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:10/25/2014)... 22, 2014 This report covers the specifics ... space in heavy pursuit of research due to its ... compared to other RNA components. miRNA,s non-coding nature and ... candidate for use as a biomarker for a variety ... and diagnostics for the advancement in therapeutic development. Furthermore ...
(Date:10/22/2014)... -- Leading identity analyst firm Acuity Market Intelligence forecasts that ... will have a chip-based National eID card, including near-complete ... Asia , with its vast population, is ... 60% of all National eID cards issued between 2014 ... National eID Industry Report: 2014 Edition" — ...
(Date:10/18/2014)... suspected genetic conditions, a certain type of exome sequencing ... than traditional molecular diagnostic methods, according to a study ... released to coincide with the American Society of Human ... protein­coding region of the genome (the complete set of ... organism), has been rapidly applied in research settings and ...
Breaking Biology News(10 mins):MicroRNA: An Insight to miRNA-based microarrays, diagnostics and therapeutics Overview, Cambridge Healthtech Advisors 2Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Study examines type of exome sequencing and molecular diagnostic yield 2Study examines type of exome sequencing and molecular diagnostic yield 3
... In a paper being presented in two American ... joint Estonian-French team demonstrated "for the first time ... suggesting that mitochondria may mechanically regulate nuclear function." ... over 10 years, reported that it recently "found ...
... of biology's most fundamental questions ?why males produce sperm ... a breakthrough that could lead to improved infertility treatment, ... led by Dr Josephine Bowles and Professor Peter Koopman ... of Queensland, has discovered that derivatives of Vitamin A ...
... Virginia Tech in the United States have determined the ... production xanthurenic acid (XA) in Anopheles gambiae, the malaria ... sexual reproduction of the malaria parasite (Plasmodium falciparum) in ... could be an avenue for development of drugs and ...
Cached Biology News:First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 2First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 3One big biology question solved 2Oxidation defense in mosquitoes benefits malaria parasite 2
(Date:10/22/2014)... 2014 Nuvilex, Inc. (OTCQB: NVLX) – According ... worldwide are living with diabetes, with  that number expected ... global market for diabetes treatments is approximately $500 billion.  ... died from pancreatic cancer.  Pancreatic cancer is the fourth ... the United States , and according ...
(Date:10/22/2014)... HONG KONG , Oct. 22, 2014 /PRNewswire/ ... announced today that rare disease expert John C. ... research. Dr. McKew brings more than two decades of ... the National Institutes of Health, Wyeth Research and Genetics ... will lead aTyr,s efforts to expand and translate its ...
(Date:10/20/2014)... YORK , Oct. 20, 2014 ... their experimental ZMapp™ antibody therapeutic to fight the ... how difficult and time-consuming the production of pharmaceuticals ... market research publisher said that while some may ... of this compound, those with industry knowledge are ...
(Date:10/20/2014)... 20, 2014 Asterias Biotherapeutics, Inc. (NYSE ... signed a Notice of Grant Award (NGA) with ... October 1, 2014.  The NGA provides for the ... release of additional grant funds pursuant to the ... clinical development of Asterias, product, AST-OPC1. The grant ...
Breaking Biology Technology:Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4
... XIFIN Inc., the leading provider of revenue ... that XIFIN,s CEO and Executive Chairman, Lale ... College Conference in New Orleans on April ... executives, laboratory administrators and pathologists from many ...
... friendlyHOUSTON, April 14 US Oncology, Inc., supporting the nation,s ... Web site, usoncology.com . In order to ... usoncology.com is part of a new branding effort ... aspect of cancer care. , , For the ...
... field of medical microbiology, biodefense and pathogens to febit, ... and HEIDELBERG, Germany, April 14 febit ... Ph.D., for its Scientific Advisory Board. Dr. Keim ... Division at TGen (The Translational ...
Cached Biology Technology:XIFIN Inc. CEO to Speak at Executive War College Conference 2XIFIN Inc. CEO to Speak at Executive War College Conference 3US Oncology Launches New Web Site 2US Oncology Launches New Web Site 3US Oncology Launches New Web Site 4US Oncology Launches New Web Site 5US Oncology Launches New Web Site 6Paul Keim Appointed to febit's Scientific Advisory Board 2
Reacts with the 80 kDa fragment of the M-chain of human merosin....
ICAD / DFF45 (NT) Affinity Purified Polyclonal Antibody...
... ( Abpromise for all tested ... Synthetic peptide derived from residues 231 ... (Note: the amino acid sequence is ... Entrez Gene ID: 80829 ...
AANAT [Arylalkylamine N-acetyltransferase; EC 2.3.1.87]...
Biology Products: