Navigation Links
Atlantic tuna return thousands of miles to birthplace to spawn
Date:10/2/2008

COLLEGE STATION, Oct. 2, 2008  The Atlantic bluefin tuna is the largest and most sought-after of all tunas, weighing as much as 1,400 pounds and capable of fetching as much as $50,000 or more in Asian markets where its meat is a prized commodity, one big reason why its numbers have declined precipitously since the 1970s. New research findings reported in Science have critical implications for how bluefin tuna are managed on both sides of the Atlantic Ocean.

A team of international researchers led by Dr. Jay Rooker of Texas A&M University at Galveston adds a new chapter to this emerging story, providing critical insights into the population structure and mixing of North American and Mediterranean populations of bluefin tuna. This comes at an important time as new assessments by international scientists suggest that both western and eastern fisheries are unsustainable at their current levels.

In the current study titled, "Natal Homing and Connectivity in Atlantic Bluefin Tuna Populations," Rooker and fellow researchers examine the chemical composition of the fish's ear bone the otolith to identify individuals from different nurseries. Chemical signatures in the form of stable carbon and oxygen isotope ratios served as a "birth certificate" and were used by the researchers to determine the origin of adolescent and adult bluefin tuna (2-20 years of age or more) on spawning and foraging grounds in the Atlantic Ocean.

The study shows that trans-Atlantic movement and mixing of populations was high with over half of the juveniles collected in North American waters being of Mediterranean origin. "North American fisheries for juvenile bluefin tuna appear to be supported to a large degree by the Mediterranean population, and thus the condition of this population will directly impact recreational fisheries for bluefin tuna in U.S. waters," according to Rooker.

"Our data coupled with archival tagging data clearly show that the
'/>"/>

Contact: Keith Randall
keith-randall@tamu.edu
979-845-4644
Texas A&M University
Source:Eurekalert

Page: 1 2

Related biology news :

1. New continent and species discovered in Atlantic study
2. To save or savor? Its decision time for Atlantic bluefin tuna
3. Isotope analysis reveals foraging area dichotomy for Atlantic leatherback turtles
4. UD nets NOAA funding for Mid-Atlantic ocean observing
5. Pacific shellfish ready to invade Atlantic
6. Signals from the Atlantic salmon highway
7. Aware, Inc. Announces Richard Moberg to Return as CFO
8. Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast
9. A switch that controls whether cells pass point of no return
10. Thousands of starving children could be restored to health with peanut butter program
11. How mother of thousands makes plantlets
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/27/2014)... to date, researchers from the U.K. provide national, regional, ... virus (HCV). Findings published in Hepatology, a journal of ... indicate that genotype 1 is the most prevalent worldwide, ... reside in East Asia. Genotype 3, at just over ... by genotypes 2, 4, 6, and 5. , ...
(Date:7/27/2014)... CANCER RESEARCH UK scientists at Barts Cancer Institute have ... make cancer therapy significantly more effective, according to research ... at Barts Cancer Institute, part of Queen Mary University ... adhesion kinase (FAK), signals the body to repair itself ... damaging DNA. When the researchers removed FAK from blood ...
(Date:7/25/2014)... colonial era, 100,000s of people lived on the land ... fire to control the availability of plants they used ... to use fire to maintain desired habitat and natural ... Forest Service,s Pacific Southwest Station, will lead a ... Refuge during the Ecological Society of America,s 99th Annual ...
Breaking Biology News(10 mins):Hepatitis C virus genotype 1 is most prevalent worldwide 2New drug target can break down cancer's barrier against treatment 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
... U.S. Department of Applied Neurobiology at the Walter Reed ... (AVC) have signed a Cooperative Research and Development Agreement ... brain injury (TBI). The alliance is based on ... NoNO Inc., of Toronto, Canada, and will explore the ...
... hospital superbugs can make poisons similar to those found ... scientists heard today (Monday 8 September 2008) at the ... week at Trinity College, Dublin. The toxins are ... called biofilms, which are up to a thousand times ...
... arsenic pollution have discovered a living sensor that can ... can clean up arsenic spills even in previously untreatable ... at the Society for General Microbiology,s Autumn meeting being ... Giant Mine in Canada is in the sub-arctic. It ...
Cached Biology News:Arbor Vita and WRAIR sign CRADA for traumatic brain injury collaboration 2Rattlesnake-type poisons used by superbug bacteria to beat our defenses 2Rattlesnake-type poisons used by superbug bacteria to beat our defenses 3Living sensor can warn of arsenic pollution 2
(Date:7/29/2014)... WA (PRWEB) July 29, 2014 ... IRB services, has been awarded accreditation by the ... for its Lean Six Sigma Deployment Program. ... waste and improve performance. , Quorum’s Lean Six ... the Accredited Deployment Program designation. The designation is ...
(Date:7/29/2014)... The prestigious "Discovery or Exploration in History Award" ... Juliana Hillis and Kaylie O’Connell, students at Stoneham High ... Egg, Everything: America’s First IVF Baby". This project was ... History Day program during a week-long final competition judged ... D.C. , The growing popularity of the assisted reproductive ...
(Date:7/28/2014)... A new method of building materials using light, developed ... day enable technologies that are often considered the realm ... devices. , Although cloaked starships won,t be a ... have developed for constructing materials with building blocks a ... to control the way that light flies through them, ...
(Date:7/28/2014)... MD (PRWEB) July 28, 2014 ... personalized medicine, will be exhibiting data and research conducted ... International Spine Intervention Society’s (ISIS) 22nd Annual ... 3rd, at the Hyatt Regency, in Orlando, Florida. ... knowledge and clinical competence of physicians who care for ...
Breaking Biology Technology:Quorum Review IRB Accredited by IASSC for Lean Six Sigma Deployment Program 2Quorum Review IRB Accredited by IASSC for Lean Six Sigma Deployment Program 3In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 3Building 'invisible' materials with light 2Proove Biosciences Exhibits Industry Leading Data and Research at International Spine Intervention Society’s 22nd Annual Scientific Meeting 2
... Rich Schifreen, vice president of research products at Mirus-Bio ... operate in different fields of biotechnology. Platypus ... moving toward commercializing a new liquid crystal technology. ... , ,Schifreen joined Mirus in 2005. Before that, he ...
... Wis. Sonic Foundry, Inc. , said ... for the Blackboard Learning System , a course ... government institutions. , ,With the Mediasite "building block," a ... meeting in their web browser. Mediasite synchronizes video with ...
... said they work together so well because they know they ... The president and CEO of Alliant Energy said ... must be "joined at the hip" if information technology is ... a keynote address Thursday at the Fusion 2006 CEO-CIO ...
Cached Biology Technology:CEOs and CIOs must be 'joined at the hip' 2CEOs and CIOs must be 'joined at the hip' 3
PEG 8000, Molecular Biology Grade...
Mouse Iduronate 2-Sulfatase Affinity Purified Polyclonal Ab Keywords: Sulfatases, Iduronate 2-Sulfatase, Mucopolysaccharidosis, Hunter Syndrome, Glycobiology Protein Family: Proteoglycan Regu...
Request Info...
Mouse Limitin MAb (Clone 183727)...
Biology Products: