HOME >> BIOLOGY >> NEWS
New great white shark study has conservation implications

A new study spearheaded by a University of Colorado at Boulder researcher that indicates male great white sharks roam Earths oceans much more widely than females has implications for future conservation strategies for the storied and threatened fish.

Assistant Professor Andrew Martin of CU-Boulders environmental, population and organismic biology department said the research team studied differences in two types of DNA collected from tissue samples of 95 male and female great white sharks. The team concluded that while males disperse widely across ocean basins, females tend to stay in a particular region, perhaps returning to their birth site to reproduce.

Great whites are globally distributed in temperate waters and have been observed in nearly every ocean and sea on the planet. In the study, the researchers compared the genetics of great white sharks from the Australia-New Zealand region and South African coastal zones -- two areas with the greatest abundance of the species.

"These are very rare fish because they are perched at the top of the food chain and because they have been fished very heavily," said Martin. "The nice thing about this study is that we were able to overlay genetic differences on the oceanic geography."

A paper on the subject is being published in the July 12 issue of the weekly science journal, Nature. Co-authors included researchers from the University of Aberdeen, the University of Southern Mississippi, the CSIRO Marine Research Laboratories in Australia, the Natal Sharks Board of South Africa, the National Institute of Water and Atmospheric Research in New Zealand and the Department of Conservation in New Zealand.

The researchers looked at both mitochondrial DNA which is passed down only by the female of the species and particular genes from the cell nucleus passed on by both parents. The mitochondrial results indicated the "female-mediated " gene flow of great whites between differ
'"/>

Contact: Andrew Martin
Andrew.Martin-1@colorado.edu
303-492-2573
University of Colorado at Boulder
11-Jul-2001


Page: 1 2 3

Related biology news :

1. Analysis of biological clock may lead to greater understanding of human disease
2. New England forests at greater risk from air pollution
3. Call for greater involvement of developing world scientists in fight against AIDS
4. Severe depression associated with greater number of nerve cells in thalamus region of brain
5. Device that rapidly detects nerve agents named one of greatest army inventions for 2003
6. CSIRO research in greatest biotech show on earth
7. Why some diabetics are at greater risk for UTIs
8. The great flamingo round-up
9. Prenatal exposure to second-handsmoke greater for disadvantaged children, study finds
10. Taming Jaws: Scientists lift great white sharks from ocean to fit with satellite tags
11. New evidence says Earths greatest extinction caused by ancient meteorite

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


(Date:6/4/2019)... (PRWEB) , ... June 04, 2019 , ... ... today announced the appointment of Susan Murphy as the new President of Molecular ... Sciences?owned by Molecular Devices’ parent company, Danaher Corporation. , Since joining Molecular Devices ...
(Date:6/1/2019)... ... May 31, 2019 , ... ... & Rosati recently invested in BioFactura’s $6M Series B Financing Round. , ... value-added institutional investors who bring significant financial and business resources to bear as ...
(Date:5/31/2019)... ... May 31, 2019 , ... The OilComm ... Houston, TX, announced today that Ben Reiter, Senior Writer at Sports Illustrated and ... October 3rd.     , Reiter predicted the Houston Astros would win the MLB championship ...
Breaking Biology News(10 mins):
(Date:5/31/2019)... ... May 30, 2019 , ... A ... an efficient delivery system for the sustained release of human placental stem cell ... system was able to deliver CM into the injured kidney, where it helped ...
(Date:5/15/2019)... ... May 16, 2019 , ... Emulsifiers are the ... and beverage products rely on these ingredients to create stable quality food that ... This paradigm shift triggers food formulators to seek out alternatives for starches, gums ...
(Date:5/7/2019)... ... May 06, 2019 , ... ... for the growing number of repositories being asked to store cellular products ... the team of contributors who are world leaders, who have shared their expertise ...
(Date:5/2/2019)... ... April 30, 2019 , ... The centuries old practice of brewing beer thrives ... craft breweries, and even home brewing clubs scattered across the nation. , But ... when mastered can produce a superb product. Students at South Dakota School of ...
Breaking Biology Technology:
Cached News: