Navigation Links
Bering Sea study finds prey density more important to predators than biomass
Date:1/3/2013

the feeding behaviors of three co-occurring species in the Bering Sea, all of which consume juvenile pollock or krill black-legged kittiwakes, thick-billed murres and northern fur seals. When they attempted to find a spatial relationship between these predators and the pollock using areal biomass and numerical abundance, they found little correlation.

However, when they began finding small patches of prey at certain depths and of sufficient density, the predators were there. And though the scientists know why feeding efficiency they aren't sure how.

"To be honest, we aren't really sure how these predators which may travel many miles locate the densest aggregations at depths well below the surface and often at night," said Scott Heppell, a fisheries ecologist at Oregon State University and co-author on the PLOS ONE paper. "You wouldn't think murres and fur seals would have that much in common, but in this case they do."

"In a way, they're looking for the same thing that commercial fishing fleets look for high-quality prey in aggregations dense enough to be economical," added Heppell, an assistant professor of fisheries and wildlife at OSU.

Benoit-Bird likened the predator-prey link to locating a box of popcorn in a darkened movie theater. You may have to search for it, she noted, but if you find the popcorn box, the payoff will be much more significant than what you might get by stumbling upon individual kernels in the dark that are spread throughout the theater even though the number of kernels is the same.

That payoff is particularly meaningful for nurturing young, the researchers point out. During their two-year study, the research group tagged and observed female fur seals from St. Paul Island and Bogoslof Island as they swam hundreds of kilometers over a period of 1-2 weeks to gorge on nutrient-rich pollock then return to their homes to nurse pups.

They also tagged and observed adult murres an
'/>"/>

Contact: Kelly Benoit-Bird
kbenoit@coas.oregonstate.edu
541-737-2063
Oregon State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Big brains are pricey, guppy study shows
2. Hebrew University study finds key mechanism in calcium regulation
3. New study documents the natural relationship between CO2 concentrations and sea level
4. Stowers study hints that stem cells prepare for maturity much earlier than anticipated
5. Birdsong study pecks theory that music is uniquely human
6. Study turns parasite invasion theory on its head
7. Gout study offers genetic insight into disease of kings
8. Native orchid protection and conservation subject of new AgriLife Research study
9. Cell Transplantation study investigates fate and function of cells transplanted to the CNS
10. Study reports iron oxide nanoparticles effective for labeling human endothelial cells
11. Study looks at gray seal impact on beach water quality
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bering Sea study finds prey density more important to predators than biomass
(Date:8/28/2014)... the most commonly diagnosed learning disability in the ... occurs when the regions of the brain that ... use of non-invasive functional neuroimaging tools has helped ... However, most prior work has focused on only ... gap in our understanding of how multiple brain ...
(Date:8/28/2014)... mould in homes could pose a significant health risk to ... the Journal of Allergy and Clinical Immunology . , ... different countries, the research has found that the presence of ... asthma sufferers, as well as increasing the likelihood of developing ... team at the University of Exeter Medical School and is ...
(Date:8/28/2014)... more action is needed to ensure safeguards are in ... in PLOS ONE , researchers from Monash University, ... - combining results from different studies - to look ... areas, to determine whether they actually protect biodiversity. ... protecting an area from human exploitation made common sense, ...
Breaking Biology News(10 mins):Dyslexic readers have disrupted network connections in the brain 2Indoor mold poses health risk to asthma sufferers 2Protected areas proven to protect biodiversity 2
... innovative systems biology approach to understanding the carbohydrate structures ... how inflammatory illnesses and cardiovascular disease develop in humans. ... University at Buffalo chemical engineers. , Supported by ... ultimate goal of the project is to define novel ...
... Eastman Dental Center,s Hyun (Michel) Koo, D.D.S, Ph.D., $1.6 ... the single most prevalent and costly oral infectious disease ... results from the interaction of specific bacteria (such as ... using sucrose to help them, and other pathogens, to ...
... N.J. Dr. Dilhan Kalyon, Professor of Chemical ... Institute at Stevens Institute of Technology, has won ... The award, sponsored by Shell Global Solutions, Inc., ... made a significant impact in the field of ...
Cached Biology News:Researchers apply systems biology and glycomics to study human inflammatory diseases 2Researchers apply systems biology and glycomics to study human inflammatory diseases 3Eastman Dental Center awarded $1.6 million to find ways to prevent cavities 2
(Date:8/28/2014)... --  SunTrust Robinson Humphrey (STRH) today announced ... equity research team in biotechnology and oilfield services.  ... research demonstrates our commitment to providing our valued ... investment decision making," said Biff Woodruff , ... make significant investments in differentiated content at a ...
(Date:8/28/2014)... 28, 2014 A new market ... world is available from Strategic Consulting, Inc., the ... Industrial Microbiology Market Review, Fourth Edition: Global Review ... (IMMR—4) tracks and compares microbiology test volumes, market ... Europe and Asia, and forecasts future volumes and ...
(Date:8/27/2014)... Salt Lake City, Utah (PRWEB) August 27, 2014 ... new construction that will expand its current Salt Lake ... operations currently underway outside of Utah to ultimately create ... the next 20 years. , “Utah is home ... many of whom can be credited with Varian’s success ...
(Date:8/27/2014)... 2014   MSC , a healthcare performance improvement ... the appointment of Mary Beth Loesch to ... of experience preparing companies for rapid growth and market ... President of Corporate Development and Healthcare. In that role, ... as well as corporate strategy and marketing. Previously, Loesch ...
Breaking Biology Technology:SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 2SunTrust Robinson Humphrey Expands Equity Research in Healthcare and Energy 32 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 2Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 3MSC names Mary Beth Loesch President and CEO 2
... Today, Jazz,Pharmaceuticals, Inc. (Nasdaq: JAZZ ) announced ... issued an approvable letter for Once-A-Day,LUVOX(R) CR (fluvoxamine ... Pharmaceuticals, Inc. are seeking marketing,approval for the treatment ... obsessive compulsive disorder (OCD)., The FDA requested ...
... Protein Exports, and Biofuels Key Issues in 2008, ... country,of origin labeling and developments in biofuels are some ... & Agribusiness Outlook., The Outlook is produced annually ... provides information and analysis covering all of,the major sectors ...
... SOUTH SAN FRANCISCO, Calif., Dec. 21 Anesiva,Inc. ... of its public offering,of 11,111,111 shares of its ... their option to purchase an additional 1,234,568 shares.,The ... from the sale of the aggregate 12,345,679 shares ...
Cached Biology Technology:FDA Issues Approvable Letter for LUVOX(R) CR (Fluvoxamine Maleate) Extended-Release Capsules for the Treatment of Social Anxiety Disorder (SAD) and Obsessive Compulsive Disorder (OCD) 2Rabobank Releases Annual North American Food & Agribusiness Outlook 2Rabobank Releases Annual North American Food & Agribusiness Outlook 3Rabobank Releases Annual North American Food & Agribusiness Outlook 4