Navigation Links
Changes in ocean conditions in Sargasso Sea potential cause for decline in eel fishery
Date:3/6/2008

American eels are fast disappearing from restaurant menus as stocks have declined sharply across the North Atlantic. While the reasons for the eel decline remain as mysterious as its long migrations, a recent study by a NOAA scientist and colleagues in Japan and the United Kingdom says shifts in ocean-atmosphere conditions may be a primary factor in declining reproduction and survival rates.

Although many aspects of spawning and early life history of this species are poorly understood, they are clearly adapted to grow in the low productivity waters of the Sargasso Sea south of Bermuda, NOAA biologist Kevin Friedland said. They spend up to a year or more as larvae and tend to live in the upper 100 meters (about 330 feet) of the water column, so any changes in the surface waters will have a big impact during critical stages in their development.

Friedland and colleagues have found a significant correlation between the North Atlantic Oscillation, a decadal long ocean-atmosphere circulation pattern, and long-term variations in the catches of juvenile stages of the eels, commonly called glass eels. Considered a delicacy, the harvest of glass eels remains controversial due to concerns about stocks that some say may be close to collapse. Since the 1970s, the numbers of eels reaching Europe is believed to have declined by more than 90 percent.

In a study recently published in the ICES Journal of Marine Research, the researchers reviewed data of annual catches of glass eels since 1938 at Den Oever in the Netherlands. With the exception of the war years when no data was collected, the time series correlated to broad scale measures of climate variation such as the NAO and with specific local variations such as sea surface temperature, dominant wind pattern and the nature of the mixing in the upper layers of the ocean that control productivity. Changes in these factors matched changes in recruitment.

Eels in both the Atlantic and Pacif
'/>"/>

Contact: Shelley Dawicki
shelley.dawicki@noaa.gov
508-495-2378
NOAA National Marine Fisheries Service
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Stanford researchers say living corals thousands of years old hold clues to past climate changes
2. Man-made changes bring about new epoch in Earths history
3. Humans have caused profound changes in Caribbean coral reefs
4. Elevated carbon dioxide changes soil microbe mix below plants
5. UC Davis bird-flu expert calls for changes in early-warning system
6. Hearing changes how we perceive gender
7. A new explanation for evolutionary changes in genetic sex-determination systems
8. Tolerance to inhalants may be caused by changes in gene expression
9. New technique reveals subtle force-induced changes in biomolecules conformation
10. Great Plains historical stability vulnerable to future changes
11. New study shows fish respond quickly to changes in mercury deposition
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/22/2014)... Consortium Ltd.,s nanotechnology expert will present a poster ... at the 7th International Nanotoxicology Congress to ... , Dr. Monita Sharma will outline a strategy consistent ... of Sciences, " Toxicity Testing in the 21st Century: ... of non-animal methods involving human cells and cell lines ...
(Date:4/22/2014)... University of Kentucky has discovered new methods to build ... The research, led by Peixuan Guo, professor and ... College of Pharmacy and Markey Cancer Center, is reported ... Polymer Material To Build Robust Structures with Defined Shape ... L. Jasinski. , The article, which will appear in ...
(Date:4/22/2014)... Many research projects study the effects of temperature and ... species. However, an important component of climate research, the ... UFZ in collaboration with their colleagues from the Universities ... data from the U.S. NASA space agency in such ... the influence of UV-B radiation on organisms. , The ...
Breaking Biology News(10 mins):RNA shows potential as boiling-resistant anionic polymer material for nanoarchitectures 2UV-radiation data to help ecological research 2
... guidelines being used by foresters and the timber industry ... trees., Maps developed by Laura Gray, a post-doctoral fellow ... climatically suitable habitat for tree species based on climate ... work, published recently in the journal Climatic Change ...
... HZB physicist Dr. Philippe Wernet, chemist Prof. Dr. Athina Zouni ... SLAC National Accelerator Laboratory and Dr. Junko Yano of the ... project. In spite of the fact that all ... of it. Because as part of photosynthesis, green plants, algae, ...
... become stiff after middle age, a new study has revealed., ... compensate for the effects of obesity. But after middle age, ... body fat rises potentially increasing the risk of dying ... of body fat may be related to the total number ...
Cached Biology News:Snap shots of 1 of life's central processes 2Body fat hardens arteries after middle age 2
(Date:1/15/2014)... CA (PRWEB) January 15, 2014 ... research solutions, today announced that Lupin Limited, one of ... Freeslate’s CM Protégé PharmD System for high ... Mumbai, India, is focused on a wide range of ...
(Date:1/14/2014)... 14, 2014 Histogen, Inc., a regenerative ... cells grown under simulated embryonic conditions, today announced that ... Suneva Medical, Inc. for physician-dispensed aesthetic products containing Histogen’s ... This agreement is an amendment to the existing license ...
(Date:1/14/2014)... SAN DIEGO and BETHESDA, Md. ... they are joining together with two institutes from the ... more reliable tools for bringing safer, more effective treatments ... with the National Center for Advancing Translational Sciences (NCATS) ...
(Date:1/14/2014)... 14, 2014   Kinaxis ®, provider of RapidResponse ®, ... and operations planning ( S&OP ) service, is proud to ... which will be held at the Hilton San Diego Bayfront, ... customer Elisabeth Kaszas , Director of Supply Chain at ...
Breaking Biology Technology:Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... Stage Product Targeting Life-threatening Hereditary ... to Host Conference Call at 10:30 A.M. Eastern Today to Discuss ... ... Incorporated,(Nasdaq: VPHM ) and Lev Pharmaceuticals, Inc. (OTC Bulletin Board: LEVP),today ...
... July 15 /Xinhua-PRNewswire-FirstCall/ --,China-Biotics, Inc. (OTC Bulletin ... firm specializing in the manufacture,research, development, marketing ... appointment of American Stock Transfer & Trust ... registrar, effective August 15, 2008.,AST, headquartered in ...
... Inc. (NYSE: CRY ),a biomaterials, medical device and ... results will be released on,Thursday, July 31, 2008. The ... 10:00 a.m. Eastern Time, July 31, 2008, to discuss ... by Steven G.,Anderson, president and CEO of CryoLife, Inc., ...
Cached Biology Technology:ViroPharma To Acquire Lev Pharmaceuticals 2ViroPharma To Acquire Lev Pharmaceuticals 3ViroPharma To Acquire Lev Pharmaceuticals 4ViroPharma To Acquire Lev Pharmaceuticals 5ViroPharma To Acquire Lev Pharmaceuticals 6ViroPharma To Acquire Lev Pharmaceuticals 7ViroPharma To Acquire Lev Pharmaceuticals 8ViroPharma To Acquire Lev Pharmaceuticals 9China-Biotics, Inc. Announces Appointment of New Transfer Agent Effective August 15, 2008 2CryoLife Announces Release Date and Teleconference Call Details for Second Quarter 2008 Financial Results 2
Comp Dim: chamber diam. depth 20 2.8 mm chamber maximum volume 720 μL...
...
... A direct, simple approach ... the well surface of an ... anhydride maintains its integrity and ... under dry, room temperature conditions ...
... reagent; Ideal for clarifying many items ... nucleic acids, & proteoglycans; Contains no ... downstream processing; Utilizes a reagent that ... as a suspension in saline; Simple ...
Biology Products: