Navigation Links
Highlights from major acoustical science and technology conference, Nov. 15-19
Date:11/3/2010

s available upon request and will be posted to ASA's virtual press room shortly before the meeting.

3) Coastal Dolphins Quieter than Thought

Dolphins are thought to be able to communicate with each other over vast expanses of ocean, between distances as far as 15 miles apart. Studies of dolphin whistles have suggested that they should carry that far in water, which transmits sound much better than air does.

To put this idea to the test, Frants Jensen of Aarhus University in Denmark dropped underwater microphones (hydrophones) into coastal waters near Bunbury, Australia and recorded the loudness of bottlenose dolphins. By combining this data with measurements of the background noise and how sound travels through water, he estimated that these dolphins would only be able to hear each other from a few hundreds of meters apart.

"It's the first time we've measured the source levels -- the loudness of the whistles -- in these tropical areas," says Jensen.

Compared to the open ocean, the coastal waters of Australia are fairly loud, with snapping shrimp and vessel noise crowded into the same frequencies that the dolphins use to communicate.

The range at which an animal can communicate is likely to have an effect on its social structure, says Jensen. Baleen whales and elephants, for instance, can talk to each other over vast distances, which is thought to allow them to stay in constant contact and easily find each other.

These dolphins' limited range of communication may be one reason they live fairly solitary lives in more fluid societies.

"Dolphins move a lot around in this area but don't associate closely with many other individuals," says Jensen. "Some males have alliances and swim together consistently for their lifetime, while females are a lot more individual and associate mostly with their own calves over time."

The talk "Bottlenose dolphin shortrange communication in a shallow
'/>"/>

Contact: Jason S. Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

0

GOOD

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13

Related biology news :

1. 2010 AAO-HNSF new research highlights: Tuesday, Sept. 28, 2010
2. 2010 AAO-HNSF new research daily highlights: Sunday, Sept. 26, 2010
3. July 2010 Geology and GSA Today highlights
4. 5-year report highlights status of Washingtons forest resources
5. Selected highlights of the research being presented at the Experimental Biology 2010 meeting
6. Study highlights forest protected areas as a critical strategy for slowing climate change
7. Society of Interventional Radiology highlights medical advances, new discoveries
8. Study highlights sustainable footprint of chemical companies
9. Glacier-melting debate highlights importance of satellites
10. AGU journal highlights -- January 21, 2010
11. Conference highlights impact of unsettled summer weather on UK marine life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2013)... have developed a novel technique that can detect molecular ... that is one of the most important, though time-consuming, ... a paper in Nature , post-doctoral researcher David ... Schnell of the Center for Free-Electron Laser Science (CFEL) ... finely-tuned microwave fields to identify molecular variants apart, and ...
(Date:5/22/2013)... Bethesda, Md. (May 22, 2013)The omega 3 fatty acids ... against cardiovascular diseaseso much so that the American Heart ... fish a week, particularly fatty varieties rich in omega ... remains a mystery. In a new study, scientists led ... light on this phenomenon by providing evidence that fish ...
(Date:5/22/2013)... The discovery of potential environmental and human health ... batteries each year has led scientists to recommend ... reuse of lithium-ion (Li-ion) battery materials. That,s the ... journal Environmental Science & Technology . , ... Li-ion batteries have become mainstays for powering everything ...
Breaking Biology News(10 mins):Detecting mirror molecules 2Detecting mirror molecules 3Fish oil may help the heart beat mental stress 2
... more than a breath freshener it could spot head ... Cancer Center. Their new study of a mouth rinse ... for screening those at high risk, including heavy smokers and ... at Johns Hopkins asked 211 head and neck cancer patients ...
... In the January 1st issue of G&D, Drs. Thomas ... into the degradation of mammalian histone,mRNA. Histone mRNA ... but the,mechanism by which this occurs has remained elusive, ... structure rather than the,canonical 3, poly(A) tail. Drs. ...
... -- A research team at Weill Cornell Medical College in ... crucial to the production of an immune system cytokine called ... important "missing link" in a biochemical pathway that,s long been ... to cancer and AIDS. "IL-10 production has to be ...
Cached Biology News:'Swish-and-spit' test accurate for cancer 22 genes are important key to regulating immune response 22 genes are important key to regulating immune response 3
(Date:5/24/2013)... Many factors impact tissues targeting such as ... at the blood-tissue barrier. Even when tissue disposition is ... the tissue rather than the total tissue concentration. , ... to guide lead optimization, predict in vivo activity in ... may impact the likely human clinical dose. , In ...
(Date:5/24/2013)... WI (PRWEB) May 24, 2013 ... the discovery and development of calcium-binding proteins to ... of safety assessment study of apoaequorin ... international journal published for the British Industrial Biological ... study was to investigate potential adverse effects, if ...
(Date:5/23/2013)... 2013 Venaxis, Inc. (Nasdaq:   APPY), an ... FDA clearance and commercializing its rapid, protein biomarker-based appendicitis ... an underwritten public offering of 10,000,000 shares of its ... of its common stock at an exercise price of ... of $1.25 per share and related warrant.  Venaxis has ...
(Date:5/23/2013)... 23, 2013 Graphite Metallizing Corporation ... bushings mounted in stainless steel pillow blocks. This ... GRAPHALLOY with the application and installation versatility of ... Blocks work exceptionally well when submerged in ... liquids such as acids, alkalies, hydrocarbons, black liquor, ...
Breaking Biology Technology:DMPK for Targeted Tissue Delivery: Solutions for the Most Challenging Part of Outsourcing, New Life Science Webinar Hosted by Xtalks 2Safety Assessment Study of Apoaequorin Published in Food and Chemical Toxicology 2Venaxis Announces Pricing of Offering of Common Stock and Warrants 2Venaxis Announces Pricing of Offering of Common Stock and Warrants 3Graphite Metallizing Now Offers GRAPHALLOY® Stainless Steel Pillow Blocks for Success in Submersible Applications 2Graphite Metallizing Now Offers GRAPHALLOY® Stainless Steel Pillow Blocks for Success in Submersible Applications 3
... Nov. 8 Kosan Biosciences,Incorporated (Nasdaq: KOSN ) today ... 30, 2007. Net loss for the quarter and nine ... or $0.26 per share and $0.46 per share,compared to a ... and,$0.76 per share, in the same periods last year. ...
... and the Aflac Cancer Center for ... against pediatric cancer., COLUMBUS, Ga., Nov. 8 Last ... and the Aflac Cancer Center and,Blood Disorders Service at Children,s ... Corporate Citizenship Award. During a,prestigious ceremony hosted by television personality, ...
... Inc. (Nasdaq: MGRM ) announced today that William ... corporate overview at the Piper,Jaffray 19th Annual Healthcare Conference ... at the Pierre Hotel in New York. To ... log on to http://www.monogrambio.com and go to ...
Cached Biology Technology:Kosan Announces Third Quarter 2007 Financial Results 2Kosan Announces Third Quarter 2007 Financial Results 3Kosan Announces Third Quarter 2007 Financial Results 4Kosan Announces Third Quarter 2007 Financial Results 5Kosan Announces Third Quarter 2007 Financial Results 6Kosan Announces Third Quarter 2007 Financial Results 7Aflac Honored with Corporate Citizenship Award 2Aflac Honored with Corporate Citizenship Award 3Monogram Biosciences to Present at the Piper Jaffray 19th Annual Healthcare Conference 2
With L-glutamine and potassium bicarbonate. Sterile, Insect cell culture tested...
Matrix for protein MALDI-MS...
A set of five proteins which can be used to calibrate a Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) or Electrospray Ionization (ESI) mass spectrometer....
... of Grace's medium were developed in several ... Many of these modifications were developed by ... cells derived from the cabbage looper,Tricoplusia ni. ... TNM-FH. The medium when properly supplemented has ...
Biology Products: