Navigation Links
To save or savor? It's decision time for Atlantic bluefin tuna
Date:2/18/2008

ased dramatically, which has led to contentious claims across the ocean that Mid-Atlantic and eastern fleets are catching the North American fleet's hard-earned recovery.

Mid-Atlantic waters are proving to be hotspots for fish from both sides, and international fleets have been longlining here for the past decade, further disabling the recovery of West Atlantic fish.

More important, tagging has revealed that although some tuna from each fishery engaged in trans-Atlantic tourism, fish from the Mediterranean spawning ground are flocking to the western Atlantic like European tourists enjoying a favorable exchange rate on the dollar.

Data from electronic tagging by Block's team demonstrate that juvenile bluefin come from the Mediterranean to feed along the North American coast for one to three years, then return to the Mediterranean to spawn. They do so in larger numbers than those tuna spawned in the Gulf of Mexico that traveled east. This imbalance turns out to be critical to assessing how many fish in the Gulf of Mexico stock are left.

It appears that the continued presence of Mediterranean fish, year after year, was adding a hidden subsidy to the native western Atlantic population, potentially making it appear healthier than it really was. In essence, the International Commission for the Conservation of Atlantic Tunas has been assuming that the western Atlantic fishery consisted entirely of tuna spawned in the Gulf of Mexico, and has set quotas beyond what the native population can sustain.

Tagging data also showed that bluefin primarily went to the Gulf of Mexico to spawn later in life than had been assumed: at age 12, not age 8. The two populations of Atlantic bluefin have slightly different life histories; Gulf of Mexico-spawned fish reach maturity later and grow more slowly than the Mediterranean population.

"For the past two decades, we've been lowering the age for a comme
'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert

Page: 1 2 3 4 5 6 7

Related biology news :

1. American College of Medical Genetics responds to new FDA labeling decision for warfarin
2. Cilia: small organelles, big decisions
3. Decisions on the second round of the Excellence Initiative announced
4. More comprehensive analysis of Klamath River basin needed to aid decision makers
5. New continent and species discovered in Atlantic study
6. Condition of bluefin tuna in gulf of maine is declining
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) a biometric ... recent success of the Wocket™ smart wallet at CES 2015 in ... named as one of the "11 Hot Products at CES" in a ... CES So Far" by Newseveryday.com and "The top 10 gadgets from CES ...
(Date:1/22/2015)... Jan. 21, 2015  Analyst Report Issued by Small Cap IR. ... showed that planet-wide, transactions at merchants on the leading payment ... number of credit, debit, and prepaid cards reached 6.54 billion.  ... of fraudulent card usage in 2012, and credit and debit ...
(Date:1/22/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/wxdglm/global_wearable ... "Global Wearable Technologies Market and Applications, Opportunities, Industry ... Forecast 2014-2020" report to their offering. ... that can be worn on the user,s body ...
Breaking Biology News(10 mins):CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 2
... 18, 2010 Reportlinker.com announces that a new market ... Global Flow Cytometers Industry ... markets for Flow Cytometers in US$ Million. The report ... Europe, Asia-Pacific, and Latin America. Annual estimates and forecasts ...
... 2010) Discovery of a fifth gene defect and the ... are the subject of studies released this month involving researchers ... (UTHealth). In both studies, the investigators have identified alterations ... of smooth muscle cells, which line the aorta and other ...
... is Back and Oberthur Technologies Remains a Key Partner -- CHANTILLY, Virginia, November 18, 2010 ... ... if (typeof(lpUnit)==,undefined,) var lpUnit=,PRN,; --> ... shortURL = ""; BitlyCB.alertResponse = function(data) { var s = ,; var first_result; // Results are keyed by longUrl, ...
Cached Biology News:Reportlinker Adds Global Flow Cytometers Industry 2Reportlinker Adds Global Flow Cytometers Industry 3Reportlinker Adds Global Flow Cytometers Industry 4Reportlinker Adds Global Flow Cytometers Industry 5Reportlinker Adds Global Flow Cytometers Industry 6Reportlinker Adds Global Flow Cytometers Industry 7Reportlinker Adds Global Flow Cytometers Industry 8Reportlinker Adds Global Flow Cytometers Industry 9UTHealth discoveries shed more light on deadly thoracic aortic disease 2UTHealth discoveries shed more light on deadly thoracic aortic disease 3The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 2The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 3The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 4The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 5The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 6The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 7The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 8The CLEAR Program is Back and Oberthur Technologies Remains a Key Partner 9
(Date:1/23/2015)... (PRWEB) January 23, 2015 Biofertilizers stimulate ... such as nitrogen and phosphorous through the activities in ... biofertilizers is increasing due to the stress on reducing ... fertilizers. , The report defines and segments the bio ...
(Date:1/22/2015)... January 22, 2015 Shimadzu Scientific ... UV-1280 multipurpose UV-visible spectrophotometer. Offering wavelength scanning from ... is ideal for applications in a variety of ... , The user-friendly UV-1280 enables intuitive operation, while ...
(Date:1/22/2015)... CAMBRIDGE, Mass (PRWEB) January 21, 2015 Cambridge ... Semantic Web technology, today announced that 2014 was a record-breaking ... expanding the capabilities of the Anzo Smart Data Platform and ... discover and utilize insights from diverse data which led to ...
(Date:1/22/2015)... California (PRWEB) January 22, 2015 Pipette.com ... Offer to their comprehensive portfolio of Eppendorf products. ... customers to purchase a Centrifuge 5424/5424 R and receive ... of either Eppendorf Research plus or Eppendorf Reference 2 ...
Breaking Biology Technology:Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 2Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 3Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 4Shimadzu’s New Monitored Single-Beam UV-Vis Spectrophotometer Offers Comprehensive Measurement Options in a Compact Body 2Cambridge Semantics Announces Record Results for 2014 2Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2
... ANNAPOLIS, Md., April 2, 2008 ... company specializing in the development and,commercialization of ... today that it has completed its acquisition ... March 20,2008., David P. Wright, President ...
... April 2, 2008 In,testimony to be delivered today ... for Taxpayer and Consumer,Rights) backed a bill in the ... The bill, SB 1565, was introduced by Sen. ... to ensure California,s neediest residents,will have access to therapies ...
... 2, 2008 Joseph F. Finn,Jr., CPA, the Assignee ... completion of the sale of ActivBiotics intellectual,property assets for ... II antibiotic, 2) a library of novel rifamycin compounds, ... a library of SODm,small molecules., Mr. Finn praised ...
Cached Biology Technology:PharmAthene Closes Acquisition of Avecia Biodefense Vaccines Business Unit 2PharmAthene Closes Acquisition of Avecia Biodefense Vaccines Business Unit 3PharmAthene Closes Acquisition of Avecia Biodefense Vaccines Business Unit 4PharmAthene Closes Acquisition of Avecia Biodefense Vaccines Business Unit 5Consumer Advocate Testifies in Support of Stem Cell Oversight Legislation 2
... The DNA quantitation kit is used to ... the presence of RNA or protein. With this ... which can be detected with a VersaFluor or ... range of 10 ng per ml to 5 ...
ImmunoPure Plus Immobilized Protein G, , , , Support: Cross-linked 6%, beaded agarose , Capacity: > 20 mg human IgG/ml of gel ...
... Infinite 200 series of microplate readers combines ... detection in an affordable, easy-to-use platform for ... The unique modular design and adaptability of ... a choice of a monochromator (M200) or ...
...
Biology Products: