Navigation Links
DNA barcodes change our view on how nature is structured
Date:1/21/2014

How you seek is what you find

To understand how feeding interactions are structured, researchers from Finland and Canada chose to focus on one of the simplest food webs on Earth: the moths and butterflies of Northeast Greenland, as attacked by their specialist enemies, parasitic wasps and flies developing on their prey (called host), killing it in the process.

"What we found in this system was mind-boggling", explains Helena Wirta, the lead author of the study. "When we supplemented the traditional technique of rearing host larvae until the emergence of either the adult or its enemy with modern molecular techniques, every measure of food web structure changed. All of a sudden, we found three times as many interactions between species as before. On average, most types of predator proved less specialized than assumed, and most types of prey were attacked by many more predators than we had thought. Thus, the full web was simply more tightly knit than we initially believed."

"To understand just how much the method affected our perception of our single target web, we may compare variation among different techniques to variation among food webs previously described for different parts of the world", explains Tomas Roslin, who initiated the work. "Web structure simply varied manifold more among our different techniques than among localities from the UK to Japan. Thus, whatever we think that we know about food web structure across the globe may be dictated as much by how we have searched as by how species really interact."

The revealing inner of a bug

What allowed the researchers to dissect the food web with a new precision was the use of DNA barcodes.

"The basis of this approach is to identify species based on variation in a given gene", says Sean Prosser, who spent months in the lab fine-tuning the approach. "By targeting gene regions which differ between the predator and the p
'/>"/>

Contact: Tomas Roslin
tomas.roslin@helsinki.fi
358-408-683-611
University of Helsinki
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Virus barcodes offer rapid detection of mutated strains
2. Holding a mirror to brain changes in autism
3. New study will help protect vulnerable birds from impacts of climate change
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Fielding questions about climate change
6. Glacier-fed river systems threatened by climate change
7. How old are these rocks, how were they made, and how long ago did these geologic changes happen?
8. Energy requirements make Antarctic fur seal pups vulnerable to climate change
9. Why spring is blooming marvelous (and climate change makes it earlier)
10. Declines in Caribbean coral reefs pre-date damage resulting from climate change
11. Some corals like it hot: Heat stress may help coral reefs survive climate change
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
DNA barcodes change our view on how nature is structured
(Date:4/2/2015)... -- According to preliminary estimates Fingerprint Cards, ... than 125 MSEK. This exceeds the guidance provided by ... for Q1 2015 would be in line with the ... The operating result for the first quarter is estimated ... will as previously communicated be published on May 21. ...
(Date:4/1/2015)... , Apr. 1, 2015  NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce market, ... Wocket smart wallets is underway to early access pre-order ... group includes usage at retail outlets including Walmart, Target, ... Users report Wocket was accepted at all outlets and ...
(Date:3/31/2015)... , March 31, 2015  Elephant Talk Communications Corp. ... global provider of Software Defined Network Architecture (ET Software ... total revenue of approximately $20.4 million for the year ... $19.5 million for the year ended December 31, 2013. ... the Company had completed its multi-year transition away from ...
Breaking Biology News(10 mins):Fingerprint Cards Revises Revenues for Q1 2015 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... La Jolla, Calif., December 23, 2011 John C. Reed, ... Medical Research Institute (Sanford-Burnham), have been named as Fellows of ... as an AAAS Fellow is an honor bestowed upon AAAS ... were formally announced today in the AAAS News & Notes ...
... Researchers at the U.S. Department of Energy,s (DOE,s) ... breakthrough in engineering systems of RNA molecules through ... across a range of industries, including the development ... new "RNA machines", to adjust genetic expression in ...
... 22, 2011(BRONX, NY) Researchers at Albert Einstein College of ... known mechanism by which cells control the survival of messenger ... findings pertain to mRNAs that help regulate cell division and ... The research is described in today,s online edition of the ...
Cached Biology News:AAAS and Sanford-Burnham announce 2011 fellows 2DOE researchers achieve important genetic breakthroughs to help develop cheaper biofuels 2Built-in 'self-destruct timer' causes ultimate death of messenger RNA in cells 2Built-in 'self-destruct timer' causes ultimate death of messenger RNA in cells 3
(Date:4/16/2015)... 16, 2015  Scientists from Cleave Biosciences will be ... Horizon," at the American Association for Cancer Research Annual ... on Sunday, April 19, 2015 from 3:15pm to 5:15pm ... Biology, will present new in vivo and mechanism of ... of p97, a critical enzyme that controls various aspects ...
(Date:4/16/2015)... ROCKLAND, Mass. , April 16, 2015 /PRNewswire/ ... of Merck KGaA, Darmstadt, Germany ... Senior Vice President, Head of Global Clinical Development. ... development expertise, including experience in Oncology and Immunology. ... leadership ability, having served as a Vice President ...
(Date:4/16/2015)... British Columbia and MENLO PARK, ... Pharmaceuticals, Inc. (OTCQX: DMPI) (DelMar and the Company), ... cancer therapies in new orphan drug indications, today announced ... been added as a clinical trial site for the ... with refractory glioblastoma multiforme (GBM), the most common and ...
(Date:4/16/2015)... BETHESDA, Md. , April 16, 2015 /PRNewswire/ ... Bio"), a biotechnology company developing non-toxic DCVax® personalized ... has been included in the Loncar Cancer Immunotherapy ... help investors better track the immunotherapy field within ... founders have selected "the top 25 companies" in ...
Breaking Biology Technology:Cleave Biosciences to Participate in Special Session "New Drugs on the Horizon" at AACR Annual Meeting 2015 2Cleave Biosciences to Participate in Special Session "New Drugs on the Horizon" at AACR Annual Meeting 2015 3Alise Reicin Joins the Biopharmaceutical Business of Merck KGaA, Darmstadt, Germany as Head of Global Clinical Development 2Alise Reicin Joins the Biopharmaceutical Business of Merck KGaA, Darmstadt, Germany as Head of Global Clinical Development 3DelMar Pharmaceuticals Adds Fourth Clinical Trial Site in Phase I/II Multicenter Study of VAL-083 for Recurrent Malignant Glioma 2DelMar Pharmaceuticals Adds Fourth Clinical Trial Site in Phase I/II Multicenter Study of VAL-083 for Recurrent Malignant Glioma 3DelMar Pharmaceuticals Adds Fourth Clinical Trial Site in Phase I/II Multicenter Study of VAL-083 for Recurrent Malignant Glioma 4DelMar Pharmaceuticals Adds Fourth Clinical Trial Site in Phase I/II Multicenter Study of VAL-083 for Recurrent Malignant Glioma 5NW Bio Included In New Index Of The "Top 25 Cancer Immunotherapy Companies" 2NW Bio Included In New Index Of The "Top 25 Cancer Immunotherapy Companies" 3
... 23, 2011 Reportlinker.com announces that a new ... Global Biocompatible Materials Industry ... This report analyzes the worldwide markets for ... product segments: Polymeric Materials, Metallic Materials, Natural Materials, ...
... North Carolina State University have developed a faster, ... microfluidic devices, by using liquid metal. Microfluidic devices ... wide variety of applications, from testing minute blood ... making it easier to incorporate electrodes into microfluidic ...
... Corporation (Nasdaq: VRNM ), a pioneer in the ... today announced that it will release 2010 fourth quarter and ... close. In conjunction with the release, the Company will host ... at 5:00 p.m. ET. The call may be ...
Cached Biology Technology:Reportlinker Adds Global Biocompatible Materials Industry 2Liquid metal key to simpler creation of electrodes for microfluidic devices 2Verenium Corporation to Announce Fourth Quarter and Year-End 2010 Financial Results 2Verenium Corporation to Announce Fourth Quarter and Year-End 2010 Financial Results 3
... Accurate To score SNPs, ... sequencing, the gold standard in DNA analysis. ... The polymorphic locus can be confirmed by ... DNA sequencing also provides sequence context information, ...
... 3000 power supply is the most ... isoelectric focusing, DNA sequencing, isotachophoresis, SDS-PAGE, ... blotting, and submerged gel nucleic acid ... the PowerPac 3000 power supply offers ...
... GT cell and PowerPac basic power supply are ... acids in agarose gels. The wide mini format ... and electrodes, and leveling bubble. The PowerPac basic ... of 10-300 V, 4-400 mA, and 75 W. ...
... Simplify the process and you reduce the ... into the CEQ 8000. Developed using Beckman ... leadership in capillary electrophoresis technology, the CEQ ... system. This system automatically fills the capillary ...
Biology Products: