Navigation Links
Scientists discover the largest assembly of whale sharks ever recorded
Date:5/25/2011

Whale sharks (Rhincodon typus) are often thought to be solitary behemoths that live and feed in the open ocean. Scientists at the Smithsonian Institution and colleagues, however, have found that this is not necessarily the case, finding that whale sharks can be gregarious and amass in the hundreds to feed in coastal waters.

Aggregations, or schools, of whale sharks have been witnessed in the past, ranging from several individual sharks to a few dozen. However this new research, which involved both surface and aerial surveys, has revealed an enormous aggregation of whale sharksthe largest ever reportedwith up to 420 individuals off the coast of the Yucatn Peninsula in Mexico. What brings them together is food.

"Whale sharks are the largest species of fish in the world, yet they mostly feed on the smallest organisms in the ocean, such as zooplankton," said Mike Maslanka, biologist at the Smithsonian Conservation Biology Institute and head of the Department of Nutrition Sciences. "Our research revealed that in this case, the hundreds of whale sharks had gathered to feed on dense patches of fish eggs."

While whale sharks may seem conspicuous as the heaviest and longest of all fishes, growing more than 40 feet long, there is still much that is unknown about them. They have a very widespread distribution, occurring in all tropical and sub-tropical regions of the ocean around the world. Understanding this filter-feeder's diet is especially important since food sources determine much of the whale shark's movement and location.

During the dozens of surface trips that team members made to the aggregation, called the "Afuera" aggregation, they used fine nets to collect food samples inside and immediately outside the school of feeding whale sharks. Scientists then used DNA barcoding analysis to examine the collected fish eggs and determine the species. They found that the eggs were from little tunny (Euthynnus alletteratus'/>"/>

Contact: John Gibbons
gibbonsjp@si.edu
202-633-5187
Smithsonian
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Jefferson scientists deliver toxic genes to effectively kill pancreatic cancer cells
2. Scientists identify novel inhibitor of human microRNA
3. Argonne scientists peer into heart of compound that may detect chemical, biological weapons
4. MU scientists go green with gold, distribute environmentally friendly nanoparticles
5. Scientists identify gene that may contribute to improved rice yield
6. Scientists discover why a mothers high-fat diet contributes to obesity in her children
7. MU scientists see how HIV matures into an infection
8. Earth scientists keep an eye on Texas
9. Thinking it through: Scientists call for policy to guide biofuels industry toward sustainability
10. Scientists identify a molecule that coordinates the movement of cells
11. Scientists Find new migratory patterns for Mediterranean and Western Atlantic bluefin tuna
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists discover the largest assembly of whale sharks ever recorded
(Date:9/29/2014)... that the exposure to tar tended to be lower ... Similarly, exposure to nicotine tended to be lower. ... cigarette in several countries around the world. Previous studies ... in the smoke of these cigarettes are lower than ... chemicals in the smoke are not necessarily linked to ...
(Date:9/29/2014)... According to a NASA story from 2009, "human activities in ... fire emissions issue. Palm oil is increasingly grown for use ... fats in processed foods. It has become the most widely ... in recent years to surpass that of soybean oil. , ... has to be cleared to grow the crop, and the ...
(Date:9/29/2014)... team says recently identified radiation detection properties of a ... for homeland security and medical advances. , In a ... of Optics Letters , UT Arlington Physics Professor ... to fabricate transparent nanoscintillators by heating nanoparticles composed of ... formed. A scintillator refers to a material that ...
Breaking Biology News(10 mins):Slim cigarette smokers not exposed to more harmful chemicals 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 3
... 2008The 2008 American Society for Microbiology (ASM) BD ... presented to Stephen C. Edberg, Professor, Department of ... of Medicine, and Director, Clinical Microbiology Laboratory, Yale-New ... award recognizes a distinguished scientist for research accomplishments ...
... be the first recipient of a prestigious award given by ... Meeting of the Ecological Society of America on August 3. ... an outstanding record of informing their political decision-making with ecological ... figure that has a sharp appreciation for local and global ...
... 28, 2008The 2008 American Society for Microbiology (ASM) ... is presented to Steven A. Rosenberg, Chief of ... Services University of the Health Sciences, and Professor ... and Health Sciences. Sponsored by Abbott Laboratories Diagnostics ...
Cached Biology News:American Society for Microbiology honors Stephen C. Edberg 2American Society for Microbiology honors Steven A. Rosenberg 2
(Date:9/30/2014)... Back in the 1970’s, many companies calculated their office ... included space for circulation and file storage. “It was ... Nidea Corporate Real Estate / ITRA Global , a ... however, 250 square feet per employee became the norm. ... 175 to 225 square feet, and over the next few ...
(Date:9/29/2014)... of diagnostics today, with imaging techniques like MRI ... NMR (nuclear magnetic resonance) increasing steeply over the ... resolution and quality still limit these techniques because ... is hyperpolarization, which involves injecting the patient with ... the distribution and fate of specific molecules in ...
(Date:9/29/2014)... Research and Markets  has announced the ... & Services, End-User , Application - Global Forecast to ... The global oligonucleotide synthesis market is expected to reach ... growing at a CAGR of 9.8% from 2014 to ... the basis of products and services, applications, end users, ...
(Date:9/29/2014)... involve a range of resource and environmental problems. ... resin and a clever recycling strategy, Uppsala researchers ... alternative. Their study will be presented soon in ... think our discovery can open several doors to ... the future, says Daniel Brandell, Associate Professor at ...
Breaking Biology Technology:ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 3A safer approach for diagnostic medical imaging 2A safer approach for diagnostic medical imaging 3Oligonucleotide Synthesis (Diagnostics, PCR, QPCR, Gene Synthesis, NGS, DNA, RNAi) Market - Global Forecast to 2019 2Oligonucleotide Synthesis (Diagnostics, PCR, QPCR, Gene Synthesis, NGS, DNA, RNAi) Market - Global Forecast to 2019 3Smart, eco-friendly new battery to solve problems 2
... CAMBRIDGE, Mass., Jan. 13 Verenium Corporation,(Nasdaq: ... the development of next-generation cellulosic,ethanol and high-performance ... compliance with the continued listing requirements of ... that it had fallen out of,compliance with ...
... January 15th at 1:00PM PTNEW YORK, Jan. 13 ... announced that Michael S. Weiss, the Company,s Chairman and ... J.P. Morgan 27th Annual Healthcare Conference being held in ... Thursday, January 15th at 1:00pm PT and will be ...
... Jan. 13 Burnham Institute for Medical ... and license agreement with Johnson & Johnson ... The agreement is Burnham,s first broad-based partnership ... agreement, Burnham will provide J&JPRD with access ...
Cached Biology Technology:Verenium Regains Compliance With Nasdaq Continued Listing Requirement 2Verenium Regains Compliance With Nasdaq Continued Listing Requirement 3Keryx Biopharmaceuticals to Present at the J.P. Morgan 27th Annual Healthcare Conference 2Burnham Announces Assay Development and License Agreement with Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 2
Human SDNSF/MCFD2 Biotinylated Affinity Purified PAb...
... Nucleon HT, 1 kit. Facilitates the ... paraffin-embedded sections and hard tissue requiring proteinase ... high quality DNA from 50 preparations of ... Category: DNA/RNA Synthesis & Purification, Purification and ...
Homo sapiens alcohol dehydrogenase 5 (class III), chi polypeptide (ADH5), mRNA....
Phospho-p70 S6 Kinase (T229) Affinity Purified PAb...
Biology Products: