Navigation Links
Fish food fight: Fish don't eat trees after all, says new study
Date:11/24/2009

in Millbrook, N.Y., was a large-scale experiment on three lakes in Michigan. Researchers fertilized these lakes with a labeled form of carbon dioxide sprinkled on the lakes' surfaces over more than a month. They then analyzed how much of that labeled carbon showed up in animals at each position in the aquatic food web. Even when terrestrial plant matter was only about 20 percent of the available food, they found, the animals appeared to be composed of about 50 percent land-based carbon.

The UW study took a different approach. Brett and colleagues raised zooplankton in the lab, feeding them a diet of either pure algae, pure land-based carbon, or various mixtures of the two. They found that zooplankton fed a purely land-based diet survived and reproduced but were small and produced relatively few offspring. Zooplankton fed a diet of pure algae were 10 times bigger than their tree-fed twins and produced 20 times more offspring. Zooplankton fed a mixed diet were larger and produced more offspring as the proportion of algae in their diet went up. Even when zooplankton ate almost nothing but land-based carbon, nearly all their lipids came from algae.

"I think we were able to show that the terrestrial source is such low quality that it's inconceivable that it could be nearly as important as what that study suggested," Brett said.

This research was funded by the National Science Foundation. Co-authors are Sami Taipale and Hari Seshan of the UW and Martin Kainz of the Danube University Krems in Austria.

So why did the earlier study suggest that fish were eating land-based food? Brett believes the reason is those researchers discounted the idea of zooplankton migration, the daily movement down to deeper waters during the daytime to hide from predatory fish. Researchers sprinkled tagged food in the upper waters and assumed that any other food source must be land-based.

"The flaw was that there was an alternative source. They could h
'/>"/>

Contact: Hannah Hickey
hickeyh@uw.edu
206-543-2580
University of Washington
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Prevent periodontitis to reduce the risk of head and neck cancer
2. Periodontitis and myocardial infarction: A shared genetic predisposition
3. Time of day matters to thirsty trees, U of T researcher discovers
4. Ants are friendly to some trees, but not others
5. As ash borer claims more trees, researcher at ISU works for species survival
6. Electrical circuit runs entirely off power in trees
7. Large trees declining in Yosemite
8. New discovery suggests trees evolved camouflage defense against long extinct predator
9. Tires made from trees -- better, cheaper, more fuel efficient
10. Ferns took to the trees and thrived
11. When palm trees gave way to spruce trees
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... -- Earlier this year Donald Spector , Chairman of ... the most prolific inventors in the world, got a ... to third party agencies. Spector envisioned this technology even ... earliest known patents in this area. Now major technology ... care, elder care and hospital applications. This technology has ...
(Date:11/21/2014)... , Nov. 20, 2014 C-Labs LLC, ... the Internet of Things (IoT), today announced the appointment ... chief operating officer. Previously a strategic advisor to the ... and operations. Mr. Traynor is based out of the ... He reports to Chris Muench , Chief Executive ...
(Date:11/18/2014)... -- The Secure Identity & Biometrics Association (SIBA) and ... formation of The Airport Entry and Exit Working ... Biometric Entry and Exit Solutions Framework for Airports ... BORDERPOL, the international non-profit organization that works directly ... border security, traveler and migration systems. ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3
... stomach may be nearly as unique as your fingerprint, ... Medicine who have embarked on the early stages of ... detect all known types of microbes and borrowing statistical ... MD, a postdoctoral scholar in infectious diseases and geographic ...
... question of whether amino acids in sandwich-like proteins are ... the protein-folding process is best answered by "all of ... Houston. , This discovery, reported in today's issue of ... benefit future research on treatments for diseases related to ...
... Ebola virus reproduction in laboratory-grown cells is severely ... further study as possible treatments for Ebola virus ... by the National Institute of Allergy and Infectious ... of Health (NIH). , The researchers, whose paper ...
Cached Biology News:Stanford gut check shows diversity of intestinal ecosystem 2Stanford gut check shows diversity of intestinal ecosystem 3Conserved amino acids play both structural and mechanistic roles in sandwich-like protein 2Scientists discover how Ebola virus infects cells 2
(Date:12/17/2014)... Based on the revenues gained ... market is dominated by four major players contributing ... These players include GE Healthcare (U.K.), Siemens AG ... , Full Report Copy at http://www.marketsandmarkets.com/Market-Reports/surgical-imaging-market-210534462.html ... be attributed to its strong product portfolio, which ...
(Date:12/17/2014)... This report is a professional ... For an overview analysis, the report introduces quartz ... structure, industry overview, policy analysis, and news analysis, ... has witnessed rapid development with key manufacturers increasing ... report mentions quartz tubing upstream raw materials and ...
(Date:12/17/2014)... , Dec. 17, 2014  United Therapeutics Corporation ... executive promotions as well as changes to Martine ... Executive Promotions United Therapeutics announced the ... and Co-Chief Executive Officer and David Zaccardelli , ... In connection with these promotions, Dr. Rothblatt,s title will ...
(Date:12/15/2014)... PETACH TIKVAH, Israel , Dec. 15, ... BCLI ), a leading developer of adult stem cell ... Brainstorm Cell Therapeutics Ltd. was awarded a grant of ... Office of the Chief Scientist (OCS).  This is the ... grant support from the Office of the Chief Scientist, ...
Breaking Biology Technology:Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 2Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 3Global Refurbished Surgical Imaging Market by Product & Application is Estimated to Reach $1.25 Billion by 2019 - New Research Report by MarketsandMarkets 42020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 2United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 3United Therapeutics Corporation Announces Executive Promotions and CEO Compensation Change 4BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 2BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 3
... PITTSBURGH, Oct. 7 Today the National Collegiate ... of BMEStart, an award recognizing undergraduate excellence in ... other biomedical competition (BMEidea) because of its focus ... much experience with product development. , The ...
... (Nasdaq: SGMO ) today announced the pricing of a ... The offering is expected to close on or about October ... In addition, Sangamo has granted the underwriter a 30-day ... common stock to cover over-allotments, if any. , ...
... , DUBLIN, October 7 , ... Only - , - Direct Comparison ... Efficacy , Shire plc (LSE: SHP, ... the publication in Clinical,Nephrology of findings from a head-to-head clinical ...
Cached Biology Technology:NCIIA Announces New Undergraduate Competition 2Sangamo Announces Pricing of Public Offering of Common Stock 2Sangamo Announces Pricing of Public Offering of Common Stock 3Data From a Head-to-Head Crossover Study Evaluating FOSRENOL(R) and Sevelamer Published Today 2Data From a Head-to-Head Crossover Study Evaluating FOSRENOL(R) and Sevelamer Published Today 3Data From a Head-to-Head Crossover Study Evaluating FOSRENOL(R) and Sevelamer Published Today 4Data From a Head-to-Head Crossover Study Evaluating FOSRENOL(R) and Sevelamer Published Today 5Data From a Head-to-Head Crossover Study Evaluating FOSRENOL(R) and Sevelamer Published Today 6
... HistoMark Biotin Streptavidin-HRP Systems provide rapid, ... intracellular antigens in frozen or paraffin-embedded ... These systems also facilitate double or ... be performed simultaneously with primary antibodies ...
... content or with significant secondary structure are ... subjected to PCR result in little or ... be increased by the addition of enhancing ... an effective PCR enhancer for GC-rich templates., ...
... EPICENTREs patented MasterAmp™ 10X PCR ... performance and allows improved sensitivity and ... templates. Using MasterAmp™ PCR Enhancer in ... of DNA melting, increases enzyme?s thermal ...
... description: The "egg crate" style strip holder ... flat bottom strips. Linkage: This CLS number ... easily match Cornings product number. If showing ... old Sigma-Aldrich number (Z71,456-9) or contact customer ...
Biology Products: