HOME >> BIOLOGY >> NEWS
Waddling is a good way to make up for short legs - at least for penguins, say UC Berkeley researchers

Penguins are notoriously inefficient walkers, expending twice as much energy in walking a given distance as any other animal of the same weight.

But don't blame it on their funny, waddling gait.

A new study by researchers at the University of California, Berkeley, shows that waddling actually helps penguins conserve energy. The real problem is their short legs.

"Our findings indicate that walking is expensive for penguins not because of their waddling, but because they have such short legs that require their leg muscles to generate force very quickly when they walk," said Timothy Griffin, an integrative biology graduate student in UC Berkeley's College of Letters & Science. "When we compare penguins to animals with similar leg lengths, they burn about the same amount of calories per unit mass."

Griffin and Rodger Kram, a former assistant professor of integrative biology at UC Berkeley, report their findings in the Dec. 21/28 issue of the journal Nature. Kram is now in the Department of Kinesiology and Applied Physiology at the University of Colorado, Boulder.

The results have implications not only for the ecology and evolution of penguins, but for waddling behavior in other animals, and maybe even pregnant women.

"Our knowledge gained from penguins provides novel insight into the gait mechanics of humans with increased lateral movements, such as in pregnant women or obese individuals," Griffin said. "This information may lead to improved understanding, evaluation and treatment of individuals with gait disabilities."

Griffin and Kram performed their experiments on Emperor penguins at San Diego Sea World's "Penguin Encounter" exhibit, a large refrigerated penguin city housing some half dozen penguin species. With the help of Sea World staff, the UC Berkeley scientists and their student team nudged the naturally curious penguins across a force platform to measure the side-to-side and fore-and-aft forces they exert while walking
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
19-Dec-2000


Page: 1 2 3 4

Related biology news :

1. Hopkins scientists overcome main obstacle to making tons of short, drug-like proteins
2. New approach offers potential drug-discovery shortcut
3. Scientists develop new cloning technique that dramatically shortens the search for genes
4. Two-drug approach might shorten painful labor, reduce Caesarean sections
5. Accelerated global warming from nutrient shortages for trees and soils
6. Estrogen improves short term memory and oral reading in midlife postmenopausal women
7. Worlds protected areas suffer from $2.5 billion annual shortfall
8. Platelet refrigeration method may ease shortages for transfusions, researchers report in Science
9. Telomere shortening may be early marker of cancer activity
10. Pitt researchers find genes for depression; Play role in mood disorders, shorter lifespan
11. Strategies to boost womens multivitamin use fall short

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/7/2016)... TORONTO , June 7, 2016  Syngrafii ... begun a business relationship that includes integrating Syngrafii,s ... pilot branch project. This collaboration will result in ... for the credit union, while maintaining existing document ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
(Date:6/1/2016)... Favorable Government Initiatives Coupled With ... Identification to Boost Global Biometrics System Market Through 2021  ... report, " Global Biometrics Market By Type, By ... 2011 - 2021", the global biometrics market is projected ... of growing security concerns across various end use sectors ...
(Date:5/9/2016)... May 9, 2016 Elevay is ... to expanding freedom for high net worth professionals seeking ... today,s globally connected world, there is still no substitute ... ever duplicate sealing your deal with a firm handshake. ... by taking advantage of citizenship via investment programs like ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... 2016  Blueprint Bio, a company dedicated to identifying, ... community, has closed its Series A funding round, according ... "We have received a commitment from Forentis Fund ... to meet our current goals," stated Matthew Nunez ... to complete validation on the current projects in our ...
(Date:6/23/2016)... Francisco, CA (PRWEB) , ... June 23, 2016 ... ... (EDC) software, is exhibiting at the Pennsylvania Convention Center and will showcase its ... Annual conference. ClinCapture will also be presenting a scientific poster on Disrupting Clinical ...
(Date:6/23/2016)... FRANCISCO , June 22, 2016  Amgen (NASDAQ: ... sponsorship of the QB3@953 life sciences incubator ... human health. The shared laboratory space at QB3@953 was ... overcome a key obstacle for many early stage organizations ... part of the sponsorship, Amgen launched two "Amgen Golden ...
(Date:6/22/2016)... Research and Markets has announced the addition of the ... The global biomarkers market ... 2013. The market is expected to grow at a five-year compound ... from $50.6 billion in 2015 to $96.6 billion in 2020. ... (2015 to 2020) are discussed. As well, new products approved in ...
Breaking Biology Technology:
Cached News: