Navigation Links
Whale's streaming baleen tangles to trap food
Date:3/13/2013

and collected samples from ram-feeding bowheads in Alaska, Werth began to compare how well the baleen trapped minute latex beads carried in flowing water.

First, he tested a small section of each type of baleen in a flow tank as he varied the flow speed from 10 to 120 cm s and altered the inclination of the baleen to the water flow from parallel to perpendicular. Monitoring the fringes and recording how many beads became lodged for 2 s or more, Werth saw that the bristles trapped most beads at the lowest speeds, and as the flow increased the bristles began streaming like hair, increasing the fringe's porosity and reducing the number of snagged particles: single baleen plates are less effective filters at higher swimming speeds.

However, Werth says, 'It doesn't make sense to look at flow across a single plate of baleen, it's like looking at feeding with a single tooth; you can't chew anything with just one tooth, you need a whole mouthful.' So, he built a scaled down rack of six, 20 cm long baleen plate fragments and tested how well they trapped the latex beads.

This time, Werth could clearly see the fringes from adjacent baleen plates becoming tangled and more matted as the flow increased, trapping the most particles at speeds ranging from 70 to 80 cm/s, which corresponds exactly with the swimming speed of bowhead whales skimming through shoals of copepods. However, when he compared the porosity of the baleen of both species, he was surprised by the similarity of the performances, despite the whales' different feeding styles.

Having found that baleen filters best at the natural swimming speed of skim-feeding bowheads, Werth is keen to scale up and investigate how full-sized 4 m long baleen plates perform


'/>"/>

Contact: Nicola Stead
nicola.stead@biologists.com
44-012-234-25525
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related biology news :

1. Genetic survey of endangered Antarctic blue whales shows surprising diversity
2. Giant squids giant eyes: The better to see hungry whales with
3. New iPad, iPhone app helps mariners avoid endangered right whales
4. Study amplifies understanding of hearing in baleen whales
5. A whale of a discovery: New sensory organ found in rorqual whales
6. Scientists discover a new sensory organ in the chin of baleen whales
7. First paternity study of southern right whales finds local fathers most successful
8. New DNA-method tracks fish and whales in seawater
9. Long menopause allows killer whales to care for adult sons
10. Eating right key to survival of whales and dolphins: UBC research
11. Multi-tasking whales sing while feeding, not just breeding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/6/2015)... 2015  Today, U.S. Congressman Mike Honda ... to learn firsthand how Silicon Valley technologies can ... a world leader in multi-factor identity management and ... federal agencies and commercial organizations achieve new levels ... "The vast majority of network breaches can be ...
(Date:8/5/2015)... August 5, 2015 According to ... Management Market by Software, Services, Vertical (BFSI, Airport, IT & ... - Global Forecast to 2020", published by MarketsandMarkets, defines ... globally into various segments. The global PIAM Market is ... $546.2 Million by 2019, at a CAGR of 14.9 ...
(Date:8/4/2015)... 2015 Research ... the addition of the "Digital Forensics ... Sub-Segment (Computer Forensics, Network Forensics, Mobile Device ... Vertical and Region - Global Forecast to ... By Component (Hardware, Software, and Service), ...
Breaking Biology News(10 mins):Rep. Honda to Visit Crossmatch in Redwood City 2Physical Identity and Access Management Market Worth $546.2 Million by 2019 2Physical Identity and Access Management Market Worth $546.2 Million by 2019 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 4Digital Forensics Market - The Market Represents a Compound Annual Growth Rate (CAGR) of 11.3% From 2015 to 2020 2
... gene they suspect plays an important role in triggering ... century-and-a-half ago. , And the pathogen that contains this ... the modern world?on the order of billions of dollars ... Avr3a, in a study that appears online in the ...
... Created as an alternate route of drug administration to ... skin patches are rapidly becoming an important healthcare product ... of chronic conditions such as angina, hypertension and HRT, ... transdermal patches for a host of new conditions wind ...
... Microarray technology can be used to identify each stage ... newly published report. , Melanomas grow in two phases: ... metastasize (spread cancer to other parts of the body) ... a large primary melanoma into radial and vertical portions, ...
Cached Biology News:Researchers find gene that may be at root of potato blight 2Researchers find gene that may be at root of potato blight 3
(Date:9/2/2015)... DUBLIN , Sep. 02, 2015 ... ) has announced the addition of Jain PharmaBiotech,s ... Markets and Companies" to their offering. ... markets based on technologies and applications. The report ... basis for estimation of markets. Technologies include array ...
(Date:9/2/2015)... 02, 2015 ... announced the addition of Jain PharmaBiotech,s new ... Companies" to their offering. ... besides fluorescence in situ hybridization (FISH), comparative ... cytogenetics includes application of nanobiotechnology, microarrays, real-time ...
(Date:9/2/2015)... , Sept. 2, 2015 Australian prostate ... a prestigious Australian science prize recognising ,outstanding, science that ... track to globally launch a novel prostate cancer diagnostic ... a high level consortium taking out the peer-reviewed Australian ... Scientific Research. This prize is awarded ...
(Date:9/2/2015)... ZIONA, Israel , September 2, ... TASE: BVXV) today announced the intent of the National Institute ... National Institutes of Health (NIH) within the Department of Health ... trial to be held in the United States ... the use of BiondVax,s universal flu vaccine candidate, Multimeric-001 (M-001), ...
Breaking Biology Technology:Global Biochips and Microarrays Technologies, Markets and Companies Report 2015 with Market Size in 2014 and Projected Value for the Years 2019 and 2024 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 2Global Cytogenetics Technologies Study 2015-2025 - Latest Markets and Companies Analysis 3Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 2Prostate Cancer Company Minomic Wins Prestigious Eureka Science Prize 3BiondVax Announces Intent to Launch a Phase 2 Trial in the United States in Collaboration with the U.S. National Institutes of Health 2BiondVax Announces Intent to Launch a Phase 2 Trial in the United States in Collaboration with the U.S. National Institutes of Health 3
... Oct. 29 MannKind,Corporation (Nasdaq: MNKD ) will ... 5, 2008 at 8:00 a.m. EST., Management of ... the,third quarter financial results, clinical progress and other Company,developments ... from the,Company will be its Chairman and Chief Executive ...
... (Nasdaq: SGMO ) today reported third quarter 2008,financial ... September 30, 2008, Sangamo reported a,consolidated net loss of ... loss of $4.3 million, or $0.11 per share, for ... the company had cash, cash equivalents and,investments of $59.5 ...
... Pharmaceuticals Inc.,(Nasdaq: TRBN ) today announced that executives ... at two upcoming industry and/or investor,conferences:, -- Nov. ... the,New York Palace Hotel, 455 Madison Ave. in New ... president, is scheduled to present,at 9:55 a.m. EST., ...
Cached Biology Technology:MannKind Corporation to Hold Third Quarter Financial Results Conference Call on November 5, 2008 2Sangamo BioSciences Reports Third Quarter 2008 Financial Results 2Sangamo BioSciences Reports Third Quarter 2008 Financial Results 3Sangamo BioSciences Reports Third Quarter 2008 Financial Results 4Sangamo BioSciences Reports Third Quarter 2008 Financial Results 5Sangamo BioSciences Reports Third Quarter 2008 Financial Results 6Sangamo BioSciences Reports Third Quarter 2008 Financial Results 7Trubion Announces Presentations at Upcoming Investor Conferences 2
... ISO 9001:2000 Certified USDA Research Registered OLAW ... Training AALAS Certified Technicians ... GLP Documentation Upon Request Focus ... for all your custom immunology service needs. ...
biotin-4-fluorescein...
Human IL-17D Affinity Purified Polyclonal Ab...
Agar, 5 lb. Bacteriological.Moisture: < 10%, ash: < 6.5%. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Biology Products: