Navigation Links
Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes
Date:4/24/2009

1. Abstract: http://asa.aip.org/web2/asa/abstracts/search.may09/asa809.html


6) THE PECULIAR HYENA'S LAUGH

To human ears, the laughs of individual hyenas in a pack all sound the same: high-pitched and staccato, eerie and maniacal. But every hyena makes a different call that encodes information about its age and status in the pack, according to behavioral neurologists from the University of California, Berkeley and the Universit de Saint-Etienne, France. They have developed a way to identify a hyena by picking out specific features of its giggle.

The hyena does not laugh when it is having a good time. Rather, field biologists have noticed that hyenas make the sound when competing for food. The giggle is a sign of frustration, a call made by a subordinate animal when dominated by one of its peers.

To find meaning in the giggle, Nicolas Mathevon and his colleagues analyzed sounds made by 17 spotted hyenas kept in captivity. They developed an algorithm that can successfully identity an individual in the pack about half the time, by looking at the timbre and quality of a single note in its giggle. "It's like telling singers apart by having them sing one note and listening to the quality of that note," says Mathevon. Their analysis also shows that the pitch of the giggle drops for older animals, and the giggles of animals that tend to be dominant are less variable. The next step will be to play different kinds of giggles to hyenas and test how the animals respond.

The talk "The hyena's laugh as a multi-informative signal" (4pAB3) by Nicolas Mathevon is at 3:30 p.m. on Thursday, May 21. Abstract: http://asa.aip.org/web2/asa/abstracts/search.may09/asa913.html


7) SUPPLE WAVES IN CHEESE AND SKIN

When acoustic waves propaga
'/>"/>

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

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Related biology news :

1. Nitrous oxide: definitely no laughing matter
2. 1 person out of every 1,000 has synaesthesia, in which an individual can smell a sound
3. The art of using science to inform ecosystem restoration in Puget Sound
4. Deep-sea sharks wired for sound
5. New 3-D ultrasound could improve stroke diagnosis, care
6. Sounding out heart problems automatically
7. If a street tree falls... what does it take to make sound policy?
8. Anti-tumor therapy with endoscopic ultrasound may fight cancer more safely and effectively
9. Bats pick up rustling sounds against highway background noise
10. Alternative to burning: environmentally sound disposal for wood chips
11. Effects of anthropogenic sound on marine mammals -- a research strategy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has announced ... America Perimeter Security Systems Market" report to their ... The North American perimeter security market is estimated ... to 2019. Although the U.S. market holds a larger ... is expected to grow at a higher CAGR of ...
(Date:12/17/2014)... , Dec. 15, 2014  HITLAB SM ... Practices (GCP) audit to confirm its adherence to ... This accomplishment enables HITLAB to conduct regulated smart ... highest principles for patient safety and research quality. ... healthcare access, quality, and delivery with innovative technology," ...
(Date:12/11/2014)... --Research and Markets , ... ) has announced the addition of the ... to their offering. One major ... technology. With continuous advances in technology, it is ... standard that meets the needs and expectations of ...
Breaking Biology News(10 mins):Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... Center may have a new way to stop and even ... a third of all adults, some of them repeatedly. ... able to sense the presence of E. coli bacteria hiding ... process that then kicks them out. Knowing how the ...
... two different scents simultaneously, the brain processes them separately ... finding by researchers at Rice University in Houston is ... system. The study was published online today by the ... the Sept. 29 print edition. "Our discovery opens ...
... DURHAM, N.C. A new method for attaching ... to improve protein drugs significantly. Bioengineers at Duke ... animal model that the newly created protein-polymer combinations, known ... unprotected protein. The scientists say they are encouraged ...
Cached Biology News:Nostrils alternate to process competing odors 2Novel polymer could improve protein-based drugs 2Novel polymer could improve protein-based drugs 3
(Date:12/24/2014)... 2014   BioLife Solutions , Inc. (NASDAQ: ... of proprietary clinical grade hypothermic storage and ... shipping products for cells and tissues  ("BioLife" or ... 2015 Annual Meeting of Stockholders on May 4, 2015 ... for the Annual Meeting represents a change of more ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 ... series is designed to introduce cutting edge ... users and partners of platform upgrades. This ... benefits; empowering users in their quest to ... tools. , According to SoundConnect’s Marketing Manager, ...
(Date:12/24/2014)... Nashville, Tenn. (PRWEB) December 23, 2014 ... Hill was elected treasurer for the American Society ... to advancing knowledge and research in reproductive medicine. ... fills a seat on the executive board and will ... , Dr. Hill has actively supported ASRM since ...
(Date:12/24/2014)... Texas , Dec. 23, 2014 ... company focused on gynecologic disease, announced today that ... Schuler , Birchview Fund LLC and several Vermillion ... of unregistered shares of Vermillion,s common stock and ... stock in a private placement.  ...
Breaking Biology Technology:BioLife Solutions Sets Date for Annual Meeting of Stockholders 2SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5
... for Chronic Pain IndicationsLA JOLLA, Calif., Feb. 11 ... ) today announced that oral administration of NGX426, ... well-tolerated in healthy male and female subjects when ... completion of this Phase I trial demonstrating the ...
... Mach One Corporation (Pink Sheets: MNCN), a global ... positive, long term benefit to the agricultural and consumer ... agreement to acquire Modular Process Constructors LLC.The purchase price ... with a conversion price of .50 per share will ...
... names that better reflect the unique properties and industry-leading characteristics of ... ... 2009 -- Zeus, Inc. announces new product name changes that signify ... unaltered in composition and processing. They remain the same quality ...
Cached Biology Technology:First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 2First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 3First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 4Mach One Executes Definitive Agreement to Acquire Biopharmaceutical Design & Engineering Firm 2Zeus Announces Product Name Changes 2
Anti-Src-Like Adaptor Protein-2 AVOID FREEZE/THAW CYCLES. Recognizes the ~25 and ~28 kDa forms SLAP-2....
... media for spontaneous ligand immobilization can be coupled ... antigen, or receptor to create an affinity matrix ... couple ligands via primary amines. Affi-Gel 10 gel ... 6.5 to 11; Affi-Gel 15 gel couples acidic ...
pH-dependent fluorescence; Maximum intensity observed in basic solutions....
Anti-Chicken IgY, (IgG) F(ab')2 Fragment Specific....
Biology Products: