Navigation Links
Mutual benefits: Stressed-out trees boost sugary rewards to ant defenders
Date:11/5/2013

d then we realized that carbon exchange can explain it."

To test whether water limitation strengthens the defensive mutualism between Ecuador laurel trees and Azteca ants, Pringle and her colleagues studied the interaction at 26 sites in seasonally dry tropical forests along the Pacific coast of southern Mexico and Central America. The coastal sites span 1,426 miles, with annual precipitation increasing fourfold from the northernmost to the southernmost site. The findings reported in PLOS Biology are based on observations as well as field experiments, physiological data and an evolutionary model.

Ecuador laurels are deciduous, shedding their leaves during the dry season and growing new ones each rainy season. Pringle and her colleagues found that the strength of the tree-ant mutualism as measured by investment of trees in sugar for ants and defense of leaves by ants was greater at sites with longer dry seasons.

Laurel trees don't feed ants sugar directly. Instead, they host scale insects, familiar to gardeners as common backyard pests, which produce the honeydew. Scale insects are the middlemen in this protection racket: through the scale insects, the trees indirectly pay a carbon fee, in the form of sugar-rich sap that is distilled into honeydew, to the ants in exchange for guard duty.

"When ants patrolling the surface of the tree encounter a leaf-eating insect, they bite the insect until it falls from the tree," Pringle said. "We found that at the drier sites, the larger ant colonies were more likely to find such intruders, and the colonies sent more ants to attack the leaf-eaters and chase them away."

The fact that laurel trees at drier sites pay their ant protectors higher "wages" suggests that the potential costs of defoliation outweighs the relatively modest price of supporting more ants. Pringle and her colleagues used a mathematical model to test this idea, looking at the relative costs and benefits of c
'/>"/>

Contact: PLOS Biology
biologypress@plos.org
Public Library of Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Warm winters let trees sleep longer
2. Redwood trees reveal history of West Coast rain, fog, ocean conditions
3. Theres gold in them thar trees
4. Despite menu changes, calorie and sodium levels in chain restaurant entrees remain the same overall
5. Watering the forest for the trees emerging as priority for forest management
6. Family trees for yeast cells
7. US urban trees store carbon, provide billions in economic value
8. Researchers pinpoint how trees play role in smog production
9. Campus as laboratory: U-M student biologists use Diag trees to help solve gypsy moth mystery
10. New study will predict how trees will adapt to rapid climate change
11. Death of hemlock trees yields new life for hardwood trees, but at what cost to the ecosystem?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... Reactions among minerals and organic compounds in hydrothermal environments ... they provide energy for the deep biosphere, and may ... little is known about how minerals influence organic reactions. ... have demonstrated how a common mineral acts as a ... need for toxic solvents or expensive reagents. , At ...
(Date:7/28/2014)... 10 U.S. cities that have seen an increase in ... road closures, overwhelmed storm drains and compromised infrastructure--are on ... report. , This nuisance flooding, caused by rising sea ... 300 and 925 percent since the 1960s. , The ... around the United States, also finds Annapolis and Baltimore, ...
(Date:7/28/2014)... study found that 73 percent of adult survivors of ... metabolic syndrome and related health problems by failing to ... current issue of the journal Cancer . , ... childhood cancer in the study had metabolic syndrome, an ... pressure, abdominal obesity, elevated triglyceride and other abnormalities that ...
Breaking Biology News(10 mins):Mineral magic? Common mineral capable of making and breaking bonds 2Mineral magic? Common mineral capable of making and breaking bonds 3NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 2NOAA: 'Nuisance flooding' an increasing problem as coastal sea levels rise 3Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3
... Md., Sept. 19, 2012  BioFortis Inc., a leading ... research space, today introduced its Next Generation ... It will help pharmaceutical, government and academic ... translational studies to safely and effectively conduct ...
... Va.Dr. John P. Holdren, White House Office of Science ... roster of military and government leaders at the Office ... and ASNE Expo, officials announced Sept. 18. Holdren, ... and co-chair of the President,s Council of Advisors on ...
... residents with disabilities, along with their families, can look ... Developmental Disabilities Institute (DDI) at Wayne State University. ... from the U.S. Administration for Children and Families. ... contributing to the development of inclusive communities and quality ...
Cached Biology News:BioFortis Inc., Introduces Next Generation Biobanking Software Platform for Biomarker-Based Clinical Research 2ONR lines up speakers and technologies for 2012 Naval Conference 2Wayne State receives $2.8 million grant from US Administration for Children and Families 2Wayne State receives $2.8 million grant from US Administration for Children and Families 3
(Date:7/29/2014)... The first product launch from start-up Hurley Research ... What sets Droidles completely apart from other stand alone ... to communicate, share code with each other and evolve ... invention is the system,” said Hurley Research founder Jay ... their own, both physically and on the internet." Remote ...
(Date:7/29/2014)... The prestigious "Discovery or Exploration in ... awarded to Juliana Hillis and Kaylie O’Connell, students at ... “From an Egg, Everything: America’s First IVF Baby". This ... the National History Day program during a week-long final ... in Washington, D.C. , The growing popularity of the ...
(Date:7/29/2014)... CA (PRWEB) July 29, 2014 ... medical devices, and cloud based eClinical technologies, have been ... Device Online. These follow a long line of white ... profile publications including Life Science Leader, Pharmaceutical Online, and ... Clinovo provided a paper by CTO Marc Desgrousilliers, ...
(Date:7/29/2014)... , July 29, 2014 ... System (LBS) zur Erfassung biologischer Daten in ... entwickelt und patentiert. Das LBS nimmt gleichzeitig ... Koronararterie des Patienten und sucht erhöhte biologische ... das Potenzial, die Entdeckung und Entwicklung neuer ...
Breaking Biology Technology:Droidles, the Social Network of Robots and Open Source Platform for the Internet of Things, Launches for Crowd Funding on IndieGoGo.com 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 2In Vitro Fertilization (IVF) was the Subject of This Year’s Winning Entry for the Prestigious Library of Congress “Discovery or Exploration in History Award” 3Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 2Clinovo White Papers Published in Summer 2014 Editions of Leading Medical Device & Pharmaceutical Publications 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 2PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 3PlaqueTec sichert sich CE-Kennzeichnung für Liquid Biopsy System - bahnbrechende Innovation zur Erfassung neuer biologischer Informationen aus erkranktem Herzkranzgefäß 4
... Prepare for Zingo Launch ... Promoted To Senior Vice President, Marketing and Sales, and ... - Additional Manufacturing Capacity in China -, - Details to be Presented at Investor Briefing Today at ... Time -, ...
... TPPII may contribute to obesity by stimulating the formation of ... The enzyme, TPPII, has previously been linked to making people ... it may be even more deeply involved in causing obesity. ... of fat cells in worms and mammalian cells and that ...
... Ill. New sol-gel inks developed by researchers at ... to produce three-dimensional structures of metal oxides with nanoscale ... at the nanoscale opens a new avenue to functional ... gas sensors., The researchers describe the new inks in ...
Cached Biology Technology:Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 2Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 3Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 4Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 5Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 6Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 7Sol-gel inks produce complex shapes with nanoscale features 2
... Our Accumix standard is a new tuning ... electrospray ionization mass spectrometry. Accumix is ... mass range coverage for both tuning and ... and LTQ-MS) and Fourier transform mass spectrometers. ...
Determine relative degree of protein binding to phosphoinositides...
... Pipette is a synonym for pipetting accuracy, ... design, and superior operating comfort. Its single, ... measuring stroke and blow-out as well as ... ensures utmost accuracy and precision. Ejection sleeve ...
Goat polyclonal to STMN2 ( Abpromise for all tested applications). Antigen: Synthetic peptide: AKTAMAYKEK, corresponding to C terminal amino acids 2-11 of STMN2. Entrez Gene ID: 11075 Swi...
Biology Products: