Navigation Links
Young blue sharks use central North Atlantic nursery
Date:8/13/2014

Blue sharks may use the central North Atlantic as a nursery prior to males and females moving through the ocean basin in distinctly different patterns, according to a study published August 13, 2014 in the open-access journal PLOS ONE by Frederic Vandeperre from University of the Azores, Portugal, and colleagues.

Shark populations typically organize by location and separate by sex and size, but these patterns remain poorly understood, particularly for exploited oceanic species such as the blue shark. The authors of this study employed a long-term electronic tagging experiment to investigate the migratory patterns of blue shark, to investigate how these population patterns change across the species' life history, as well as to assess the existence of a nursery area in the central North Atlantic. Scientists tracked about 35 blue sharks from different life stages for periods of up to ~1,000 days, as they swam through large parts of the ocean basin.

The blue sharks' movement varied individually, but the researchers found patterns and differences in movements and space use throughout the sharks' life. Specifically, they discovered evidence for the existence of a discrete central North Atlantic nursery, where juvenile sharks reside for at least 2 years. After living in the nursery, male and female blue sharks spatially separate: juvenile females seasonally migrated until they shifted toward living in tropical latitudes as they approached maturity, and juvenile males generally expanded their range southward and displayed greater behavioral variation. The authors suggest these results have implications for the sustainable management of this heavily exploited shark, especially in the central North Atlantic, where the presence of a nursery and seasonal overlap and alternation of different life stages coincides with a high fishing mortality.

"For the first time, this study shows the utilisation of a discrete, oceanic nursery in an oceanic shark and how movements change throughout their lives. It offers a unique insight in the ecological adaptations to their open ocean habitat and highlights the challenges for their management," Frederic Vandeperre added.


'/>"/>

Contact: Kayla Graham
onepress@plos.org
PLOS
Source:Eurekalert  

Related biology news :

1. Young loggerhead turtles not going with the flow
2. Prostate cancer in young men -- More frequent and more aggressive?
3. Damon Runyon Cancer Research Foundation grants fellowship awards to 16 young scientists
4. Movement disorders in young people related to ADHD
5. Pew grants 22 young scientists support for biomedical research
6. Damon Runyon Cancer Research foundation awards $4M to 10 top young clinical investigators
7. Nine young scientists awarded by the Genetics Society of America for fruit fly research
8. Long-term childhood poverty contributes to young adult obesity rates
9. Novel antioxidant makes old arteries seem young again, CU-Boulder study finds
10. Functioning of aged brains and muscles in mice made younger
11. Simply being called fat makes young girls more likely to become obese
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Young blue sharks use central North Atlantic nursery
(Date:6/2/2016)... -- Perimeter Surveillance & Detection Systems, Biometrics ... Support & Other Service  The latest report ... analysis of the global Border Security market . ... $17.98 billion in 2016. Now: In November ... software and hardware technologies for advanced video surveillance. ...
(Date:5/16/2016)...   EyeLock LLC , a market leader of ... an IoT Center of Excellence in Austin, ... of embedded iris biometric applications. EyeLock,s iris ... security with unmatched biometric accuracy, making it the most ... EyeLock,s platform uses video technology to deliver a fast ...
(Date:4/28/2016)... FRANCISCO and BANGALORE, India , ... of EdgeVerve Systems, a product subsidiary of Infosys (NYSE: ... provider, today announced a global partnership that will ... way to use mobile banking and payment services. ... is a key innovation area for financial services, but it ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the ... the Supplyframe Design Lab . Located in Pasadena, Calif., the Design Lab’s ... how hardware projects are designed, built and brought to market. , The Design ...
(Date:6/23/2016)...  Blueprint Bio, a company dedicated to identifying, protecting ... has closed its Series A funding round, according to ... "We have received a commitment from Forentis Fund that ... meet our current goals," stated Matthew Nunez . ... complete validation on the current projects in our pipeline, ...
(Date:6/23/2016)... WI (PRWEB) , ... June 23, 2016 , ... ... focused on quality, regulatory and technical consulting, provides a free webinar ... presented on July 13, 2016 at 12pm CT at no charge. , Incomplete ...
(Date:6/22/2016)... 22, 2016 Cell Applications, Inc. and ... to produce up to one billion human induced ... one week. These high-quality, consistent stem cells enable ... and spend more time doing meaningful, relevant research. ... high-volume manufacturing process that produces affordable, reliable HiPSC ...
Breaking Biology Technology: