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:9/30/2014)... DURHAM, N.C. -- Pollution in urban and farm runoff ... a new study finds. , The study, published ... shows that nitrogen in the runoff ends up in ... tumors on the animals, eyes, flippers and internal organs. ... and the National Oceanic and Atmospheric Administration (NOAA) conducted ...
(Date:9/30/2014)... wrong with your muscles because of age, disease or injury, ... That,s where a new research report published in the October ... comes in. In the report, a team of scientists produce ... scientists "see" which genes are active in an organ at ... and that men have approximately 400 more active genes in ...
(Date:9/30/2014)... , Sept. 30, 2014  Spectra ... solutions for the biotech and power generation ... new RECONN Bioprocess Manager, an easy-to-use and ... geared towards bioprocess development laboratories. ... disparate bioreactor and analyzer systems. Accessing and ...
Breaking Biology News(10 mins):Pollution linked to lethal sea turtle tumors 2Pollution linked to lethal sea turtle tumors 3Scientists identify which genes are active in muscles of men and women 2Spectra Automation Introduces RECONN Bioprocess Manager 2
... National Institute of Standards and Technology (NIST) have ... clumps of proteins in protein-based pharmaceuticals. This first ... can be assured that their instruments are faithfully ... concern because of its impact on quality control ...
... laundry products and air fresheners found the products emitted ... off at least one chemical regulated as toxic or ... was listed on the product labels. , "I first ... me that the air fresheners in public restrooms and ...
... the first issue of , Energy & Environmental Science ... Free for all to read online, this inaugural ... hydrogen storage, thermochemical biofuel production, sustainable energy, and much ... of the highest quality, knowing that they can rely ...
Cached Biology News:NIST trumps the clumps: Making biologic drugs safer 2Toxic chemicals found in common scented laundry products, air fresheners 2Toxic chemicals found in common scented laundry products, air fresheners 3
(Date:10/1/2014)... 1, 2014  Spherix Incorporated (Nasdaq: SPEX) -- an intellectual ... monetization of intellectual property, announced today that the ... Uniden in the U.S. District Court for the ... has been rescheduled for November 10, 2014.  This ... The Court Order setting the Markman date was ...
(Date:10/1/2014)... Irvine, CA (PRWEB) September 30, 2014 ... for user-friendly, cost-effective tools to address sales, training ... PMG has developed innovative mobile applications to ... studies, outlining the agency’s latest customized mobile app ... http://www.studiopmg.com/work . , In partnership with Toyota, ...
(Date:10/1/2014)... Ill. (PRWEB) October 01, 2014 The ... $9,956,011 to Southern Illinois University Edwardsville as part of ... (TAACCCT) initiative. The funding is co-administered by the Department ... Joe Biden, Secretary of Labor Thomas E. Perez and ... $450 million in job-driven training grants to nearly 270 ...
(Date:9/30/2014)... This news release is available in German . ... at the Technische Universitt Mnchen (TUM) have demonstrated a ... Their experiments show that future computer chips could be ... transistors. As the main enabling technology of the semiconductor ... fundamental limits, the TUM researchers and collaborators at the ...
Breaking Biology Technology:Markman Hearing Date for VTech and Uniden Litigation Now Set for November 10, 2014 2Digital Agency Studio PMG Launches New Case Studies on Website 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 3U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 4A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3
... ... ... , , , ... ...
... ... web to cost effectively boost the pool of eligible patients for screening for any ... upload recruitment material approved by their Institutional Review Board (IRB), on their own specific ... ...
... ... ... ... ...
Cached Biology Technology:Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 2Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 3Spectral granted IDE approval by U.S. FDA to conduct pivotal trial for Toraymyxin(TM) 4RESolutions Rapid Enrollment Solutions, LLC Announces Launch of Novel Patient Recruitment Web Site - Clinical Trial Spotlight™ 2RESolutions Rapid Enrollment Solutions, LLC Announces Launch of Novel Patient Recruitment Web Site - Clinical Trial Spotlight™ 3China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 2China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 3China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 4China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 5China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 6China-Biotics, Inc. Inaugurated the Commercial Production of its New Production Facility 7