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:
(Date:8/12/2015)... SAN JOSE, Calif. , Aug. 12, 2015 ... leading developer of human interface solutions, today announced ... the recently announced Match-in-Sensor solution, have officially been ... (FIDO) Alliance. As part of the certification, Synaptics, ... the FIDO 1.0 Universal Authentication Framework (UAF) standard ...
(Date:8/6/2015)... BOSTON and TELTOW, Germany ... the 2015 Siggraph Conference, SensoMotoric Instruments (SMI) ... augmented reality , based on Epson,s Moverio ... eye tracking platform. With this new solution, unprecedented quality ... multi-modal, hands-free interaction with context-sensitive displays. For the first ...
(Date:8/4/2015)... Research and ... addition of the "Digital Forensics Market ... (Computer Forensics, Network Forensics, Mobile Device Forensics, ... and Region - Global Forecast to 2020" ... By Component (Hardware, Software, and Service), Sub-Segment ...
Breaking Biology News(10 mins):Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3Digital Forensics Market - The Market Represents a Compound Annual Growth Rate (CAGR) of 11.3% From 2015 to 2020 2
(Date:8/28/2015)... , Aug. 28, 2015 /PRNewswire/ - RepliCel ... stage regenerative medicine company focused on the development ... for the quarter ended June 30, 2015, corporate ... and management report are available at www.sedar.com ... . "RepliCel expects to launch ...
(Date:8/28/2015)... ... ... the initial launch of FireflySci Inc. (FFS) in early 2015, the company continues to shake ... as the Fonz in a lab coat and Large Marge have been posted on the ... , FireflySci is proud to be the only cuvette manufacturer is the world that ...
(Date:8/27/2015)... Reston, VA (PRWEB) , ... August 27, 2015 , ... ... government contractors solve complex business problems, is pleased to announce their ranking as one ... 34th annual ranking of the fastest-growing private companies across the nation. , “It is ...
(Date:8/27/2015)... 2015 /PRNewswire/ - Portage Biotech Inc. ("Portage") (OTC ... Pharmaceutical Holding Company Limited (Biohaven), announced today that ... of BHV-0223, a glutamate modulating agent. Biohaven filed ... recently obtained clearance from the U.S. Food and ... Portage holds 54% equity interest in Biohaven, a ...
Breaking Biology Technology:RepliCel Reports Second Quarter 2015 Financial Results 2RepliCel Reports Second Quarter 2015 Financial Results 3RepliCel Reports Second Quarter 2015 Financial Results 4RepliCel Reports Second Quarter 2015 Financial Results 5Cuvette Manufacturer FireflySci Launches Back to School Deals with Complimentary Shipping On All Orders 2Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 2Capital Edge Consulting Makes Inc. 5000 List of America’s Fastest-Growing Private Companies 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 2Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 3Portage's Biohaven doses first human subject in Phase 1 trial with lead drug candidate BHV-0223 4
Cached News: