Navigation Links
Discovered: A mammal and bug food co-op in the High Arctic
Date:4/24/2013

University of Alberta researchers were certainly surprised when they discovered the unusual response of pikas to patches of vegetation that had previously been grazed on by caterpillars from a species normally found in the high Arctic.

U of A biology researcher Isabel C. Barrio analyzed how two herbivores, caterpillars and pikas, competed for scarce vegetation in alpine areas of the southwest Yukon. The caterpillars come out of their winter cocoons and start consuming vegetation soon after the snow melts in June. Weeks later, the pika starts gathering and storing food in its winter den. For the experiment, Barrio altered the numbers of caterpillars grazing on small plots of land surrounding pika dens.

"What we found was that the pikas preferred the patches first grazed on by caterpillars," said Barrio. "We think the caterpillar's waste acted as a natural fertilizer, making the vegetation richer and more attractive to the pika."

U of A biology professor David Hik, who supervised the research, says the results are the opposite of what the team expected to find.

"Normally you'd expect that increased grazing by the caterpillars would have a negative effect on the pika," said Hik. "But the very territorial little pika actually preferred the vegetation first consumed by the caterpillars."

The researchers say it's highly unusual that two distant herbivore speciesan insect in its larval stage and a mammalreact positively to one another when it comes to the all-consuming survival issue of finding food.

These caterpillars stay in their crawling larval stage for up to 14 years, sheltering in a cocoon during the long winters before finally becoming Arctic woolly bear moths for the final 24 hours of their lives.

The pika does not hibernate and gathers a food supply in its den. Its food-gathering territory surrounds the den and covers an area of around 700 square metres.

The researchers say they'll continue their work on the caterpillarpik
'/>"/>

Contact: Brian Murphy
brian.murphy@ualberta.ca
780-492-6041
University of Alberta
Source:Eurekalert

Page: 1 2

Related biology news :

1. New bird flu strain seen adapting to mammals, humans
2. Sea mammals find US safe harbor
3. Mutation altering stability of surface molecule in acid enables H5N1 infection of mammals
4. FASEB SRC announces conference registration open for: Mobile DNA in Mammalian Genomes
5. Paradise found for Latin Americas largest land mammal
6. Will changes in climate wipe out mammals in Arctic and sub-Arctic areas?
7. Nursing gerbils unravel benefit of multiple mothers in collective mammals
8. Rare form of active jumping genes found in mammals
9. Nutrient-sensing enzymes key to starvation response and survival in newborn mammals
10. Disaster map predicts bleak future for mammals
11. Rubbing boulders, fossil mammal teeth, barrier islands, and a change in volcanic behavior
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/30/2014)... reduce or reverse soil subsidence and reduce greenhouse ... Joaquin River Delta by Dartmouth College researchers and ... of the first to continually measure the fluctuations ... through wetlands, appears in the journal by ... agricultural drainage of organic soils has resulted in ...
(Date:10/30/2014)... Rochelle, NY, October 30, 2014—Oligonucleotide-based therapeutics present unique ... to cause reproductive and developmental harm. New consensus ... the combined chemical and biological characteristics of these ... Therapeutics , a peer-reviewed journal from Mary ... available free on the Nucleic Acid Therapeutics ...
(Date:10/30/2014)... , Oct. 29, 2014  Securus Technologies, ... justice technology solutions for public safety, investigation, ... has deployed exciting enhancements to its THREADS™ ... to provide actionable intelligence and focused leads ... to drive technological innovation through identifying and ...
Breaking Biology News(10 mins):Dartmouth study finds restoring wetlands can lessen soil sinkage, greenhouse gas emissions 2New guidelines for reproductive & developmental toxicity testing of oligonucleotide drugs 2Securus Technologies Adds Advanced Features to Its Industry-Leading Investigative Analytics Product 2
... has been decoded. Of all the puzzles it contains, though, ... blueprint for various proteins, the building blocks of each and ... control cell division in a healthy body, for instance? And ... subdivide and control over proteins gets out of hand? ...
... at the Texas Biomedical Research Institute and Yale University have ... appears to harbor genes with a major role in the ... Genomics Computing Center (GCC), the researchers found the region by ... factors for this complex disease, a process that led them ...
... There are 640 muscles in the human body, or maybe ... all depends on whom you ask. In any case, it is ... every one into his latest work, OpenSim, a software application that ... how people move. In the legs alone there are more ...
Cached Biology News:Cell cultures from a machine 2Texas Biomed develops new approach to study depression; finding may lead to new marker for risk 2OpenSim open-source software from Stanford accurately models human motion 2OpenSim open-source software from Stanford accurately models human motion 3
(Date:10/31/2014)... 2014  Tavistock Development Co. (TDC), a diversified ... groundbreaking of the GuideWell Innovation Center ... The 92,000-square-foot, three-story facility is the first multi-tenant ... designed specifically for life sciences, health innovation, and ... 650-acre Lake Nona Medical City, near the Sanford-Burnham ...
(Date:10/30/2014)... , October 30, 2014 Investor-Edge ... Inc. (NYSE MKT: ONVO), Medivation Inc. (NASDAQ: ... Synthetic Biologics Inc. (NYSE MKT: SYN), and Ironwood Pharmaceuticals ... can be accessed at: http://investor-edge.com/register . ... at 4,549.23, down 0.33%, the Dow Jones Industrial Average ...
(Date:10/30/2014)... October 30, 2014 2014 Deep ... Industryā€¯ is a professional and in-depth research report ... basic Naltrexone HCL information, including its definition, classification, ... industry overview. This research covers the international market ... global industry analysis covering macroeconomic environment & economic ...
(Date:10/30/2014)... Diego, CA (PRWEB) October 30, 2014 ... announced today that they have manually curated public data ... and non profit customers. the data is now ... manually curates and unifies public and internal data sources ... value and knowledge out of the data that becomes ...
Breaking Biology Technology:GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 2GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3Rancho BioSciences Manually Curated TCGA Data Sets Available 2
... Spanish . Tecnalia Research & Innovation and ... VII Framework Programme `Sporte2. The project will provide greater energy ... as sports halls and other leisure facilities. This objective will ... its three dimensions: generation, interchange with the energy grid and ...
... 2011 Spherix Incorporated (Nasdaq: SPEX ), ... syndrome and atherosclerosis; and providers of technical and regulatory ... today announced that its President, Dr. Robert Lodder, will ... Showcase 2011. Dr. Lodder will deliver the ...
... BioMed Realty Trust, Inc. (NYSE: BMR ... research and development facility at 3525 John Hopkins Court ... submarket of San Diego, California.  The building is 100% ... Diego, a world renowned public research university.  BioMed purchased ...
Cached Biology Technology:Tecnalia leads the integration of energy efficiency in sports facilities 2Spherix to Present at Two Upcoming Prominent Finance Conferences 2Spherix to Present at Two Upcoming Prominent Finance Conferences 3BioMed Realty Trust Acquires an Additional 48,300 Square Foot Research Facility in the Torrey Pines Submarket of San Diego 2BioMed Realty Trust Acquires an Additional 48,300 Square Foot Research Facility in the Torrey Pines Submarket of San Diego 3BioMed Realty Trust Acquires an Additional 48,300 Square Foot Research Facility in the Torrey Pines Submarket of San Diego 4
The product contains 10 ml Dynabeads Epoxy (4.5 m). Supplied at 4 x 10 8 beads/ml...
Porcine parvovirus and mycoplasma tested. Contains 0.5 g/L of trypsin (1:250) and 0.2 g/L of EDTA4Na in Hanks' Balanced Salt Solution without CaCl2 MgCl2 6H2O and MgSO4 7H2O. Contains phenol red....
... pPIC9K and pPIC3.5K vectors carry the kanamycin ... Reagent in Pichia. Spontaneous generation of multiple ... to increased levels of Geneticin Reagent. Pichia ... screened for their level of resistance to ...
...
Biology Products: