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

ause that soft structure is pinched by the tips of the jaws, and deforms through the course of a lunge," said Nicholas Pyenson, paleobiologist at the Smithsonian's National Museum of Natural History and lead author of the research. "This deformation is registered by the nerves inside the organ, informing the gulping whale about its gigantic jaws, which must close before prey escape. This finding answers several outstanding theoretical questions and puzzling field data that suggest rorquals actively control their lunge, rather than letting their mouths passively inflate like a parachute."

Fossil records show that the bottom jaw of baleen whales has been unfused, or separated, at its tip since the late Oligocene epoch (23-28 million years ago). Despite the long expanse of time to the present, this organ represents an evolutionary novelty for rorqual whales, based on its absence in all other modern species of baleen whale, such as gray and right whales. This organ has a fundamental role in one of the most extreme feeding methods in aquatic vertebrates, which facilitated the evolution of the largest vertebrates ever.

Because lunge feeding is a critical part of maintaining their large body size―blue whales can grow to more than 100 feet in length and weigh more than 150 tons―this discovery helps illuminate the set of anatomical and behavioral innovations that happened in evolutionary history of rorquals that allowed them to become oceanic giants. "It is a supreme irony," Pyenson said, "that even after several decades of whaling where scientists had the opportunity to observe hundreds of thousands of whale carcasses, we are still only beginning to understand the anatomy of the largest ocean predators of all time."


'/>"/>

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:10/1/2014)... researchers hope to take a healthy salad up a ... of breast cancer in leafy greens. , "In the ... either by eating the salad or making a pill ... of biomedical engineering at Case Western Reserve School of ... G. Komen breast cancer organization is funding the research ...
(Date:9/30/2014)... Evidence of the environmental effects of moorland burning is ... the subject, with the aim of relieving tensions on ... , The EMBER (Effects of Moorland Burning on the ... burning on moorland, which is practised predominantly to support ... impacts on peat hydrology, peat chemistry and physical properties, ...
(Date:9/30/2014)... WASHINGTON, D.C., September 30, 2014--Sea monkeys have captured the ... of their easily observable life cycle -- sold as ... and mate given little more than a tank of ... a shorter-term pattern: Like other zooplankton, brine shrimp vertically ... conditions, coming closer to the surface at night and ...
Breaking Biology News(10 mins):Scientists wield plant viruses against deadly human disease 2Scientists wield plant viruses against deadly human disease 3Grouse moor burning causes widespread environmental changes 2Laser-guided sea monkeys show how zooplankton migrations may affect global ocean currents 2
... available in German . ... animal behaviour that is subject to annual rhythms is controlled by ... time, in many cases it is still unclear how far genes ... also applied to the common buzzard and its migration from parental ...
... , This news release is available in ... are bad at getting a grip on collective risks. Climate change ... so far not led to specific measures. The reason for this ... than to investing in future quality of life. Therefore, ...
... physicians and biologists alike - even though it is well-established ... stages, immobility can all be traced back to the death ... neuron. The underlying cause of this cellular death is a ... external factors, most of the details of which are well-known. ...
Cached Biology News:The molecular clock of the common buzzard 2People don't put a high value on climate protection 2People don't put a high value on climate protection 3PD map: Putting together the pieces of the Parkinson's puzzle 2PD map: Putting together the pieces of the Parkinson's puzzle 3
(Date:10/1/2014)... September 30, 2014 Award winning ... announces four new-hosted collaboration bundles that combine ... high quality conferencing experiences for low, flat rate ... choose from, businesses have optimized solutions to meet ... include audio only minutes (1K, 5K, 10K ...
(Date:10/1/2014)... Industry leaders from retail pharmacies to ... theme, ,Commercial Opportunities in the Era of Reform, from ... Elsevier , a world-leading provider of scientific, technical and ... of some of the industry,s most prominent healthcare leaders ... in the future. The Elsevier Healthcare and ...
(Date:9/30/2014)... , Sept. 30, 2014 Pacific ... 2014 Summary Global Markets Direct,s, ,Pacific ... 2014, provides an overview of the Pacific Northwest ... This report provides comprehensive information on the current ... complete with comparative analysis at various stages, therapeutics ...
(Date:9/30/2014)... 30, 2014 Proove Biosciences , ... excited to announce a new genetic test built upon ... Pain Perception Test will provide physicians with an ... pain tolerance levels are stratified between individuals. With this ... a person has a genetic predisposition that will affect ...
Breaking Biology Technology:SoundConnect Launches New Audio, Web and Video Bundles 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 3Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 2Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 3Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3
... 5 , - Data Presented ... York , ThromboGenics NV (Euronext Brussels: ... innovative medicines for eye,disease, vascular disease and cancer, today announces ... the treatment of,Diabetic Macular Edema (MIVI II DME). The data ...
... , LA JOLLA, Calif., Oct. 5 Transdel Pharmaceuticals, Inc. ... a conference call and audio webcast on Tuesday, October 6, ... of its Phase 3 clinical study for Ketotransdel®, a topical ... A press release will be issued on Tuesday, October 6, ...
... Peregrine Pharmaceuticals, Inc. (Nasdaq: PPHM ) today reported ... bavituximab in combination with carboplatin and paclitaxel in patients ... reported from the initial cohort of 21 patients in ... patients with locally advanced or metastatic NSCLC achieved an ...
Cached Biology Technology:ThromboGenics Announces Results From a Phase IIa Trial Evaluating Microplasmin for the Treatment of Diabetic Macular Edema (MIVI II DME) 2ThromboGenics Announces Results From a Phase IIa Trial Evaluating Microplasmin for the Treatment of Diabetic Macular Edema (MIVI II DME) 3ThromboGenics Announces Results From a Phase IIa Trial Evaluating Microplasmin for the Treatment of Diabetic Macular Edema (MIVI II DME) 4Transdel Pharmaceuticals to Host Conference Call and Webcast on Tuesday, October 6, 2009 to Announce Top-Line Phase 3 Study Results for Lead Topical Pain Drug Ketotransdel(R) 2Transdel Pharmaceuticals to Host Conference Call and Webcast on Tuesday, October 6, 2009 to Announce Top-Line Phase 3 Study Results for Lead Topical Pain Drug Ketotransdel(R) 3Peregrine Pharmaceuticals Reports Positive Results From Phase II Bavituximab Lung Cancer Trial 2Peregrine Pharmaceuticals Reports Positive Results From Phase II Bavituximab Lung Cancer Trial 3Peregrine Pharmaceuticals Reports Positive Results From Phase II Bavituximab Lung Cancer Trial 4
RAT ANTI MOUSE METALLOPHILIC MACROPHAGES...
Request Info...
Agarase cleaves agarose to neoagaro-oligosaccharides, and is used for,quantitative, gentle recovery of DNA from low melting point agarose....
Request Info...
Biology Products: