Navigation Links
Study sheds new light on dolphin coordination during predation
Date:10/21/2008

p>

Initially a small group of about 20 dolphins would swim side-by-side in a straight line until finding concentrations of prey in this case, lanternfish. When they got to within five meters of their prey, they would pull into a tight circular formation and sequentially swim up and down vertically, in essence, doing "the wave" like fans at a sporting event, Benoit-Bird said.

"They were using their bodies like a plow," she said. "We're not sure if they were creating a pressure barrier or trying to confuse the prey. But the result among the lanternfish was chaos."

As the lanternfish became concentrated, the dolphins tightened their circle and formed 10 pairs. The pairs at one o'clock and seven o'clock would move in, feed for 15 seconds, and retreat back to the circle. Then the pairs at two o'clock and eight o'clock would do likewise.

The feeding would last for about five minutes, during which time each dolphin got two opportunities to feed, and then the group rose as one to the surface to breathe, maintaining their circle. The dolphins would take one breath, Benoit-Bird said, and then dive down and begin the process anew.

"If one or two individual dolphins would break the circle or head to the surface to breathe, it breaks their whole system up," Benoit-Bird said. "They never did. So then you have to ask: How do they communicate with each other, and how do they pass on that knowledge to their young?"

The researchers are still working on the latter puzzle, but their acoustical monitoring study found that much of what scientists had assumed about dolphin communication may, in fact, be wrong in this species. In a companion article also published in Acoustical Society of America, the researchers describe how they used underwater hydrophones to listen to the dolphins during their feeding forays.

Dolphins are often vocal and their use of frequency-modulated whistles was thought by many to cue their coordinated beh
'/>"/>

Contact: Kelly Benoit-Bird
kbenoit@coas.oregonstate.edu
541-737-2063
Oregon State University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... explored the type and number of connections in transcription ... on robustness in a study published in PLOS ... that the assortativity signature contributes to a network,s resilience ... varying the out-out assortativity of TFN models has a ... other three types of assortativity," said Dov A. Pechenick, ...
(Date:8/29/2014)... marine phytoplankton, such as the prolific bloomer Emiliania ... researchers have discovered. The finding contradicts the common view ... microbes depend on scarce supplies of thiamine in the ... to think about the ocean," says CIFAR Senior Fellow ... Journal paper with CIFAR fellows John Archibald ...
(Date:8/29/2014)... USA - The rise of the Tibetan plateau -- ... -- is important for both its profound effect on ... study published in GSA Bulletin , Katharine Huntington ... isotope thermometry -- using modern and fossil snail shells ... in southwestern Tibet. , Views range widely on ...
Breaking Biology News(10 mins):Assortativity signatures of transcription factor networks contribute to robustness 2Not all phytoplankton in the ocean need to take their vitamins 2Not all phytoplankton in the ocean need to take their vitamins 3Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7
... - you being in a car wreck or being bitten by ... win a free trip to the beach. It's really no contest, ... a wreck are far greater than being a shark's lunch, says ... studied sharks for years. , Worldwide, about one million people a ...
... Dutch researcher Nicole de Voogd has investigated the ... of these sponges contain substances of interest to ... to obtain, there is growing interest in alternative ... For her research, De Voogd described three new ...
... like to exercise? Maybe you could blame it on ... couch potato who suddenly woke up to the fact ... belong to your genes. , Exercise research traditionally has ... genetic mechanisms. But physiologists wondered what would happen if ...
Cached Biology News:New HIV drug candidate developed in Sweden 2Sponges as drugs 215 generations of untrained jocks, couch potatoes show big physiological adaptations 215 generations of untrained jocks, couch potatoes show big physiological adaptations 3
(Date:8/29/2014)... 29, 2014 A major challenge before ... start-up dense realm of Boston-Cambridge, is gaining visibility that ... James Sherley, the Director of Boston’s Adult Stem Cell ... and national visibility of his company an important priority ... In addition to a social media marketing campaign ...
(Date:8/28/2014)... Best Sanitizers, Inc., the first company to ... asks food processors and food handling professionals to prepare ... currently using to Best Sanitizers’ Alpet® E3 Plus ... fighting cross-contamination and the spread of pathogens in the ... key criteria that make a hand sanitizer most effective, ...
(Date:8/28/2014)... , Aug. 28, 2014 ... a new market research report ... Whole Exome Sequencing ... (Library Preparation, Target Enrichment), by ... by Synthesis), by Application (Cancer, ...
(Date:8/28/2014)... WA (PRWEB) August 28, 2014 Sterlitech ... Filtration’s polymeric membranes to its stable of products ... available molecular weight cut-offs and include membrane filters with ... steady increase in customer demand for our membrane process ... greater variety of flat sheet membranes,” explains Sterlitech President ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2
... - John McNeish gives it a light-hearted spin when he ... institutions in America. , ,"The polls say only 3 percent ... of drug companies," Pfizer executive McNeish told a group of ... Park last week. "That means only one or two of ...
... event. Here extreme manufacturing meets extreme consumption. The sidekick nations ... The remaining nations pray and hope that the mating of ... imbalances are way out of synch; envy and jealousy are ... nations. , ,Somewhere out there is a land many ...
... Memorial Health Care in Memphis, Tenn., will install ... hospitals and the organization's corporate office under a $6 ... , ,The wireless distribution system will provide wireless coverage ... broadband infrastructure. The system, which will be installed in ...
Cached Biology Technology:The 3 percent solution: Unpopular drug companies still push discovery 2The 3 percent solution: Unpopular drug companies still push discovery 3The world's largest factory 2The world's largest factory 3The world's largest factory 4
... The P5T Series Short Stroke Thrust ... stroke applications where mounting envelopes are limited ... wear bands and internal bumpers provide millions ... applications., Choice of composite bushings or ...
... Filter Plates are offered in several versions. ... depth filter plates are ideal to prepare ... is simple, versatile, and necessary to prevent ... 10 um glass fiber and 20 um ...
... CyScribe Post-Labeling Kit with CyScribe ... the generation and purification of Cy3- ... together for complete cDNA labeling and ... used for performing labeling reactions with ...
CASPR (H-66)...
Biology Products: