Navigation Links
Parasites outweigh predators in Pacific Coast estuaries
Date:7/23/2008

In a study of parasites living in three estuaries on the Pacific coast of California and Baja California, researchers have determined that biomass of these parasites exceeds that of top predators, in some cases by more than 20 times.

Their findings, which could have significant ecological and biomedical implications, appear in this week's issue of the journal Nature.

Biomass is the amount of living matter that exists in a given habitat. It is expressed either as the weight of organisms per unit area or as the volume of organisms per unit volume of habitat.

Until now, scientists have believed that because parasites are microscopic in size they comprised a small fraction of biomass in a habitat, while free-living organisms such as fish, birds and other predators make up the vast majority.

"We quantified the biomass of free-living and parasitic species in three estuaries and discovered that parasites have substantial biomass in these ecosystems," said Armand Kuris, a zoologist at the University of California at Santa Barbara (UCSB), and a lead author of the paper.

"Parasites have as much, or even more, biomass than other important groups of animals--like birds, fish and crabs," said Ryan Hechinger, a marine scientist at UCSB and co-lead author of the paper.

The results are part of a study supported the National Science Foundation (NSF) and the National Institutes of Health through the agencies' joint Ecology of Infectious Diseases (EID) Program.

"Unlike large animals, such as birds, parasites are tiny and often easy to overlook," said Sam Scheiner, NSF program director for EID, co-funded by NSF's Directorates for Biological Sciences and Geosciences. "These results will cause ecologists and other scientists to completely reconsider their views."

Other principal investigators include Kevin Lafferty, a marine ecologist with the United States Geological Survey and Andrew Dobson,
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study shows parasites outweigh predators
2. Monarch butterflies help explain why parasites harm hosts
3. Disrupting common parasites ability to talk to each other reduces infection
4. Parasites might spur evolution of strange amphibian breeding habits
5. Predators and parasites may increase evolutionary stability
6. Coral reef fish harbor an unexpectedly high biodiversity of parasites
7. Social parasites of the smaller kind
8. Adaptation to parasites drive African fishes along different evolutionary paths
9. Sand dollar larvae use cloning to make change, confound predators
10. Zoologists challenge longstanding theory that eyespots mimic the eyes of predators enemies
11. Oceans fiercest predators now vulnerable to extinction
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Parasites outweigh predators in Pacific Coast estuaries
(Date:8/29/2014)... 2014) Scientists at the Barshop Institute for Longevity ... at the UT Health Science Center at San Antonio, ... of the longest-lived rodent, the naked mole rat. ... of naked mole rats protects and alters the activity ... obsolete proteins. , The factor also protects proteasome function ...
(Date:8/29/2014)... A leading U.S. Ebola researcher from the University of Texas ... a blend of three monoclonal antibodies can completely protect monkeys ... days after infection, at a time when the disease is ... written an editorial for Nature discussing advances in ... Marburg virus are among the most deadly of pathogens, with ...
(Date:8/29/2014)... type and number of connections in transcription factor networks ... in a study published in PLOS Computational Biology ... assortativity signature contributes to a network,s resilience against mutations. ... out-out assortativity of TFN models has a greater effect ... types of assortativity," said Dov A. Pechenick, PhD, lead ...
Breaking Biology News(10 mins):Factor in naked mole rat's cells enhances protein integrity 2Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2Assortativity signatures of transcription factor networks contribute to robustness 2
... a considerable amount of nitrogen into urban watersheds, ... habitats. However, many studies documenting the impacts of ... the contribution of leaky sewer systemsuntil now., Aging ... nitrogen into urban watersheds, diminishing both the quality ...
... of Evolution at Uppsala University, Sweden, has been granted funding ... project will make the valuable plants available to the whole ... Linnaeus,s disciple Carl Thunberg travelled with the Dutch East India ... In total he collected almost 28,000 plants on his journey, ...
... researchers at the University of Alberta have made a discovery ... and mad cow disease, adapt in order to spread between ... Valerie Sim, discovered that a miniscule change in the prions, ... to mimic and recreate new strains with which it ...
Cached Biology News:Pittsburgh's leaky faucet: How aging sewers are impacting urban watersheds 2Carl Thunberg's Japanese plants to be digitized 2Discovery may explain how prion diseases spread between different types of animals 2
(Date:8/29/2014)... Aug. 29, 2014 /PRNewswire/ - iCo Therapeutics ("iCo" ... reported financial results for the six months ended ... expressed in Canadian dollars and presented under International ... 2014 Highlights , Announced top-line results ... primary endpoint for subjects enrolled in the Phase ...
(Date:8/29/2014)... MA (PRWEB) August 29, 2014 A ... in the biotech start-up dense realm of Boston-Cambridge, is ... and able investors. James Sherley, the Director of Boston’s ... increasing the local and national visibility of his company ... September 2013. , In addition to a social media ...
(Date:8/28/2014)... 28, 2014 Best Sanitizers, Inc., the ... alcohol-based hand sanitizer, asks food processors and food handling ... hand sanitizer they’re currently using to Best Sanitizers’ ... is critical to fighting cross-contamination and the spread of ... believes there are key criteria that make a hand ...
(Date:8/28/2014)... YORK , Aug. 28, ... that a new market research ... catalogue: Whole Exome ... Kits (Library Preparation, Target Enrichment), ... (Sequencing by Synthesis), by Application ...
Breaking Biology Technology:iCo Therapeutics Announces Second Quarter 2014 Financial Results 2iCo Therapeutics Announces Second Quarter 2014 Financial Results 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 4The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13
... the world will present the latest breakthroughs in electro-optics, ... 2008 Conference on Lasers and Electro-Optics/Quantum Electronics and Laser ... Jose McEnery Convention Center in San Jose, Calif. ... the lasers and electro-optics community. It will be held ...
... due to blunt force trauma could be reduced by ... mixed in sterile water and injected into the blood ... of Biological Engineering . , Andrew Koob and ... rats which showed that PEG was effective in limiting ...
... Pharmaceutical Inc.,("Dragon Pharma" or the "Company" TSX: DDD; ... today announced the results,of the Annual Shareholders Meeting ... There were 48,663,865 shares equaling 69.81% of the ... the following,eight persons to serve as members of ...
Cached Biology Technology:Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 2Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 3Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 4Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 5Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 6Detecting dangerous chemicals with lasers, exploring the brain's circuitry with light and more 7
Request Info...
... Quickly, effectively seals labware. Waterproof, moisture-proof ... anhydrous materials. Can be folded repeatedly ... rupturing. Stretched lengthwise at 21C (70F), ... when tension is removed, film only ...
...
Normal human AB serum, pooled...
Biology Products: