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:10/29/2014)... kind of stem cell, those referred to as ,facultative, ... is apparently nothing that differentiates these cells from the ... they retain the capacity to become stem cells again. ... an organ that hosts cells that stimulate tissue growth, ... case of a transplant. Knowledge of the underlying ...
(Date:10/29/2014)... October 27, 2014 — Cambridge, MA and Hebei, China ... the complete, high quality sequencing of the Jujube genome. ... Rhamnaceae family, and the Jujube genome is particularly difficult ... other complicating factors. It is the first time that ... sequenced. This study has been recently published in ...
(Date:10/29/2014)... PA, October 29, 2014 – Ghrelin is a hormone ... food intake. Alcohol is commonly viewed as a psychoactive ... also a highly caloric food. , This knowledge, ... the hypothesis that ghrelin has the potential to stimulate ... tested this in humans and found that, as they ...
Breaking Biology News(10 mins):A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2BGI Tech and Hebei Agricultural University complete the genome sequencing of the jujube tree 2Ghrelin stimulates an appetite for drinking alcohol 2
... Then it was Jeopardy. Now computers are at ... automate the scientific process itself. An interdisciplinary team ... Research Corporation, Inc., has taken a major step toward ... raw experimental data from a biological system and derive ...
... -- An eight-year study has concluded that increasingly frequent ... have pushed some aquatic desert ecosystems into "catastrophic regime ... The findings, just published in the journal Freshwater ... aquifers for urban water use, and land management may ...
... of Naval Research scientist Dr. Roshdy George S. Barsoum ... for the development of a revolutionary coating material that ... HybridSil Fire/Blast, acts like a force field that surrounds ... ballistic- and fire-resistant. "You can take an existing ...
Cached Biology News:Robot biologist solves complex problem from scratch 2Robot biologist solves complex problem from scratch 3Severe drought, other changes can cause permanent ecosystem disruption 2Severe drought, other changes can cause permanent ecosystem disruption 3Spray-on protective coating wins 'R&D 100' Award 2
(Date:10/30/2014)... Spartan Bioscience announced today that Health Canada ... It detects CYP2C19 genetic mutations in less than 60 ... RX CYP2C19 System is the first near-patient DNA test ... Due to the system’s ease of use, Health Canada ... professionals such as doctors, nurses, pharmacists, and laboratory technicians, ...
(Date:10/30/2014)... Grace Century portfolio project, Provia Laboratories ... of the Board, to the National Stem Cell Ethics ... made by the Ministry of Health on behalf of the ... , More than a year after Bahamian Parliament passed the ... Perry Christie said the government has completed the accompanying regulations ...
(Date:10/30/2014)...  Regado Biosciences, Inc. (Nasdaq: RGDO ), ... and live audio webcast on Thursday, November 6, 2014, ... 2014 financial results. Interested participants and investors ... for domestic callers or (412) 902-4276 for international callers. ... investor relations section of the Regado website at ...
(Date:10/27/2014)... Ryan Carfley , Managing Partner at Personify ... Bryan Hamilton, the publisher of the Triangle Business Journal, and ... Research Triangle region of North Carolina. , Just a few ... include the role of social media in recruitment, recruiting ... the unique role that Millennials play in the workplace today. ...
Breaking Biology Technology:Health Canada approves first near-patient DNA test for personalized medicine 2Health Canada approves first near-patient DNA test for personalized medicine 3Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3Regado Biosciences to Provide Third Quarter 2014 Financial Results 2Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 2Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 3
... FRANCISCO, Aug. 30 BioSpace, the leading ... along with BayBio unveiled this,morning the 11th ... The,campaign features both a regional promotional Hotbed ... conjunction with the economic and,workforce development initiatives ...
... ICx Technologies, a developer of,advanced technology solutions for ... detection business unit, based in Albuquerque, has been,awarded ... of Homeland Security,(DHS) to continue development of a ... granted the award to commence Phase II activities ...
... PRINCETON, N.J., Aug. 30 Medarex, Inc.,(Nasdaq: MEDX ... at the,Thomas Weisel Partners Healthcare Conference at 11:30 AM ... being held at the Four,Seasons Hotel in Boston, Massachusetts. ... for replay through the Webcast page in,the Investor Relations ...
Cached Biology Technology:BioSpace and BayBio Launch 11th Edition of Biotech Bay(TM) Hotbed Map Campaign 2ICx Awarded $1.5 M Contract by Department of Homeland Security for Development of Next Generation Bio Aerosol Systems 2Medarex to Present at Thomas Weisel Partners Healthcare Conference 2007 2
Cell Culture Flask, 25 cm, tissue-culture treated polystyrene...
MAb to HLA, Class II-DR+DP Dry Ice: No Preservative: NaN3 Availability When Not in Inventory: 14-21 Business Days...
Cell Culture Flask, 25 cm, tissue-culture treated polystyrene...
... Disposable. Virgin, optically clear polystyrene with ... alphanumeric coordinates for cell counting. 100% ... is a new product number, created ... If showing no availability yet, please ...
Biology Products: