Navigation Links
Study helps assess global status of tuna and billfish stocks
Date:8/15/2011

at 7 of the 61 species studied (11%) were threatened (i.e., vulnerable, endangered, or critically endangered), 4 species (7%) were "near threatened," and 39 species (64%) were of "least concern." Eleven species (18%) lacked adequate data and were thus classified as "data deficient."

The seven threatened species are southern bluefin tuna, Atlantic bluefin tuna, bigeye tuna, blue marlin, white marlin, and two species of Spanish mackerels. Graves says two main factors contribute to these fishes' troubled status: the tunas' high dollar value leads to heavy fishing pressure, and all the species are slow to reach sexual maturity, prolonging any recovery from over-fishing.

The proportion of threatened tuna and billfish species is higher than that of most other groups of marine bony fishes, with values closer to those recorded for other valuable and slow-reproducing species such as sharks. A previous IUCN study led by VIMS emeritus professor Jack Musick found that 17 to 33% of shark, skate, and ray species are in the threatened category.

Graves and his co-authors write that the quickest road to recovery for the most-depleted stocksSouthern and Atlantic bluefin tunasis to ban harvesting of these fishes until their populations can rebuild to healthy levels. They recognize that this would cause economic hardship and increase the incentive for illegal fishing, and thus call for strong deterrents such as controlled international trade through a listing of these species on the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).

The scientists note several examples where strict monitoring and compliance measures have led to successful recovery of tuna, mackerel, and billfish species.

Refining the IUCN criteria

The IUCN Red List process provides a useful worldwide standard for assessing and comparing extinction risks among all organismsboth marine and terrestrial. But Graves and other memb
'/>"/>

Contact: David Malmquist
davem@vims.edu
804-684-7011
Virginia Institute of Marine Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... Sticklebacks, the roaches of the fish world, are the ... control body shape. They,ve moved from the ocean into ... the world, each time changing their skeleton to adapt ... and freshwater populations of sticklebacks now have turned up ... evidence that a simple change in that gene,s regulation ...
(Date:9/18/2014)... swim up to 400 kilometres in search of a home, ... , Clownfish spend their entire adult lives under the protection ... the open ocean, says study co-author, Dr Hugo Harrison from ... CoE) at James Cook University. , "In the past we ... a rare glimpse into how far they can swim, crossing ...
(Date:9/17/2014)... health care to reproductive technologies, the justice and ... of people to identify key issues, articulate their ... find the most defensible ways forward. But what ... societal conversations?, The Hastings Center and the Presidential ... teamed up to publish a series of essays ...
Breaking Biology News(10 mins):Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3Nemo's epic journey to find a new home 2Why bioethics literacy matters 2Why bioethics literacy matters 3
... produced a systematic listing of the ways a particular cancerous ... eventually could make possible new, more targeted therapies for patients. ... developed by trial and error to essentially kill a broad ... why they have massive side effects," said Saeed Tavazoie, a ...
... DALLAS (SMU) Pairing technological innovation with business collaboration ... driving force behind the new Hunter and Stephanie Hunt ... School of Engineering. Gifts totaling $5 ... Gay F. Solomon, Bobby B. Lyle and others will ...
... Md. -- University of Maryland researchers have developed ... techniques to analyze patterns of improvised explosive device ... and predict the locations of weapons caches that ... University of Maryland computer science Ph.D. student ...
Cached Biology News:Princeton scientists find way to catalog all that goes wrong in a cancer cell 2New engineering institute to modify, develop technology for the global poor 2New engineering institute to modify, develop technology for the global poor 3'Fighting' IED attacks with SCARE technology 2'Fighting' IED attacks with SCARE technology 3
(Date:9/18/2014)... (PRWEB) September 18, 2014 ... urological and interventional radiology products and services, announced ... as cryotherapy and cryoablation) versus external beam radiotherapy ... of the American Urological Association (MAAUA) Annual Meeting ... "Comparing Relative Effectiveness of Cryosurgery and External Beam ...
(Date:9/18/2014)... September 18, 2014 A novel robotic ... MRI scanner is currently being tested as part of ... Hospital in Boston with the aim of determining if ... make prostate cancer biopsies faster, more accurate, less costly, ... also has the potential to deliver prostate cancer therapies ...
(Date:9/18/2014)... September 18, 2014 Texas Governor ... Sharp, Texas A&M Health Science Center CEO Brett ... of Health and Human Services (HHS), State of ... national pandemic influenza vaccine manufacturing facility in Bryan, ... anchor for the Texas A&M Biocorridor – a ...
(Date:9/18/2014)... DUBLIN , Sept. 18, 2014 ... addition of the "Global N-acetylcysteine Industry Report ... The Global N-acetylcysteine Industry Report 2014 is ... state of the global N-acetylcysteine industry. ... industry including definitions, classifications, applications and industry chain ...
Breaking Biology Technology:HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 3Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 4Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 5Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 6Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4Global N-acetylcysteine Industry Report 2014 2
... note: , ,As promised, our latest e-mail newsletter contains the ... has increased from around 30,000 visitors a month to over ... than a few stories weve paid attention to what drew ... who has already registered for Fusion2006. The conference isnt until March ...
... Corporation for Assigned Names and Numbers, is all about a ... golden key is a name on the net called a ... key management system so that billions of single domain name ... problem. After all, without this access, the Internet has no ...
... researchers led by stem-cell pioneer James Thomson have ... and better-defined lab conditions than previous cultures. , ... could pave the way for stem-cell treatments with ... contamination. Growing stem cells in the lab requires ...
Cached Biology Technology:When will the Internet be divided among nations? 2When will the Internet be divided among nations? 3When will the Internet be divided among nations? 4When will the Internet be divided among nations? 5
P8B1...
Goat polyclonal to Sarcosine Oxidase ( Abpromise for all tested applications). Antigen: Microbial Sarcosine Oxidase. Entrez Gene ID: 51268 Swiss Protein ID: Q6IAJ9...
Rabbit polyclonal to XPC ( Abpromise for all tested applications). Antigen: Synthetic peptide from N-terminus of Human XPC conjugated to a carrier protein Entrez Gene ID: 7508 Swiss ...
Rabbit polyclonal to FANCG ( Abpromise for all tested applications). Antigen: Synthetic peptide: MSRQTTSVGSSC, corresponding to amino acids 1 - 12 of Human FANCG. Entrez GeneID: 2189 Swis...
Biology Products: