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:2/5/2015)... Calif. , Jan. 27, 2015 /PRNewswire/ ... provider of globally deployed, innovative test solutions ... announced the delivery of its TS-323 ... Space Systems Company (LMSSC). GENASYS is a ... demands of mission-critical applications that require performance ...
(Date:2/5/2015)... MOUNTAIN VIEW, Calif. , Feb. 3, 2015 ... screen printer technology, demand from industries such as ... the global market for surface mount technology (SMT) ... manual equipment to automatic control will push the ... glue dispensers will remain steady as glue dispensers ...
(Date:1/22/2015)... 2015 Technology Showcase, Hall E -   EyeLock Inc. ... announced it will showcase its EyeLock ID technology integrated in ... of Energy,s Oak Ridge National Laboratory (ORNL) at ... iris identity authentication technology is being used to validate the ...
Breaking Biology News(10 mins):Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 2Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 3Marvin Test Solutions' GENASYS Platform Advances Mission-Critical Aerospace Production Test 4End-user Demand Spurs Global SMT Screen Printers and Glue Dispensers Market 2End-user Demand Spurs Global SMT Screen Printers and Glue Dispensers Market 3EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3
... prevention is worth a pound of cure" can easily ... Because taking off extra weight is an almost insurmountable ... especially childhood, is crucial to realizing optimal long-term health. ... being breastfed might predispose a person to being lean, ...
... The putative skull of Saint Bridget (Birgitta) of Sweden ... is probably not authentic. A new study conducted at Uppsala ... Saint Bridget and her daughter Catherine (Katarina), is not from ... not from the time period when Bridget and Catherine lived. ...
... research of Dr. Doris Taylor was achieved recently when ... agreement with Miromatrix Medical Inc. Dr. Taylor,s research ... that it had created a beating animal heart in ... the promise of one day enabling the replacement of ...
Cached Biology News:Later introduction of baby foods related to lower risk of obesity later in life 2The putative skull of St. Bridget can be questioned 2U of Minnesota finalizes license agreement to form start-up company based on Doris Taylor research 2
(Date:2/26/2015)... February 26, 2015 The Movement for ... to support life extension technologies and awareness. The event ... Coordinated Time, on March 21st 2015, in a live ... , Eric Schulke, Founder of MILE, says, “Our lives ... urgency. The Movement for Indefinite Life Extension is raising ...
(Date:2/26/2015)... 26, 2015  NuGene International, Inc. ("NuGene") (OTCQB: ... skin and hair rejuvenation, has announced that it ... record for investor relations and strategic communications. ... sales and diversification strategies – and we need ... shareholders," stated Ali Kharazmi CEO of NuGene when ...
(Date:2/26/2015)... , Feb. 26, 2015 BioEnterprise today ... companies have attracted more than $2 billion in growth ... local and national investors, strategic sources, state – including ... half of the $2 billion has been raised in ... comes on the heels of the BioEnterprise Midwest ...
(Date:2/26/2015)... (PRWEB) February 26, 2015 Already well ... gauging line by expanding its Length Gauge offerings with ... gauges. , Specifically, HEIDENHAIN’s pencil probe-style SPECTO ... force specification. Two new 1Vpp, 12mm stroke length ... force applications. One is a variant with a weak ...
Breaking Biology Technology:Indefinite Life Extension Activists Organize Online Demonstration 2Indefinite Life Extension Activists Organize Online Demonstration 3NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 2NuGene International, Inc. Selects Capital Market Relations for Strategic Investor Relations 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 2More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 4Accuracy and Versatile Gauging Go Hand in Hand at HEIDENHAIN 2
... of Energy,s Lawrence Berkeley National Laboratory and the ... world,s first all-integrated sensor circuit based on nanowire ... different crystalline materials. Their method can be used ... , Nanostructures made with specific chemical, electronic, ...
... Revenues - a record $35.5 million vs. $24.7 million in Q2 2007 ... - an increase of 43.4%, Q2 2008 Diluted Net Income per Share - ... ... Q2 2007 Q2 2008 New Bookings of $49.0 million vs. $34.5 million in Q2 2007, ...
... Conference, August 3-8, CHICAGO, Aug. 4 Criminal ... to reduce the spread of the virus.,Instead, it increases ... burdening women and other vulnerable groups who,are unable to ... violence,according to a commentary in the August issue of ...
Cached Biology Technology:A first in integrated nanowire sensor circuitry 2A first in integrated nanowire sensor circuitry 3A first in integrated nanowire sensor circuitry 4eResearchTechnology Reports Second Quarter 2008 Results 2eResearchTechnology Reports Second Quarter 2008 Results 3eResearchTechnology Reports Second Quarter 2008 Results 4eResearchTechnology Reports Second Quarter 2008 Results 5eResearchTechnology Reports Second Quarter 2008 Results 6eResearchTechnology Reports Second Quarter 2008 Results 7eResearchTechnology Reports Second Quarter 2008 Results 8eResearchTechnology Reports Second Quarter 2008 Results 9JAMA Commentary Opposes Criminal Punishment for HIV Exposure/Transmission 2JAMA Commentary Opposes Criminal Punishment for HIV Exposure/Transmission 3
... orbital shaker stands both present ... ergonomic height, and help protect ... welded tubular steel, these heavy-duty ... the weight and minimize the ...
... The dotLab System brings together two ... and immobilized capture surfaces. This combination ... technique for the detection of molecular ... fluorescent labels. , Protein-specific capture molecules ...
... Escherichia coli RY 13 5'G AATTC3' 3'CTTAA G5' ... min or ethanol precipitation. Storage Conditions: 10mM Tris-HCl ... 0.15% Triton X-100, 0.01% BSA, 50% glycerol. Shipping ... -20C. Unit Definition: One unit is defined as ...
The HEPTEST assays provide a sensitive, simple, rapid, and convenient in vitro quantitation of heparin, low molecular weight heparins, and heparinoids in plasma and whole blood. Sample Type: wh...
Biology Products: