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:7/7/2015)... 2015 Research and ... of the "Capacitive Fingerprint Sensors Patent Landscape" ... this date, fingerprint sensing technology is the most ... are well developed. This patent landscape focuses on ... The domain of capacitive fingerprint sensors is closely ...
(Date:7/7/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... market announces a revised version of one of its first 30 ... on CNBC in New York , ... San Francisco metro areas.    , ... to replace all the cards in your wallet and keep your ...
(Date:7/2/2015)... 25, 2015 Research and ... "Next Generation Biometrics Market by Application, Technology, Function ... to their offering. The next generation biometrics ... at a CAGR of 17.9% between 2015 and 2020 ... for the market. Safran SA ( ...
Breaking Biology News(10 mins):Worldwide Capacitive Fingerprint Sensors Patent Landscape Market Report 2015-2020 - Main IP Holders include Seiko Epson, AuthenTec, Sony and STMicroelectronics 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 3Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 2Next Generation Biometrics Market 2015 - Global Forecast to 2020 with Safran, NEC, 3M Cogent, Fujitsu & Suprema Dominating the $24 Billion Market 3
... for uncoiling long strands of DNA and forming them ... act as wires in biologically based electronics and medical ... biomolecular engineering at Ohio State University. , In the ... Academy of Sciences, Lee and postdoctoral researcher Jingjiao Guan ...
... flying in the dark because of a remarkable auditory ... by listening to echoes. But an Ohio University neurobiology ... , John Zook's studies of bat flight suggest that ... and catch insects in midair. His preliminary findings, presented ...
... team consisting of researchers from McGill/MUHC and the ... $700,000 by the Canadian Institutes of Health Research ... suffered by some women during sexual intercourse. The ... psychologists, gynecologists, physical therapists and statistician/epidemiologists, to root-out ...
Cached Biology News:Researchers make long DNA 'wires' for future medical and electronic devices 2Bats use touch receptors on wings to fly, catch prey, study finds 2Bats use touch receptors on wings to fly, catch prey, study finds 3MUHC investigators search for the root of sexual pain in women 2
(Date:7/27/2015)... Junto Health, a company that helps major ... new technology solutions, today announced the launch of a ... in health care policy consulting. Working together with SPG, ... innovation process while, at the same time, they are ... health care finance and the delivery of health care ...
(Date:7/24/2015)... July 24, 2015 Ryan & Maniskas, LLP ... United States District Court for the Northern District of ... entities that purchased the common stock of Avalanche Biotechnologies, Inc. ... 31, 2014 and June 15, 2015, inclusive (the "Class Period"). ... 2015, move the Court for appointment as a lead plaintiff ...
(Date:7/24/2015)... July 24, 2015 Origin Agritech Limited (NASDAQ GS: ... seeds in China , today announced that ... year 2015 ended June 30, 2015, before the market opens ... host a teleconference on August 5th, 2015, at 9:00 a.m. ... to discuss the results. To participate in the call, please ...
(Date:7/23/2015)... ... , ... The health and wellness of brain tumor caregivers, often a spouse, ... diagnosis. The American Brain Tumor Association presents interactive sessions that address shifting the mindset ... 24-25 in Chicago. , “We have understood for a long-time now that caregivers ...
Breaking Biology Technology:Junto Health Announces a Unique Partnership with Sachs Policy Group 2Junto Health Announces a Unique Partnership with Sachs Policy Group 3Junto Health Announces a Unique Partnership with Sachs Policy Group 4Ryan & Maniskas, LLP Announces Class Action Lawsuit Against Avalanche Biotechnologies, Inc. 2Ryan & Maniskas, LLP Announces Class Action Lawsuit Against Avalanche Biotechnologies, Inc. 3Origin Agritech Limited to Announce Third Quarter Fiscal 2015 Unaudited Financial Results on August 5th, 2015 2Origin Agritech Limited to Announce Third Quarter Fiscal 2015 Unaudited Financial Results on August 5th, 2015 3Reframing the Caregiver and Patient Mindset: Coping with the ‘New Normal’ 2Reframing the Caregiver and Patient Mindset: Coping with the ‘New Normal’ 3
... announced today that it has completed patient enrollment ... company,s investigational,once-daily oral anti-cancer drug, for the second-line ... studies -- ZODIAC (ZACTIMA in,cOmbination with Docetaxel In ... Alimta in Lung cancer) -- are the second ...
... DIEGO, March 12 Volcano Corporation,(Nasdaq: VOLC ... and,functional measurement (FM) products designed to enhance the ... said today that it,will be participating in the ... Monday, March 17., The presentation by Scott ...
... March 12 Allergy Standards LTD,("ASL"), the internationally ... its participation at the 2008 American Academy of,Allergy, ... in,Philadelphia, PA March 14th-18th., "The AAAAI conference ... research work in the asthma and allergy spaces," ...
Cached Biology Technology:AstraZeneca Completes Enrollment in Two Pivotal Phase III Studies of the Investigational Drug Vandetanib (ZACTIMA(R)) in Non-Small Cell Lung Cancer (NSCLC) 2AstraZeneca Completes Enrollment in Two Pivotal Phase III Studies of the Investigational Drug Vandetanib (ZACTIMA(R)) in Non-Small Cell Lung Cancer (NSCLC) 3Volcano Corporation Presentation at Cowen Healthcare Conference to be Webcast 2
Human/Rat Neurogenin-2 MAb (Clone 7G4) Protein Family: Neural Crest Cell Markers, Transcription Factors...
Rat CINC-2 alpha/beta Affinity Purified Polyclonal Ab...
Monkey IL-2 ELISPOT Kit with white/opague microtiter plates...
Mouse TREM-2 Affinity Purified Polyclonal Ab...
Biology Products: