the world, with additional contributions from scores of other SSG members.

The experts determined that 16 out of the 21 oceanic shark and ray species that are caught in high seas fisheries are at heightened risk of extinction due primarily to targeted fishing for valuable fins and meat as well as indirect take in other fisheries. In most cases, these catches are unregulated and unsustainable. The increasing demand for the delicacy shark fin soup, driven by rapidly growing Asian economies, means that often the valuable shark fins are retained and the carcasses discarded. Frequently, discarded sharks and rays are not even recorded.

Sharks and rays are particularly vulnerable to overfishing due to their tendency to take many years to become sexually mature and have relatively few offspring.

Fishery managers and regional, national and international officials have the opportunity and the obligation to halt and reverse the rate of loss of biodiversity and ensure sharks and rays are exploited sustainably. says lead author Nicholas Dulvy from the Centre for Environment, Fishers and Aquaculture Science, Lowestoft Laboratory in Lowestoft, UK.

The current rate of biodiversity loss is ten to a hundred times greater than historic extinction rates, and as humans make increasing use of ocean resources it is possible that many more aquatic species, particularly sharks, are coming under threat, says Dulvy, now based at Simon Fraser University, Vancouver. This does not have to be an inevitability. With sufficient public support and resulting political will, we can turn the tide."

The groups specific recommendations for governments address the need to:

  • Establish and enforce science-based catch limits for sharks and rays
  • Ensure an end to shark finning (removing fins and discarding bodies at sea)
  • Improve the monitoring of fisheries taking sharks and rays
  • Invest in shark and ray research and population assessment
  • Minimize incidental catch (bycatch) of sharks and rays
  • Cooperate with other countries to conserve shared populations.

The traditional view of oceanic sharks and rays as fast and powerful too often leads to a misperception that they are resilient to fishing pressure, said Sonja Fordham, co-author of the paper and Deputy Chair, IUCN Shark Specialist Group and Policy Director, Shark Alliance. Despite mounting evidence of decline and increasing threats to these species, there are no international catch limits for oceanic sharks. Our research shows that action is urgently needed on a global level if these fisheries are to be sustainable.


'/>"/>

Contact: Jennifer Beal
jbeal@wiley.com
44-012-437-70633
Wiley-Blackwell
Source:Eurekalert

Related biology news :

1. Aerodynamic trailer cuts fuel and emissions by up to 15 percent
2. Dust in West up 500 percent in past 2 centuries, says CU-Boulder study
3. Nitrogen pollution boosts plant growth in tropics by 20 percent
4. 100 percent of people carry at least 1 type of pesticide
5. Gene, stem cell therapy only needs to be 50 percent effective to create a healthy heart
6. SinuNase Phase 3 show almost 100 percent of chronic sinusitis cases are from fungal-induced inflamma
7. Restless legs syndrome affects nearly 2 percent of US/UK children
8. New study warns limited carbon market puts 20 percent of tropical forest at risk
9. Oceanic sharks worldwide at serious risk from high-seas fishing, rising demand for shark products
10. Scientists show that streams are critical to preservation of oceanic coastal zones
11. Team probes mysteries of oceanic bacteria
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/1/2017)... Massachusetts , February 1, 2017 IDTechEx ... events on emerging technology, announces the availability of a new report, ... Continue Reading ... ... in industrial and collaborative robots. Source: IDTechEx Report "Sensors for Robotics: ...
(Date:1/25/2017)... , Jan. 25, 2017 The Elements of ... (IAM) lifecycle is comprised of a comprehensive set ... purpose of maintaining digital identities and providing a ... applications. There are significant number of programs opted ... to time by optimizing processes and changing policies. ...
(Date:1/19/2017)... 19, 2017 According to a new report published by ... - 2022," the global biometric sensor market is expected to garner $1.5 billion ... 2015, Asia-Pacific dominated the global market and contributed over ... Continue Reading ... ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... 22, 2017 Aethlon Medical, Inc. (Nasdaq: ... study that validated the ability of the Aethlon HemopurifierĀ® ... increased mortality in immune-suppressed sepsis patients and also contribute ... The objective of the study was to validate the ... virus (EBV) and Herpes Simplex virus 1 (HSV1) by ...
(Date:2/22/2017)... ... 22, 2017 , ... Pharma and biotech consulting firm ... Operating from Pennsideā€™s Zurich headquarters, Pennside Partners, GmbH, Mr. Perkins brings 14 years ... than a decade with leading market research firm, GfK. He began his pharma ...
(Date:2/22/2017)... RESEARCH TRIANGLE PARK, N.C., Feb. 22, 2017  United ... announced its financial results for the fourth quarter ... annual 2016 financial results reflect continued growth as ... $700 million," said Martine Rothblatt, Ph.D., United Therapeutics, ... strengthen our ability to develop and advance our ...
(Date:2/21/2017)... - SQI Diagnostics Inc. ("SQI" or the "Company") (TSX-V: SQD; OTCQX: ... months ended December 31, 2016. SQI is ... company that develops and commercializes proprietary technologies and products for ... ... milestones achieved in fiscal 2016," said Andrew Morris , ...
Breaking Biology Technology: