Navigation Links
Do parasites upset food web theory?
Date:6/12/2013

Parasites comprise a large proportion of the diversity of species in every ecosystem. Despite this, they are rarely included in analyses or models of food webs. If parasites play different roles from other predators and prey, however, their inclusion could fundamentally alter our understanding of how food webs are organized. In a paper published 11 June in the open access journal PLOS Biology, Santa Fe Institute Professor Jennifer Dunne and her team test this assertion and show that including parasites does alter the structure of food webs, but that most changes occur because of an increase in diversity and complexity, rather than from unique characteristics of parasites.

"Current food web models and theory were developed with data for free-living species," said Dunne. "We wanted to understand whether including parasites alters network structure in unique ways, or if observed changes are consistent with the addition of any types of species and links to a food web."

The group of researchers, which included parasitologists and food web ecologists, analyzed highly resolved datasets for seven coastal estuary and marine food webs. They compared three versions of each food web dataset: webs without parasites; webs that included parasites and all of their links to other species; and an intermediate case that included parasites but excluded the "concomitant" links between a predator and the parasites of its prey.

The team found that including parasites altered many aspects of network structure, such as the distribution of feeding links per species, the average shortest feeding chain between pairs of species, and the proportion of species that are omnivores or cannibals. But a closer look suggested that most of these changes were generic effects of increasing the overall diversity and complexity of the network, rather than unique effects attributable to the parasites' roles in food webs.

"Our analyses show that in many ways p
'/>"/>

Contact: Bryan Ghosh
bghosh@plos.org
44-122-344-2837
Public Library of Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. Weakness can be an advantage in surviving deadly parasites, a new study shows
2. Scientists find Achilles heel in life-threatening malaria parasites
3. T cells hunt parasites like animal predators seek prey, a Penn Vet-Penn Physics study reveals
4. Elsevier launches International Journal for Parasitology: Parasites and Wildlife
5. Single-cell parasites co-opt ready-made genes from host: UBC research
6. Belgian scientists develop way to detect superparasites
7. Parasites of Madagascars lemurs expanding with climate change
8. Young malaria parasites refuse to take their medicine, may explain emerging drug resistance
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/2/2015)... April 2, 2015 According to ... attributed to somewhat higher than 125 MSEK. This exceeds ... report 2014 that revenues for Q1 2015 would be ... reported for Q4 2014. The operating result for the ... The complete interim report will as previously communicated be ...
(Date:4/1/2015)... , April 1, 2015   Medisafe ™, ... million users across iOS and Android ... begun integrating biofeedback into the platform to allow patients ... outcomes. For the first time, patients will be able ... a dose impacts important biometrics, such as glucose levels ...
(Date:3/30/2015)... DUBLIN , Mar. 26, 2015 Research and ... addition of the "Global Gesture Recognition Market in ... The analysts forecast the Global Gesture Recognition market ... 12.8% over the period 2013-2018. Gesture recognition ... respond to different gestures of an individual. Gesture recognition ...
Breaking Biology News(10 mins):Fingerprint Cards Revises Revenues for Q1 2015 2Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
... could help reduce the number of people in the ... for survival. Writing in a forthcoming issue of the ... publication, researchers from the University of Malaya, explain how ... logic to combine disparate problems and provide a more ...
... cell surface receptors that play an important role in many ... breast cancer after only six weeks of use, a scientist ... 17 April). Dr. Angel Rodriguez, from the Lester and ... said that the work demonstrated for the first time that ...
... Olympics, LAS VEGAS, April 16 ... a leading provider of video content,identification and ... of VideoDNA(TM) Live, a solution specifically designed ... Beijing Olympic Games. The VideoDNA Live,service offers ...
Cached Biology News:Fuzzy logic water quality 2New type of drug shrinks primary breast cancer tumors significantly in just 6 weeks 2Vobile Launches VideoDNA Live; Enables Real-Time Digital Content Protection for Live Broadcast Events 2Vobile Launches VideoDNA Live; Enables Real-Time Digital Content Protection for Live Broadcast Events 3
(Date:5/4/2015)... May 04, 2015 Genedata, a ... discovery and life science research, today announced the ... latest version of its enterprise solution for biologics ... enables more efficient discovery and development of novel ... integrate and address protein optimization and developability requirements. ...
(Date:5/4/2015)... 4, 2015  Soligenix, Inc. (OTCQB: SNGX) (Soligenix or ... address unmet medical needs in the areas of inflammation, ... presenting preclinical data from three of its biodefense programs ... Technology Conference on May 12-14, 2015 to be held ... Plaza, St. Louis MO 63101. ...
(Date:5/4/2015)... 4, 2015 - New Massive ... students prepare for the United States Medical Licensing Examination ... scientific, technical and medical information products and services, announced ... Open Online Course) designed to help medical students prepare ... 1, the first and most daunting of the three ...
(Date:5/4/2015)...   Intrexon Corporation (NYSE: XON ) ... results after the market closes on May 11, 2015.  ... at 5:30 PM ET to discuss the results and ... call may be accessed by dialing 1-888-346-3959 (Domestic US) ... Conference Call."  Participants may also access the live webcast ...
Breaking Biology Technology:Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 2Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 3Genedata Biologics 5.0 – Antibody Engineering and Developability Assessment Advances 4Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 2Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 3Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 4Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 5Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 6Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 7Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 8Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 9Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 10Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 11Soligenix Announces Presentation and Poster at the 2015 Chemical and Biological Defense Science and Technology Conference in St. Louis, MO 12Elsevier's Free MOOC Prepares Med Students for Licensing Exam 2Elsevier's Free MOOC Prepares Med Students for Licensing Exam 3Intrexon to Announce First Quarter 2015 Financial Results on Monday, May 11, 2015 2
... Based on Company,s, microRNA Technology, Developed by Columbia University Medical Center, ... Approved for Clinical use Acquires CLIA-certified lab to Expedite Commercialization of its ... microRNA-based Tests, Expands Pipeline With Three Additional microRNA-based ... Development, ...
... Calif., Aug. 18 VNUS(R) Medical,Technologies, Inc. (Nasdaq: ... and,revises its full year 2008 guidance. The Company ... and certain balance sheet accounts,to record additional expenses ... in prior periods since the adoption of Statement,of ...
... BeaconEquity.com announces the,availability of Trade Alerts on stocks making ... trading notes for free by visiting:, http://www.BeaconEquity.com/m , Today,s ... Pfizer Inc.,(NYSE: PFE ), Amgen Inc. (Nasdaq: AMGN ... BIIB ) and Gilead Sciences Inc. (Nasdaq: GILD ...
Cached Biology Technology:Rosetta Genomics Reports Second Quarter 2008 Financial Results 2Rosetta Genomics Reports Second Quarter 2008 Financial Results 3Rosetta Genomics Reports Second Quarter 2008 Financial Results 4Rosetta Genomics Reports Second Quarter 2008 Financial Results 5Rosetta Genomics Reports Second Quarter 2008 Financial Results 6Rosetta Genomics Reports Second Quarter 2008 Financial Results 7Rosetta Genomics Reports Second Quarter 2008 Financial Results 8Rosetta Genomics Reports Second Quarter 2008 Financial Results 9Rosetta Genomics Reports Second Quarter 2008 Financial Results 10Rosetta Genomics Reports Second Quarter 2008 Financial Results 11Rosetta Genomics Reports Second Quarter 2008 Financial Results 12VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 2VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 3VNUS Corrects Second Quarter 2008 Results and Revises Full Year 2008 Guidance 4BeaconEquity.com Issues Trade Alerts on Biotechnology Stocks: ELN, PFE, AMGN, DNA, BIIB, GILD 2BeaconEquity.com Issues Trade Alerts on Biotechnology Stocks: ELN, PFE, AMGN, DNA, BIIB, GILD 3
RNase-Free DNase 50 l...
supplied with 10x reaction buffer...
... RNase H degrades, as an ... DNA hybrids of natural origin, ... of synthetic complexes, e.g. poly(A) x ... 5-phosphate and 3-OH termini. Nearly no ...
Unit Definition: 1 U corresponds to the amount of enzyme which produces 1 mol protons per minute at pH 5.5 and 30C (peptin from citrus peel, Fluka-No. 76280, as substrate)...
Biology Products: