Navigation Links
Manatees can probably hear which directions boats approach from
Date:6/11/2009

The world is a perilous place for the endangered manatee. While the mammals are at risk from natural threats, human activity also poses a great danger to manatee numbers. Debborah Colbert, from the Association of Zoos and Aquariums, explains that many manatees die and are seriously injured in collisions with boats every year. However, little is known about how manatees perceive their environment. Whether they can localize sounds, and specifically whether they can tell which direction a boat is approaching from, are crucial factors in the development of manatee protection programmes. Colbert and her colleagues from the Universities of Florida and South Florida and the New College of Florida decided to test whether the mammals can pinpoint sound sources. They publish their results on 12 June 2009 in the Journal of Experimental Biology at http://jeb.biologists.org.

Working at the Mote Marine Laboratory and Aquarium in Florida, Colbert was able to work with two male manatees, Hugh and Buffett, when she initiated a research programme to find out more about these enigmatic creatures. Both young males had been trained previously to participate in a series of sensory studies, so Colbert, Joseph Gaspard 3rd, Gordon Bauer and Roger Reep trained the animals to swim to a specific stationing platform in their enclosure where they could listen to sounds played from one of four speakers arranged around their heads.

Knowing that the manatees' hearing was most sensitive to sounds ranging from 10 to 20kHz, while the animals' calls range from 2.5 to 6kHz, Colbert and David Mann designed three sounds ranging from 0.2 to 20kHz, 6 to 20kHz and 0.2 to 2kHz to play to the animals. The team also selected two single frequency (tonal) sounds at 4kHz and 16kHz to test how the manatees responded to less complex sounds. Having trained the manatees to swim to the speaker that they thought the sound came from, the team then pla
'/>"/>

Contact: Kathryn Knight
kathryn@biologists.com
44-122-342-5525
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related biology news :

1. How an enzyme tells stem cells which way to divide
2. CSHL-led team identifies key decision-point at which cells with broken DNA repair themselves or die
3. CSHL researchers explain process by which cells hide potentially dangerous DNA segments
4. CSHL scientists discover new way in which ubiquitin modifies transcriptional machinery
5. CSHL scientists discover a new way in which epigenetic information is inherited
6. Current mass extinction spurs major study of which plants to save
7. Graduate Education in Physics: Which Way Forward?
8. 1 person out of every 1,000 has synaesthesia, in which an individual can smell a sound
9. Which came first, the chicken genome or the egg genome?
10. Which came first, the moth or the cactus?
11. Equity concerns raised by congestion pricing can be addressed to make approach viable
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/26/2015)... , March 26, 2015 The ... social, recreation and athletic club, today announced it has ... allow freedom of movement for members and staff, while ... a comprehensive process, we selected FST,s IMID Access system ... convenience for our members and staff, in addition to ...
(Date:3/23/2015)... 23, 2015 SoundView Technology Group issues a new ... NXTD ) Wocket smart wallet. SoundView was one of the selected ... experience with the Wocket in multiple scenarios and outlets. ... and other retailers, making both debit and credit card payments.  ... says, "If the company meets their plans in 2015, it ...
(Date:3/20/2015)... DUBLIN , Mar. 19, 2015 Research and Markets ... the "Hand Geometry - Global Strategic Business Report" ... worldwide markets for Hand Geometry in US$ Thousands. The report ... , Japan , Europe ... America , and Rest of World. Annual ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4
... the cell, gateways through which critical signals and chemicals are ... gateways -- proteins that span the cell membrane and connect ... remain, for the most part, black boxes with little ... of intense interest to scientists as they are the targets ...
... Oct. 30, 2010 Researchers at the Institute for Regenerative ... an early, but important, milestone in the quest to grow ... use human liver cells to successfully engineer miniature livers that ... human livers. The next step is to see if the ...
... flies by masquerading as mushrooms. Goblin spiders lurk unseen in ... as haunting as the macabre costumes worn on city streets, ... in the Division of Invertebrate Zoology at the American Museum ... DRACULA ORCHIDS ,According to Grimaldi and colleagues, fruit ...
Cached Biology News:Chemists concoct new agents to easily study critical cell proteins 2Researchers engineer miniature human livers in the lab 2Dracula orchids and goblin spiders 2Dracula orchids and goblin spiders 3
(Date:4/24/2015)... , April 24, 2015 /PRNewswire/ - BioAmber Inc. ... Bayer MaterialScience as the supplier of bio-succinic acid ... bio-based polyurethanes for textile applications that Bayer MaterialScience ... has launched IMPRANIL ® eco, a series ... that reaches as high as 65%.  IMPRANIL ® ...
(Date:4/24/2015)... April 24, 2015 Seoul Semiconductor ... for various applications in the lighting market. ... installations of this technology in emerging markets such ... a wide range of applications such as streetlight ... decorative lighting. , First launched in 2005 the ...
(Date:4/23/2015)... -- BioTE Medical President and Founder Gary Donovitz ... - Avoiding Over-Medication through Natural Hormone Balance" (ISBN: 9780990706458) ... at JW Marriott / Ritz Carlton Grande Lakes April ... Happier, is a welcomed response to many men and ... higher quality of life thanks to bio-identical hormone replacement ...
(Date:4/23/2015)... , April 23, 2015  Cryoport, Inc. (OTCBB: ... logistics solutions for the life sciences industry, today ... cryogenic logistics solutions within the animal husbandry market ... Farms to support the shipment of equine semen ... horse Stallions. Animal husbandry is ...
Breaking Biology Technology:Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 2Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 3Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 4Acrich Technology from Seoul Semiconductor Adopted in Installations Worldwide 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 3Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 2Cryoport to Support the Equine Animal Husbandry Market Through Agreement with Yancey Farms 3
... 13 , - Announce Winners of ... Elsevier, the world,s leading research publisher of ... Institutions announced,today winners of the first annual ... to recognize outstanding young scientists and researchers,in ...
... driving now includes personalized ... progress tracking, ... shipping InSight Version 1.1 for Windows.,This new release includes enhancements that ... are making as they progress,through the software, providing a highly personalized ...
... SAN DIEGO, Nov. 13 Ambrx Inc. ... ARX201, the company,s,long-acting human growth hormone (hGH) analogue ... factor I (IGF-I) levels,while delivering an acceptable safety ... The results of this trial support further,evaluation of ...
Cached Biology Technology:Elsevier and the Association of Southeast Asian Institutions 2Elsevier and the Association of Southeast Asian Institutions 3Elsevier and the Association of Southeast Asian Institutions 4Posit Science(R) Corporation Announces the Release of InSight(TM) 1.1 2Clinical Data Show Long-Acting Human Growth Hormone ARX201 is Safe and Well Tolerated 2Clinical Data Show Long-Acting Human Growth Hormone ARX201 is Safe and Well Tolerated 3
...
Hamster Serum; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels; U.S. sourced, ideal for those who seek an uncompromising quality. Low Hemoglobin levels....
... offered in several versions. The Captiva 0.2 ... are ideal to prepare precipitated protein samples ... and necessary to prevent clogging of expensive ... fiber and 20 um polypropylene filter plates ...
... Cy5 Post-Labeling Reactive Dye Pack, ... CyDye fluors specifically optimized for microarray ... 40000 pmol reactive dye per vial, ... to use, individually dispensed, and packed ...
Biology Products: