HOME >> BIOLOGY >> NEWS
Small bone could solve bluefin mystery

COLLEGE STATION, November 8 - As Exhibit A, the ear bone of a tuna is hardly courtroom evidence that could solve a mystery. But in true Colombo style, this tiny piece of the fish's skeleton could be the big answer to a marine riddle.

Texas A&M University at Galveston researchers are studying the otolith - the ear bone about the size of a dime in the bluefin tuna - to see why the numbers of the great fish have been dwindling for the past 25 years.

If you think the bluefin is just another tuna, think again.

It is the largest and most-prized of all tuna types, weighing as much as 1,200 pounds. One bluefin can fetch as much as $50,000 on Asian markets, where its meat is a precious commodity. It's not the type of tuna that ends up on a sandwich - that distinction belongs to other tuna.

"That's one big reason why its stock has decreased. It's probably been overfished," says Dr. Jay Rooker, assistant professor of marine biology who has a multi-year grant from the National Marine Fisheries Service to study the bluefin's habits.

One study shows the number of bluefins in the western Atlantic Ocean has dropped almost 90 percent since the 1970s.

Rooker says what he and his research team want to undercover is the "mixing" rate of bluefin tuna - those that have spawned in one area and then travel great distances, sometimes thousands of miles.

Some bluefin spawn in the Gulf of Mexico and travel as far as the Italian coast, while in the Pacific it is not uncommon for bluefin to spawn near Japan and be found near Mexico.

That's where the otolith comes in.

The piece of bone adds an additional layer each year of the bluefin's life. Distinguishing the otoliths of the Mediterranean bluefin from those from the Gulf of Mexico will tell Rooker several things, among them the age of the fish and its nursery areas.

"The otolith provides age and growth information and will tell us about the bluefin's environm
'"/>

Contact: Keith Randall
kr@univrel.tamu.edu
979-845-4644
Texas A&M University
8-Nov-2001


Page: 1 2

Related biology news :

1. Small, Smac-like molecule encourages death of cancer cells
2. Small animal imaging gives cancer clues
3. Small RNA surmounts large cancer problem
4. Small, cold, & hungry: Ultra-small microbes from 120,000-year-old glacier ice sample
5. Small trial shows daclizumab add-on therapy improves MS outcome
6. Small gene changes in some leukemia patients may explain varying responses to chemotherapy
7. Small amounts of alcohol or anesthetics may damage the developing brain
8. Smallpox in 50-year-old tissues detected by integrated diagnostics approach
9. Small-molecule inhibitors of anthrax lethal factor identified
10. Smallpox in Europe selected for genetic mutation that confers resistance to HIV infection
11. Small-molecule inhibitors of botulinum neurotoxin identified

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/27/2019)... (PRWEB) , ... November 26, 2019 , ... ... patients to their Glen Ellyn, IL practice for Invisalign® treatment. Invisalign ... teeth. , Patients with a misaligned bite, also known as malocclusion, present both ...
(Date:11/22/2019)... ... 21, 2019 , ... The inventors of a new and ... major step forward with that therapy, known as SurVaxM. MimiVax LLC principals Robert ... from Roswell Park in 2012, has entered into a China-exclusive licensing agreement for ...
(Date:11/19/2019)... , ... November 19, 2019 , ... ... and sample preparation, and Bio-Rad Laboratories, Inc. (NYSE: BIO and BIOb), a global ... in which Diagenode will offer Single-Cell ATAC-Seq (scATAC-Seq) Services, featuring Bio-Rad’s Droplet Digital ...
Breaking Biology News(10 mins):
(Date:12/4/2019)... S.D. (PRWEB) , ... December 04, 2019 , ... The ... smaller than a human hair, but its potential impact on the pharmaceutical industry could ... a professor of biological and chemical engineering at South Dakota School of Mines ...
(Date:11/22/2019)... , ... November 21, 2019 , ... Lajollacooks4u is preparing ... and cooking events company already scheduled several of its popular cooking classes and team-building ... , The company’s Holiday Parties have been a favorite for companies of ...
(Date:11/12/2019)... , ... November 12, 2019 ... ... enterprise software solutions for biopharmaceutical R&D, today announced that Immatics Biotechnologies ... adopted Genedata Biologics® to streamline their R&D operations related to ...
(Date:11/9/2019)... (PRWEB) , ... November 08, ... ... of artificial intelligence (AI)-powered technology for use in pathology research, today announced ... liver biopsy samples from patients enrolled in the phase 3 selonsertib studies ...
Breaking Biology Technology:
Cached News: