Navigation Links
Bats and whales behave in surprisingly similar ways
Date:10/29/2013

to two things: First, all mammalian ears are developed in quite similar ways, and second, - which is the most surprising the contradicting physical conditions in air and water along with the differences in size of the animals even out the differences, that you would expect in the sound frequency", says Professor Annemarie Surlykke from University of Southern Denmark.

As a bat is much smaller than a whale and its prey is accordingly smaller, it needs to produce sounds with a very high frequency in order to achieve the same capacity to determine direction and size of its prey. However, the effect of the higher frequency will be partially cancelled out by the fact that the sound is transported five times as slowly and that the sound waves therefore are five times as short in air as in water.

The researchers conclude that bats and toothed whales produce signals for echolocation in the same frequency range, from 10 to 200 kHz.

The advantage of operating in water rather than air is that the whale's "acoustic field of vision" is up to six times larger than the bat's. The "acoustic field of vision" is the area where the animal can "see" their surroundings using echolocation. A sperm whale can echolocate prey up to 500 meters away, while a bat's echolocation distance is only 2-10 meters.

Bats fly fast and cover approx. one echolocation distance per second. Therefore they often spend less than a second on detecting and catching their prey. Whales move more slowly and have a much greater echolocation distance. Thus they have more time to pick up information from the echoes and they have time to select their prey more carefully. This may explain why bats do not seem to be particularly picky with their prey, while toothed whales are much more selective about their food. The bat simply does not have the time to choose - it goes for fast food!

In the last part of the hunting phase, when they approach their prey both toothed whales and
'/>"/>

Contact: Birgitte Svennevig
birs@sdu.dk
University of Southern Denmark
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Genetic survey of endangered Antarctic blue whales shows surprising diversity
2. Giant squids giant eyes: The better to see hungry whales with
3. New iPad, iPhone app helps mariners avoid endangered right whales
4. Study amplifies understanding of hearing in baleen whales
5. A whale of a discovery: New sensory organ found in rorqual whales
6. Scientists discover a new sensory organ in the chin of baleen whales
7. First paternity study of southern right whales finds local fathers most successful
8. New DNA-method tracks fish and whales in seawater
9. Long menopause allows killer whales to care for adult sons
10. Eating right key to survival of whales and dolphins: UBC research
11. Multi-tasking whales sing while feeding, not just breeding
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bats and whales behave in surprisingly similar ways
(Date:9/30/2014)... on Earth, but when the climate changes and temperatures ... The amount of time needed to adjust to new ... in the future, reveals a new study from researchers ... journal Proceedings of the Royal Society B . ... of greenhouse gases in the atmosphere. The greenhouse effect ...
(Date:9/30/2014)... in Munich report that a new class of ... chemotherapeutic drugs. They have also pinpointed the relevant ... anti-tumor agents. , Researchers led by LMU,s ... the Technische Universitt Mnchen have identified a class ... in the fight against malignant tumors. The compound ...
(Date:9/30/2014)... Sept. 30, 2014  Spectra Automation, a ... the biotech and power generation industries, announced ... Bioprocess Manager, an easy-to-use and cost-effective data ... bioprocess development laboratories. Most ... and analyzer systems. Accessing and consolidating data ...
Breaking Biology News(10 mins):Shape up quickly -- applies to fish, too! 2Cancer therapy: Driving cancer cells to suicide 2Spectra Automation Introduces RECONN Bioprocess Manager 2
... criminals, requires evidence and witnesses; but on the scale ... easier said than done. A team of ... Arizona State University may soon change that. Under a ... a new way to close the gaps in the ...
... Sarasota FL., December 17, 2007 Researchers at ... of the EASE (Exhale Airway Stents for Emphysema) Trial, ... treatment that may offer a significant new, minimally-invasive option ... focuses on a procedure called airway bypass that involves ...
... latest American Chemical Society (ACS) News Service Weekly PressPac with ... News.,Please credit the individual journal or the American Chemical Society ... FOR IMMEDIATE USE EXCEPT ARTICLE #5, which is embargoed for ... ARTICLE #1 FOR IMMEDIATE RELEASE A faster, ...
Cached Biology News:ASU researchers use NASA satellites to improve pollution modeling 2Researchers at Sarasota Memorial Health Care System to study airway bypass treatment for emphysema 2American Chemical Society's Weekly PressPac -- Dec. 12, 2007 2American Chemical Society's Weekly PressPac -- Dec. 12, 2007 3American Chemical Society's Weekly PressPac -- Dec. 12, 2007 4American Chemical Society's Weekly PressPac -- Dec. 12, 2007 5American Chemical Society's Weekly PressPac -- Dec. 12, 2007 6American Chemical Society's Weekly PressPac -- Dec. 12, 2007 7American Chemical Society's Weekly PressPac -- Dec. 12, 2007 8American Chemical Society's Weekly PressPac -- Dec. 12, 2007 9American Chemical Society's Weekly PressPac -- Dec. 12, 2007 10
(Date:10/2/2014)... October 02, 2014 Freeslate, ... research solutions for biopharmaceutical development, today announced highlights ... 24, 2014 at GlaxoSmithKline (GSK) in Ware, UK. ... of best practices in high throughput research and ... leaders gathered together to discuss the challenges and ...
(Date:10/2/2014)... The National Institutes of Health ... grant today to develop an electrode array system ... the brain works through unprecedented resolution and scale. ... efforts to support President Obama's BRAIN (Brain Research ... effort to revolutionize our understanding of the human ...
(Date:10/2/2014)... , Oct. 2, 2014  NKT Therapeutics ... Administration has granted Fast Track designation to NKTT120, ... treatment of sickle cell disease.  NKTT120 is a ... a regulatory T cell that has been demonstrated ... in preclinical models of sickle cell disease.  Fast ...
(Date:10/1/2014)... 01, 2014 METTLER TOLEDO’s newly improved ... precision balances as well as a dual range ... performance, the new SmartPan™ weighing pan delivers results up ... On all balances, ergonomic design details mean users no ... working for long periods in front of the balance. ...
Breaking Biology Technology:Freeslate European Summit Highlights Best Practices in High Throughput Research and Data Management 2NIH taps Lawrence Livermore to Develop Sophisticated Electrode Array System to Monitor Brain Activity 2NIH taps Lawrence Livermore to Develop Sophisticated Electrode Array System to Monitor Brain Activity 3NIH taps Lawrence Livermore to Develop Sophisticated Electrode Array System to Monitor Brain Activity 4FDA Grants Fast Track Designation to NKT Therapeutics' NKTT120 for the Treatment of Sickle Cell Disease 2METTLER TOLEDO’s XS Balance Line Delivers Performance and Ergonomics To Safeguard Health in the Workplace 2METTLER TOLEDO’s XS Balance Line Delivers Performance and Ergonomics To Safeguard Health in the Workplace 3
... Reportlinker.com announces that a new market research ... Orthopedic Biomaterials, The World Market ... products, which can be organic or synthetic in ... fracture to facilitate healing or to compensate for ...
... 3, 2011 EntreMed, Inc. (Nasdaq: ENMD ... treatment of cancer today announced the presentation of clinical ... platinum-resistant ovarian cancer patients.   The data were presented ... A. Matulonis, medical director of gynecologic oncology at Dana-Farber ...
... 3, 2011 Asmacure Ltee, a clinical-stage ... agonists for the treatment of asthma and other inflammatory ... as chief executive officer.  With a solid foundation established ... it progresses its lead compound, a potential new treatment ...
Cached Biology Technology:Reportlinker Adds Orthopedic Biomaterials, The World Market 2Reportlinker Adds Orthopedic Biomaterials, The World Market 3Reportlinker Adds Orthopedic Biomaterials, The World Market 4EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 2EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 3EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 4Asmacure Ltee Appoints Pharmaceutical and Biotechnology Industry Veteran Martin Driscoll as CEO 2Asmacure Ltee Appoints Pharmaceutical and Biotechnology Industry Veteran Martin Driscoll as CEO 3
For demonstration of Helicobacter pylori...
... efficient interfacing with mass spectrometry. Improved ... demands for benefits like these have ... routine applications. Standard HPLC systems, however, ... to operate with smaller bore columns ...
... is used in conjunction with your existing apoptosis ... apoptosis according to your existing procedure (also reserve ... control). Once you have induced apoptosis in your ... population and incubate the cells for an additional ...
Kit Components: Anti-Acetylated Histone H3 Salmon Sperm DNA/Protein A Agarose All necessary buffers. ...
Biology Products: