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:3/23/2015)... --NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... market, announces its biometric payment technology, the Wocket® smart wallet, ... March 30 th . The new ... York markets. Gino Pereira ... new ad campaign following the recent initial shipment of Wocket ...
(Date:3/20/2015)... and Markets ( http://www.researchandmarkets.com/research/rswjb4/hand_geometry ) has announced the ... Report" report to their offering. This report ... The report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... Annual estimates and forecasts are provided for the period ...
(Date:3/20/2015)... , Mar. 19, 2015 Research and Markets ... "Iris Biometrics - Global Strategic Business Report" report ... markets for Iris Biometrics in US$ Thousands. The report provides ... , Japan , Europe ... , and Latin America . ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5
... percent of people with type 2 diabetes suffer kidney damage ... point they require either dialysis or kidney transplantation. Scientists have ... the glomeruli, blood vessels in the kidney, which spill the ... "albuminuria" do not prevent kidney failure. However, a ...
... identified a biological pathway connecting variation in the birds, aggression ... genome. The Proceedings of the National Academy of ... the experiments, conducted by the lab of neuroscientist Donna Maney ... research, which comprised behavioral observations of the study subjects in ...
... there is big business going on in their very small ... An international team of researchers, including Northern Arizona University ... the National Academy of Sciences that microbes, like many ... low. "Although hidden from the naked eye, microorganisms are ...
Cached Biology News:Joslin finds metabolic clues to diabetic kidney failure 2Wild sparrow study traces social behaviors in the field to specific gene 2Wild sparrow study traces social behaviors in the field to specific gene 3Wild sparrow study traces social behaviors in the field to specific gene 4
(Date:3/29/2015)... March 29, 2015  Caris Life Sciences® today ... Caris Molecular Intelligence®, the company,s panomic, comprehensive tumor ... between several rare and difficult to treat gynecological ... the potential to improve patient outcomes. These studies ... the Society of Gynecologic Oncology (SGO) 2015 Annual ...
(Date:3/29/2015)... 2015 Caris Life Sciences® today ... showing the presence of PD-1 and PD-L1 ... Using Caris Molecular Intelligence®, the company,s panomic ... of programmed cell death protein-1 (PD-1) in ... its ligand (PD-L1) expression was variable across ...
(Date:3/27/2015)... Earlier this year, the Capillus272Pro™ ... regrowth in adult men and women with androgenic alopecia ... classifications of IIa-V and Fitzpatrick Classification of Skin phototypes ... that over-promise and under-deliver, FDA Clearance underscores the safety ... among more than 80 million men and women who ...
(Date:3/27/2015)... März 2015  Peter Walter wurde als ... für seine bahnbrechende Arbeit ausgewählt, die sich ... werden, sowie für die Entschlüsselung der Komponenten ... Stress nutzen, der mit der Ansammlung von ... für Biochemie an der University of California, ...
Breaking Biology Technology:Caris Molecular Intelligence Facilitates Comparison of Biomarker Profiles to Inform Targeted Treatment Strategies in Distinct Gynecological Cancers 2Caris Molecular Intelligence Facilitates Comparison of Biomarker Profiles to Inform Targeted Treatment Strategies in Distinct Gynecological Cancers 3Caris Molecular Intelligence Facilitates Comparison of Biomarker Profiles to Inform Targeted Treatment Strategies in Distinct Gynecological Cancers 4Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 2Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 3Caris Life Sciences' Multiplatform Tumor Profiling Technology Identifies Expression of PD-1 and PD-L1 in Gynecologic Malignancies 4Dr. Robert Leonard Applauds FDA Clearance of Capillus272Pro™ Hair Loss Laser Cap 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 2Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 3Deutschstämmiger Zellbiologe Peter Walter gewinnt den Vilcek Prize in Biomedical Science 2015 4
... 7,2008, Signalife received a deficiency letter from the ... that Signalife would need to,comply with the $6 ... AMEX Rules 1003(a)(iii). This notification was,triggered by the ... million, which previously exempted Signalife from meeting the ...
... First New Agent for CLL Patients Approved by the ... Cephalon, Inc. (Nasdaq:,CEPH) today announced that the U.S. ... for Injection for the,treatment of patients with chronic lymphocytic ... The American Cancer Society,estimates that more than 15,000 new ...
... live study setup and launch..., WAYLAND, Mass., ... bio-pharmaceutical clinical trials software, announces the,launch of its ... Trident,s unique parameter driven + custom pluggable design,leaps ... deliver a new era,of needed scalability, productivity, and ...
Cached Biology Technology:AMEX Notifies Signalife That It Has Accepted Signalife's Plan of Compliance 2Cephalon Receives FDA Approval for TREANDA, a Novel Chemotherapy for Chronic Lymphocytic Leukemia 2Cephalon Receives FDA Approval for TREANDA, a Novel Chemotherapy for Chronic Lymphocytic Leukemia 3Cephalon Receives FDA Approval for TREANDA, a Novel Chemotherapy for Chronic Lymphocytic Leukemia 4Cephalon Receives FDA Approval for TREANDA, a Novel Chemotherapy for Chronic Lymphocytic Leukemia 5Tourtellotte's New Trident IWR(TM) Eliminates 12-Week Study Setup Lead Time for Clinical Trials 2Tourtellotte's New Trident IWR(TM) Eliminates 12-Week Study Setup Lead Time for Clinical Trials 3
... differences exist between the various commercial and ... slide used, the length and GC content ... the manufacturing protocol employed all influence the ... With all the different variables to ...
... Gel Stain combo offers these benefits: ... separately Offers a safer ... Eliminates risks to yourself, the environment and ... 100 bp to >30 kb. UltraPure Agarose is a ...
This is a PYREX replacement Allihn condenser with a 34/45 inner joint on the bottom for the No. CLS3840-S 125mL extractor system. The tubulation O.D. on the condenser is 10mm....
... contains 400 unique human proteins on ... The proteins, all extracellular proteins (EP) ... arrayed in quadruplicate for high-quality results. ... chip layout guarantee high validity and ...
Biology Products: