Navigation Links
UCLA scientists discover ultrasonic communication among frogs
Date:5/11/2009

UCLA scientists report for the first time on the only known frog species that can communicate using purely ultrasonic calls, whose frequencies are too high to be heard by humans. Known as Huia cavitympanum, the frog lives only on the Southeast Asian island of Borneo.

Ultrasounds are high-pitched sounds more than 20 kilohertz (kHz) in frequency, which exceeds the upper limit of sounds detectable by humans and is far higher than the 5 to 8 kHz frequencies most amphibians, reptiles and birds are capable of hearing or producing. Key parts of the ear must be specially adapted to detect ultrasounds.

The frogs can hear sounds up to 38 kilohertz, the highest frequency any amphibian species has been known to hear, the scientists report. Humans can hear up to about 20 kHz and typically talk at 2 or 3 kHz.

While most of the more than 5,000 frog species worldwide have eardrums that are flat on the side of the head, Huia cavitympanum has eardrums recessed in the side of the skull, similar to mammals.

Peter Narins, UCLA distinguished professor of physiological science and of ecology and evolutionary biology, and Victoria Arch, a UCLA graduate student in ecology and evolutionary biology, spent several nights in the remote area where the frogs live.

"We had very little information suggesting that they would be in this location," said Arch, lead author of the study. "We found them our first night out."

The study was published April 29 in the online journal PLoS ONE, a publication of the Public Library of Science, and is available at http://dx.plos.org/10.1371/journal.pone.0005413.

Huia cavitympanum produces some audible calls and others that are entirely ultrasonic.

"You look at the frog and can see it is vocalizing you can tell because their vocal pouches pulsate but you don't hear any sound. It's amazi
'/>"/>

Contact: Stuart Wolpert
swolpert@support.ucla.edu
310-206-0511
University of California - Los Angeles
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Scientists map West coast areas most affected by humans
2. Scientists learn why the flu may turn deadly
3. EMBL scientists develop first fully automated pipeline for multiprotein complex production
4. Neuroscientists discover long-term potentiation in the olfactory bulb
5. March of Dimes awards $250,000 prize to scientists unraveling the causes of muscular dystrophy
6. Scientists shed light on inner workings of human embryonic stem cells
7. Stanford scientists turn adult skin cells into muscle and vice versa
8. Just in time for spring: Scientists find the cellular on and off switch for allergies and asthma
9. Geoscientists meet to discuss Rocky Mountain geology
10. Gladstone scientists identify key factors in heart cell creation
11. Fire is important part of global climate change, report scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... St. Jude Children,s Research Hospital study found that 73 ... doubled their risk of developing metabolic syndrome and related ... The results appear in the current issue of the ... the 1,598 adult survivors of childhood cancer in the ... risk factors like high blood pressure, abdominal obesity, elevated ...
(Date:7/28/2014)... natural virus killers to prevent and treat HIV infection ... inflammatory response these molecules can arouse as they get ... scientists at the Weizmann Institute and the National Institutes ... of these molecules interferons around the time ... of the disease. Their research appeared in Nature ...
(Date:7/27/2014)... vitro study has revealed that nicotine and cotinine, a ... by a certain carcinogen in smoke. , The carcinogen ... tobacco leaves and ultimately ends up in the tobacco ... and liver, where it is activated by a variety ... mice has revealed that nicotine can partially interfere with ...
Breaking Biology News(10 mins):Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3Interfering with interferon 2Nicotine found to inhibit DNA-strand break caused by a certain carcinogen in smoke 2
... battle between the bacterial pathogen Salmonella and the ... at the Biozentrum of the University of Basel has now ... host,s immune system. Their findings are published in the scientific ... is a bacterial infection caused by the pathogen Salmonella ...
... atom located in the vicinity of a molecule can change ... international team of researchers was able to change persistently positions ... by approaching a single copper atom to the molecule. ... simple organic molecule can be switched by approaching a single ...
... or the pipes of an organ, the proteins in the ... Now, a new study provides what researchers say is ... a technique they developed based on terahertz near-field microscopy, scientists ... (HWI) have for the first time observed in detail the ...
Cached Biology News:Typhoid fever -- A race against time 22-proton bit controlled by a single copper atom 22-proton bit controlled by a single copper atom 3The symphony of life, revealed 2The symphony of life, revealed 3
(Date:7/25/2014)... Lawrence Livermore scientists Charles Westbrook and William Pitz ... The World's Most Influential Scientific Minds ." , Westbrook ... were identified by analyzing citation data over the last ... work (2002-2012 and 2012-2013). The two were selected from ... , "This recognition is a great honor for Charlie ...
(Date:7/25/2014)... IN (PRWEB) July 25, 2014 At ... (FAA) has granted a 60-day extension for the public ... the Special Rule for Model Aircraft established by Congress ... of 2012. The 60-day extension establishes the new deadline ... United States Department of Transportation/FAA notice published in the ...
(Date:7/24/2014)... 2014 -- A novel combination of microscopy and data ... Oak Ridge National Laboratory an unprecedented look at the ... and electrochemical properties. , The research team led ... surface of a perovskite manganite, a complex material that ... to understand surface behavior could benefit researchers who are ...
(Date:7/24/2014)... Calif. , July 24, 2014  Asterias ... in the emerging field of regenerative medicine, announced ... of a presentation to investors on Tuesday, July ... PDT.  The presentation will include an overview of ... access the webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at ...
Breaking Biology Technology:Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4FAA Grants Comment Extension at the Request of AMA 2ORNL study reveals new characteristics of complex oxide surfaces 2Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4
... Sept. 23 Though the new USP 797,regulations, ... impact of following the new minimums has the ... warns Steven Wieczorek,Supervisor, Environmental Sciences, Microtest, Inc., ... of USP 797,establishes bi-annual environmental sampling and testing ...
... Sept. 23 Environmental,Tectonics Corporation,s (Amex: ETC ... the sale and placement of two BARA-MED(R) XD,Monoplace ... Facility was established in Corpus Christi, Texas, in ... medical center in the region. The,facility offers South ...
... Campaign Highlights Signs, Symptoms, Impact on Families of von ... Willebrand ... are affected by the most common hereditary bleeding disorder, von,Willebrand disease (VWD), ... but according to the Centers for Disease Control and,Prevention (CDC) it takes ...
Cached Biology Technology:New USP 797 Regulations May Create New Hazards for Compounding Pharmacy Directors 2New USP 797 Regulations May Create New Hazards for Compounding Pharmacy Directors 3Environmental Tectonics Corporation Announces a Multiple Sale for Monoplace Hyperbaric Chambers 2Environmental Tectonics Corporation Announces a Multiple Sale for Monoplace Hyperbaric Chambers 3Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 2Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 3Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 4
Goat polyclonal to HSPC150 ( Abpromise for all tested applications). entrezGeneID: 29089...
Anti-Mouse Reticular Fibroblast, Purified (Clone ER-TR7) (rat IgG2a)...
Mouse monoclonal [SPM302] to BCAR1, prediluted ( Abpromise for all tested applications). entrezGeneID: 9564 SwissProtID: P56945...
p21 Ras Immunogen: Recombinant C-H-ras p21(val-12). Storage: 4 C...
Biology Products: