Navigation Links
Scientists discover a new sensory organ in the chin of baleen whales
Date:5/25/2012

Lunge feeding in rorqual whales (a group that includes blue, humpback and fin whales) is unique among mammals, but details of how it works have remained elusive. Now, scientists from the Smithsonian Institution and University of British Columbia have solved the mystery. They discovered a sensory organ in the chin of rorqual whales that communicates to the brain. The organ orchestrates the dramatic changes and adjustments needed in jaw position and throat-pouch expansion to make lunge feeding successful. The team's research will be the featured cover story in the May 24 issue of Nature.

Rorqual whales are among the largest vertebrates, yet they feed on some of the smallest organisms in the ocean. They race forward, engulfing more than their own body weight in water and then filter out the millions of krill and small fish inside their mouths―all within seconds. This feeding technique is made possible by several morphological specializations, including hyper-expandable throat pleats, a Y-shaped cartilage structure connecting the chin to the throat pleats and a lower jaw made of two separate bones that move independently. The discovery of this sensory organ is shedding new light on how these features coordinate to create successful feeding.

The organ, composed of connective tissue with papillae (protrusions) that contain nerves, is suspended in a gel-like material and is located in the whale's chin in the space between the tips of the two lower jaw bones. Vascular and nervous tissue from an ancestral front tooth socket still remains in today's whales and connect to the sensory organ. Evidence indicates that the sensory organ responds to jaw rotation when the whale opens and closes its mouth and when the whale's throat pleats expand as it takes in water.

"The odd arrangement of tissues didn't make much sense to us at first, but then we realized that this organ was perfectly placed, anatomically, to coordinate a lunge bec
'/>"/>

Contact: John Gibbons
gibbonsjp@si.edi
202-633-5187
Smithsonian
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Scientists start explaining Fat Bastards vicious cycle
2. Scientists find gold-plated fossil solution
3. New study by WHOI scientists provides baseline measurements of carbon in Arctic Ocean
4. Novel discovery by NUS scientists paves the way for more effective treatment of cancers
5. Stanford scientists document fragile land-sea ecological chain
6. Using graphene, scientists develop a less toxic way to rust-proof steel
7. Scripps Florida scientists awarded $8.4 million grant to develop new anti-smoking treatments
8. Berkeley Lab scientists generate electricity from viruses
9. Scientists read the ash from the Icelandic volcano 2 years after its eruption
10. Scientists find differences in naked mole rats protein disposers
11. Scripps Florida scientists identify neurotranmitters that lead to forgetting
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists discover a new sensory organ in the chin of baleen whales 
(Date:11/3/2014)... , Nov. 3, 2014  NeuroSigma ® ... -based life sciences company focused on commercialization of ... for the treatment of neurological and neuropsychiatric ... Industrial Property has issued a Notice of Allowance ... application is co-owned by NeuroSigma and the Regents ...
(Date:11/2/2014)... issue of Physics World , James Dacey explores ... of death" to take their innovations from the lab ... gruelling challenge facing all start-up companies as they move ... because of two main factors: physics-based inventions are usually ... turn out to be a lot more complicated than ...
(Date:11/2/2014)... put a flashlight up to our palms to see ... St. Louis engineers are using a similar idea to ... of cancerous tissues and to develop potential treatments. ... Professor of Biomedical Engineering at the School of Engineering ... that allows researchers to better focus light in tissue, ...
Breaking Biology News(10 mins):NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 2NeuroSigma Receives Notice of Allowance from the Mexican Institute of Industrial Property Covering Subcutaneous Trigeminal Nerve Stimulation (sTNS) 3The 'valley of death' facing physics start-ups 2Improving imaging of cancerous tissues by reversing time 2
... 2008) Argonne National Laboratory has signed a ... Laboratory (SRNL) to collaborate on nuclear energy and ... U.S. Energy Department (DOE) needs and other important ... remain a leader in nuclear energy research," Argonne ...
... the molecule hydroxyl on another planet for the first ... to unlock the workings of Venuss dense atmosphere. ... of a hydrogen and oxygen atom each. It has ... atmosphere, some 100 km above the surface, by Venus ...
... tea may be able to stave off the cognitive ... to a new study published in the second issue ... of Respiratory and Critical Care Medicine. Researchers examined ... water, on rats who were intermittently deprived of oxygen ...
Cached Biology News:Argonne-SRNL agreement supports critical DOE, national priorities 2Key molecule discovered in Venus's atmosphere 2Green tea compounds beat OSA-related brain deficits 2
(Date:11/24/2014)... (PRWEB) November 23, 2014 One of the ... of optics and photonics is now available to high school ... low cost. SPIE, the international society for optics and ... the complete SPIE Digital Library available to high ... , “Light-based technologies are integral to all areas of life ...
(Date:11/24/2014)... Nov. 24, 2014  Spherix Incorporated (Nasdaq: ... to the fostering and monetization of intellectual property, ... Telecommunications Ltd.,  Case No. 3:13-cv-03494-M and  Spherix v. ... both in the United States District Court for ... . On November 21, 2014 ...
(Date:11/22/2014)... (PRWEB) November 21, 2014 During his ... understood the need to surround himself with great people ... and entrepreneur, his friends often marveled at his extraordinarily ... lived his life and -- even with his death ... the Alzheimer’s disease that would ultimately take his life. ...
(Date:11/22/2014)... On November 17th Chicago start-up Briteseed outperformed ... Technologies Summit in San Francisco to take first place ... Silicon Valley investors and technology elites as the premier ... positions Briteseed to move on to the final ... compete with other elite innovation finalists for a $125,000 ...
Breaking Biology Technology:SPIE Digital Library Now Available to High Schools, Two-Year Colleges at No or Low Cost 2Markman Hearing Held as Scheduled in VTech and Uniden Cases 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 2Sherry Sharp, Wife of CarMax Founder, Richard Sharp, Accepts Seat on Board of Cure Alzheimer’s Fund 3Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 2Insight Product Development Accelerator Member Wins MedTech Innovator Award Competition 3
... Research & Development Team, CLINTON, N.J., ... fully,integrated critical care biotherapeutics company, announced that ... President of Translational,Medicine, reporting to Ralf Rosskamp, ... of Ikaria., As Vice President of ...
... Thursday, June 26th at 2:30pm ET, NEW YORK, ... today announced that Michael S. Weiss, the Company,s,Chairman and ... & Co. Healthcare Conference being held in New York ... on Thursday, June 26th at,2:30pm ET and will be ...
... New Generation Biofuels,Holdings, Inc. (AMEX: GNB ), a ... Exchange (AMEX) in mid-April, will join the Russell,Microcap Index ... Friday, June 27th, after the market closes, according to ... ., Membership in the Russell Microcap Index, which ...
Cached Biology Technology:Ikaria Introduces Dr. Michael Cooreman as Vice President of Translational Medicine 2Ikaria Introduces Dr. Michael Cooreman as Vice President of Translational Medicine 3Keryx Biopharmaceuticals to Present at the Jefferies & Co. Healthcare Conference 2New Generation Biofuels Set to Join Russell Microcap Index 2New Generation Biofuels Set to Join Russell Microcap Index 3
...
The BD CBA Human Apoptosis Kit can be used to quantitatively measure,cleaved PARP, Bcl-2, and active Caspase-3 protein levels in a single sample. The,Kit performance has been optimized for analysis o...
BD Primaria 35 mm Cell Culture Dish with Easy-Grip design, surface-modified polystyrene for enhanced cell culture. (20/sp, 200/ca) Packaging: 20 / sleeve, 500 / case ...
... Activation of ICE-family proteases/caspases initiates apoptosis in ... Apoptosis Detection Kit provides a simple and ... by flow cytometry in intact cells. ... two aspartate residues linked to rhodamine 110 ...
Biology Products: