Navigation Links
Northwestern researchers examine mechanical bases for the emergence of undulatory swimmers
Date:6/24/2013

How do fish swim? It is a simple question, but there is no simple answer.

Researchers at Northwestern University have revealed some of the mechanical properties that allow fish to perform their complex movements. Their findings, published on June 13 in the journal PLOS Computational Biology, could provide insights in evolutionary biology and lead to an understanding of the neural control of movement and development of bio-inspired underwater vehicles.

"If we could play God and create an undulatory swimmer, how stiff should its body be? At what wave frequency should its body undulate so it moves at its top speed? How does its brain control those movements?" said Neelesh Patankar, professor of mechanical engineering at Northwestern's McCormick School of Engineering and Applied Science. "Millennia ago, undulatory swimmers like eels that had the right mechanical properties are the ones that would have survived."

The researchers used computational methods to test assumptions about the preferred evolutionary characteristics. For example, species with low muscle activation frequency and high body stiffness are the most successful; the researchers found the optimal values for each property.

"The stiffness that we predict for good swimming characteristics is, in fact, the same as the experimentally determined stiffness of undulatory swimmers with a backbone," said Amneet Bhalla, graduate student in mechanical engineering at McCormick and one of the paper's authors.

"Thus, our results suggest that precursors of a backbone would have given rise to animals with the appropriate body stiffness," added Patankar. "We hypothesize that this would have been mechanically beneficial to the evolutionary emergence of swimming vertebrates."

In addition, species must be resilient to small changes in physical characteristics from one generation to the next. The researchers confirmed that the ability to swim, while dependent
'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Grants add to Northwestern-Qatar partnership
2. UCSB scientists compile first study of potential for tsunamis in northwestern California
3. Northwestern scientists create chemical brain
4. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
5. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
6. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
7. UNH researchers find African farmers need better climate change data to improve farming practices
8. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
9. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
10. Researchers print live cells with a standard inkjet printer
11. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)...  Privacy Advocate and Senior Staff Attorney at the ... the lineup of biometric and mobile commerce experts set ... Summit in Tampa, Florida on ... include Steven Rahman, Director, Technology and Strategy at Samsung, and ... theme of this year,s event is Mobility at the ...
(Date:8/28/2014)... WASHINGTON, Aug. 28, 2014A new method for measuring and ... help doctors and researchers better understand how drug abuse ... surgery and tissue engineering, and lead to better treatment ... by a team of researchers from Stony Brook University ... of Health, was published today in The Optical Society,s ...
(Date:8/28/2014)... mould in homes could pose a significant health risk to ... the Journal of Allergy and Clinical Immunology . , ... different countries, the research has found that the presence of ... asthma sufferers, as well as increasing the likelihood of developing ... team at the University of Exeter Medical School and is ...
Breaking Biology News(10 mins):Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2This is your brain's blood vessels on drugs 2This is your brain's blood vessels on drugs 3Indoor mold poses health risk to asthma sufferers 2
... still images and video, as well as local information ... of Life via new tools that let the public ... collaboration of unprecedented scale. Experts and citizen scientists ... which dedicates a Web page to each known species ...
... , , ... LLC, the image analysis and pattern recognition technology provider, today ... for online signature verification at the tenth International Conference on ... 26 - 29, 2009. Parascript was among 12 participants ...
... An indigenous family living in a mountainous area of ... discover information about genetic mutations associated with acromegaly, a form ... facial features. The information could lead to ... a benign pituitary gland tumor that can be deadly if ...
Cached Biology News:Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 2Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 3Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 4Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 5Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 6Cool new tools let public contribute to massive interactive online biodiversity encyclopedia 7Parascript Technology Wins Online Signature Verification Competition 2Clues to gigantism provided by family in Borneo Mountains 2
(Date:8/28/2014)... PrimeSource Building Products, Inc., a leading ... to support their communication needs with the ... conferencing platform GlobalMeet powered by SoundConnect. The solution ... SoundConnect delivers award winning “results driven” business class ... be utilizing GlobalMeet powered by SoundConnect ...
(Date:8/28/2014)... Whitehouse Laboratories is excited to announce ... PTI Inspection Systems that will enable it ... art leak testing method development and validation programs using ... As part of this agreement, Whitehouse Labs has taken ... Instrument developed and manufactured by PTI. The HVLD ...
(Date:8/27/2014)... Austin, TX (PRWEB) August 27, 2014 ... $6 million in Series B funding and secured Otter ... and investment capital will accelerate commercialization of GGI’s Agriplier™ ... multiple crop types. , “Since our first meeting, ... commitment to the biological product space,” said Alan Sobba, ...
(Date:8/27/2014)... Livermore, California (PRWEB) August 27, 2014 ... (LLNL), through Lawrence Livermore National Security ... million to develop and deliver a state-of-the-art laser ... Beamlines facility (ELI Beamlines), under construction in the ... design performance, the laser system, called the " ...
Breaking Biology Technology:PrimeSource Chooses SoundConnect as Collaboration Provider 2Whitehouse Labs Renews Partnership with PTI Inspection Systems 2Whitehouse Labs Renews Partnership with PTI Inspection Systems 3Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3LLNL Synchs up with ELI Beamlines on Timing System 2LLNL Synchs up with ELI Beamlines on Timing System 3
... Biomedical, Inc., a,leader in human embryonic stem cell ... an exclusive worldwide technology licensing agreement,with the University ... to commercialize human mesenchymal cells developed at the,University ... Under the terms of the agreement, ArunA ...
... ,endometrial regenerative cells, (ERCs) are capable of restoring ... peripheral artery disease. A study published today in ... demonstrates that when circulation-blocked mice were treated with ... , Critical limb ischemia, an advanced form ...
... Builds on Existing Brand Strength and Pediatric ... ... PLYMOUTH MEETING, Pa., Aug. 18 /Xinhua-PRNewswire-FirstCall/ -- BMP,Sunstone Corporation ... (Tangshan) Pharmaceutical Co., Ltd.,("Sunstone"), its wholly-owned subsidiary, has received a ...
Cached Biology Technology:ArunA Biomedical Announces Exclusive Worldwide Technology Licensing Agreement to Commercialize Human Embryonic Stem Cell Derived Mesenchymal Cells 2Limbs saved by menstrual blood stem cells 2BMP Sunstone Receives Production License from the SFDA to Manufacture and Market Pediatric Multivitamin Granules in the PRC 2BMP Sunstone Receives Production License from the SFDA to Manufacture and Market Pediatric Multivitamin Granules in the PRC 3BMP Sunstone Receives Production License from the SFDA to Manufacture and Market Pediatric Multivitamin Granules in the PRC 4
... cultured in RPMI 1640 medium with 2 mM ... growth. In order to keep the antigens ... acetone-methanol. The cells are arrayed on a ... wells surface specifically treated to enhance cellular attachment ...
Mouse polyclonal antibody to REXO4 - XPMC2 prevents mitotic catastrophe 2 homolog (Xenopus laevis)...
... StabilCoat Plus Microsphere/Microarray Stabilizer is an aqueous ... and other non-toxic chemicals in a PBS ... 7.4. This product contains a combination ... a preservative. StabilCoat Plus Stabilizer provides ...
... ABgene's Protein Purification Plates are designed ... SDS-PAGE gels. The 96-well plates feature two ... ends of each well. The wells remain ... with buffer, during which time the protein ...
Biology Products: