Navigation Links
New finding shows that mother sharks 'home' to their birthplace to give birth, like salmon and sea turtles
Date:12/5/2013

Research conducted in Bimini in The Bahamas spanning almost two decades shows that female lemon sharks that were born there returned 15 years later to give birth to their own young, confirming this behavior for the first time in sharks. The study began in 1995, and has resulted in the capture, tagging, and release of more than 2,000 baby sharks over the 19-year, ongoing project.

This article, published online on December 5 in the journal Molecular Ecology, entitled, "Two decades of genetic profiling yields first evidence of natal philopatry and long-term fidelity to parturition sites in sharks," was a collaborative effort involving scientists from The Field Museum, Bimini Biological Field Station Foundation, University of Miami and Stony Brook University (SBU). Results suggest that local and international efforts can make a big difference in the struggle to recover the world's coastal shark populations. Sharks have been heavily exploited to supply the Asian restaurants and banquet halls with shark fins, the main ingredient in a highly prized soup of great cultural significance but of no nutritive value.

"We used each shark's individual DNA fingerprint to construct a large family tree," explained Dr. Kevin Feldheim, the A. Watson Armour III Manager of the Pritzker Laboratory for Molecular Systematics and Evolution at The Field Museum and the lead author of the study.

"We found that newborn sharks captured in the mid-1990s left the safety of the islands when they were between five and eight years old. Yet, despite leaving and visiting many other islands in their travels, these sharks 'remember' where they were born after a decade of roving, and are able to find the island again when they are pregnant and ready to give birth," Dr. Feldheim added.

Many researchers had speculated that female sharks have this ability to home back to their birthplace to give birth, but it had never been proven because it is very
'/>"/>

Contact: Cindy Yeast
cdyeast@earthlink.net
202-236-5413
The Institute for Ocean Conservation Science
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Great lakes waterfowl die-offs: Finding the source
2. Findings announced from landmark study on safety of adolescent bariatric surgery
3. Finding psychiatric drugs in the movements of mice
4. Reassuring findings released in national study of influenza vaccine safety in pregnancy
5. Surprise finding reveals how adaptive our immune systems can be
6. Boat noise stops fish finding home
7. New findings on tree nuts and health presented at the Experimental Biology Meeting in Boston, Mass.
8. Surprising findings on hydrogen production in green algae
9. Finding genes for childhood obesity
10. Findings to help in design of drugs against virus causing childhood illnesses
11. The neuroscience of finding your lost keys
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New finding shows that mother sharks 'home' to their birthplace to give birth, like salmon and sea turtles
(Date:10/17/2014)... knowledge regarding Ebola is critical and pertinent for practicing ... global outbreak and epidemic. The Journal, Disaster Medicine ... issue, Ebola Virus and Public Health, to surround the ... this critical societal moment. , On October 17, ... Clinicians . The primer was prepared by Dr. Eric ...
(Date:10/17/2014)... for the first time how bacteria can grow directly ... the opportunity to get tremendous insights into bacteria behavior ... discovered the bacterial growth in chronic lung infections among ... by the immune cells. The researchers discovered the immune ... bacteria, forcing the bacteria to switch to a much ...
(Date:10/16/2014)... human body. Battles are won, lost or sometimes ... stalemate—known as tumor dormancy—can last up to 25 ... is poorly understood. , A new computational ... a Professor of Chemistry at Princeton University, may ... the switch to a malignant state. Published today ...
Breaking Biology News(10 mins):Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2Modeling tumor dormancy 2
... Switzerland June 7, 2008 The Cancer and ... phase II clinical trial showing that 70 percent of ... with galiximab, an investigational anti-CD80 monoclonal antibody, when given ... the study, 44 percent achieved a complete response and ...
... who dig dinosaurs in Eastern Montana will now be ... excavated and before degrading begins. Paleontologists from Montana ... Carolina Museum of Natural Sciences recently bought and renovated ... to Eastern Montana for the summer. The lab ...
... Media Fellows, Wendy Hansen and Maddalena Jackson, are ... part of a 10-week internship from June to August ... Wendy Hansen is a biophysics Ph.D. candidate ... 2008 graduate of Harvey,Mudd College, Claremont, Calif., with a ...
Cached Biology News:Galiximab in combination with rituximab in patients with previously untreated follicular lymphoma 2Dinosaur diggers bring mobile lab, new techniques to Eastern Montana 2Dinosaur diggers bring mobile lab, new techniques to Eastern Montana 3
(Date:10/20/2014)... , Oct. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" ... which brings Q3 orders to $5.8 million and provides a good ... in North America and one in the ... bid new projects at record levels," said Peter Bruijns , ... at the end of Q3 than they have been for any ...
(Date:10/20/2014)... October 20, 2014 OncLive® ... Kimmel Cancer Center at Thomas Jefferson University has ... Through the Strategic Alliance Partnership program, the Sidney ... collaborate to raise awareness of the Center’s cutting-edge ... other projects. Clinicians and other health care professionals ...
(Date:10/19/2014)... OCTOBER 20-22, 2014: The 9th Annual ... take place at the Congress Center Basel, ... now available at http://www.abim.ch . ... from all over the globe will exchange ... products and developments on the world market. ...
(Date:10/19/2014)... The Asia-Pacific Speech Analytics market report defines and ... and forecast of revenue. This market is estimated to ... by 2019, at a Compound Annual Growth Rate (CAGR) ... the TOC of the Asia-Pacific Speech Analytics market report ... It also provides a glimpse of the segmentation in ...
Breaking Biology Technology:Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
... Today, competitors can copy the newest product enhancement, ... back-office process seemingly overnight. Indeed, it seems that ... This realization has led many corporate leaders to ... pursue is to create organizations that can respond ...
... an agreement Thursday with Capital Data, Inc. ... and financial services, according to TeraMEDICA's executive vice ... Data will bundle TeraMEDICA's TI2m archive solution into ... a territory that includes Wisconsin, Minnesota, North Dakota, ...
... , a unit of General Electric Company , ... ultrasound that is expected to increase efficiency for physicians. ... to perform the duties of larger-scale systems but in ... less. The system makes it possible for patients to ...
Cached Biology Technology:Going beyond me, too customer experiences 2Going beyond me, too customer experiences 3Going beyond me, too customer experiences 4TeraMEDICA and Capital Data enter into diagnostic imaging agreement 2GE Healthcare announces new, high-tech 'stethoscope' 2