Navigation Links
Study amplifies understanding of hearing in baleen whales
Date:4/17/2012

For decades, scientists have known that dolphins and other toothed whales have specialized fats associated with their jaws, which efficiently convey sound waves from the ocean to their ears. But until now, the hearing systems of their toothless grazing cousins, baleen whales, remained a mystery.

Unlike toothed whales, baleen whales do not have enlarged canals in their jaws where specialized fats sit. While toothed whales use echolocation to find prey, baleen whales generally graze on zooplankton, and so some scientists have speculated that baleen whales may not need such a sophisticated auditory system. But a new study by scientists at Woods Hole Oceanographic Institution (WHOI), published April 10, 2012, in The Anatomical Record, has shown that some baleen whales also have fats leading to their ears.

The scientists propose that toothed whales may not be the only whales that use fats to transmit sound in water, as previously believed, and the fats in both types of whales may share a common evolutionary origin.

Little progress had been made on the auditory anatomy of baleen whales because specimens to study are hard to get. Unlike many toothed whales, they are large, not kept in captivity, rarely strand on beaches, and decompose rapidly when they do.

For the new study, lead author Maya Yamato, a graduate student in the MIT/WHOI Joint Program in Oceanography, received seven heads of minke whales that stranded and died, mostly on beaches on Cape Cod. She collaborated with the International Fund for Animal Welfare's (IFAW) Marine Mammal Rescue and Research unit in Yarmouth Port, Mass.

The whale heads were scanned using computerized tomography (CT) and magnetic resonance imaging (MRI) at the Computerized Scanning and Imaging (CSI) lab at WHOI and MRI facility at Massachusetts Ear and Eye Infirmary in Boston. Using these biomedical techniques, the researchers generated 3-D visualizations of the whales' internal an
'/>"/>

Contact: WHOI Media Relations
media@whoi.edu
508-289-3340
Woods Hole Oceanographic Institution
Source:Eurekalert

Page: 1 2

Related biology news :

1. Large international study finds memory in adults impacted by versions of 4 genes
2. UF receives $1 million from Keck Foundation to study mechanisms of inherited disease
3. Whats in a surname? New study explores what the evolution of names reveals about China
4. U of I study: Lose body weight before gaining baby weight
5. Study resolves debate on human cell shut-down process
6. Study shows botanical formula fights prostate cancer
7. Approach to diabetes self-management too narrow, study suggests
8. Study finds peoples niceness may reside in their genes
9. Loyola study debunks common myth that urine is sterile
10. UCSB study shows forest insects and diseases arrive in US via imported plants
11. Head and body lice appear to be the same species, genetic study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2014)... who have had a stroke, often suffer motor deficits ... study conducted in Taiwan, that will be published in ... is currently freely available on-line as an unedited early ... one group of stroke victims had their own peripheral ... and a similar group did not, those who received ...
(Date:4/23/2014)... the energy landscape in the U.S., but in ... the energy industry, residents and agricultural interests over ... degraded water quality is a potential risk unless ... in the ACS journal Environmental Science & ... point out that a major criticism of extracting ...
(Date:4/23/2014)... Climate fiction, or simply cli-fi, is a newly coined term ... global warming. New research from University of Copenhagen shows how ... to simulate the potential consequences of climate change and imagine ... than scientific data on changes in the atmosphere; it is ... by the books we read and the films we see. ...
Breaking Biology News(10 mins):Autologous stem cell therapy improves motor function in chronic stroke victims 2How to avoid water wars between 'fracking' industry and residents 2Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3
... as calcified, inert structures, but researchers at Columbia University ... important novel function of the skeleton. Theyve shown for ... organ that helps control our sugar metabolism and weight ... development of type 2 diabetes. The research, ...
... passed on from mother to child is decided very early ... ovary. In a cell division process that is unique to ... egg before it is fertilised. Using a powerful microscope, researchers ... how the molecular machinery functions that is responsible for chromosome ...
... Haven, Conn. It is not just whats in your genes, ... between species at least in yeast according to a ... Weve known for a while that the protein coding genes of ... author Michael Snyder , the Cullman Professor of Molecular ...
Cached Biology News:Research shows skeleton to be endocrine organ 2A unique arrangement for egg cell division 2Evolution is driven by gene regulation 2
(Date:1/14/2014)... , Jan. 14, 2014 The largest international ... medicinal plants and therapeutic derivatives thereof has endorsed ... and researchers about the challenges of adulterated herb ... ) The Society for Medicinal ...
(Date:1/14/2014)... 2014 iLab Solutions, the leader in core ... Director of Product Strategy. In this role, Michelle will work ... to guide in the development of iLab products. Her main ... possible benefit to the scientific community by offering the most ...
(Date:1/14/2014)... WESTBOROUGH, Mass. , Jan. 14, 2014  RXi ... on discovering, developing and commercializing innovative therapies addressing ... announced that it received the Notice of Allowance ... on its unique self-delivering RNAi compounds (sd-rxRNA®), for ...
(Date:1/14/2014)... Kinaxis ®, provider of RapidResponse ®, a cloud-based supply ... ( S&OP ) service, is proud to be a gold ... held at the Hilton San Diego Bayfront, January 30 – ... Kaszas , Director of Supply Chain at Amgen, as she ...
Breaking Biology Technology:World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... DIEGO, Jan. 3, 2012  Amylin Pharmaceuticals, Inc. (Nasdaq: ... Morgan Healthcare Conference in San Francisco on Monday, January 9, ... Daniel M. Bradbury, president and chief executive officer of ... presentation and break-out session will be webcast through the "Investors" ...
... Renowned biochemist Michael A. Marletta, PhD, assumed the post ... January 1, succeeding Richard A. Lerner, MD, who led ... (Photo:  http://photos.prnewswire.com/prnh/20120102/DC28698 ) "I,m excited ... knowledge in the biosciences and applying that knowledge to ...
... BioNeutral Group, Inc. (OTCBB: BONU), a specialty life ... received $400,000 in connection with the Preferred Stock ... ("Vinfluence"), New South Wales, Australia.  Pursuant to the ... initial closing and a second funding of $200,000, ...
Cached Biology Technology:Michael A. Marletta Takes Office as New President of Scripps Research Institute 2BioNeutral Group Receives $400,000 in Equity Financing 2BioNeutral Group Receives $400,000 in Equity Financing 3
This monoclonal antibody specifically recognizes Y. pestiscapsular F1 antigen. It does not cross-react with Y. pseudotuberculosisor Y. enterocolitica....
... was first identified as the cellular homolog of ... and Jun D have been shown to be ... which are involved in dimerization and DNA binding, ... transcriptional activation, diverge. Antigen: ...
IHC Zinc Fixative - , 1000 ml Consult technical datasheet for details....
... (IC) Fixation Buffer, used in conjunction ... 00-8333), can be used to fix ... intracellular staining of cytokines and other ... have been specially formulated for reducing ...
Biology Products: