HOME >> BIOLOGY >> NEWS
Scientists question reports of massive ant supercolonies in California and Europe

g the Mediterranean coast - a distance of about 3,500 miles. Unlike the UCSD researchers, the European team found a great deal of microsatellite diversity in the Mediterranean supercolony but also observed very little aggression among nests. How did they explain this?

"The argument by the European group ran like this," Gordon said. "The reason ants in the Mediterranean don't fight is that, although they are genetically diverse, they have lost the diversity in the genes that are involved in recognition and thus don't recognize each other as different. This runs counter to the argument made by the UCSD lab - that California ants don't fight because they're related and therefore don't recognize each other as different."

The European and UCSD groups did agree on one point: The lack of aggression within the supercolony is the main reason Argentine ants have been more successful in the Mediterranean and California than in their native Argentina, where frequent territorial battles have kept the population in check.

But Gordon and her colleagues have found evidence contradicting that neat explanation. Heller, for example, has documented instances of both cooperation and combat among colonies in California. And in Argentina - where fighting prevails, according to the UCSD group - Heller observed widespread cooperation among densely populated colonies. Her findings raised questions about the hypothesis that aggressive ants have managed to keep Argentina's native population in check.

"So it's not simply a matter of native-versus-introduced or genetic diversity," Ingram said. "There are also ecological factors contributing to the ants' success."

Gordon agreed, pointing to an experiment by North Carolina State University in which researchers were able to turn nonaggressive nestmates into combatants simply by changing their diet.

"It seems really clear that aggression in Argentine ants, a
'"/>

Contact: Dawn Levy
dawnlevy@stanford.edu
650-725-1944
Stanford University
7-Apr-2004


Page: 1 2 3 4 5 6 7

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
(Date:12/22/2014)... SHELTON, Conn. , Dec. 22, 2014  NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile commerce ... consultant, Apollo Robbins for the 2015 International CES ... Apollo Robbins will be at the NXT-ID booth ...
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ( ... Market Monitor: North America Perimeter Security Systems Market" report ... The North American perimeter security market is estimated ... 2019. Although the U.S. market holds a larger share in ...
(Date:12/17/2014)... , Dec. 15, 2014 The Defense Logistics Agency ... detect and prevent counterfeit microcircuits from entering into its ... an in-house microcircuit anti-counterfeit initiative dubbed DNA marking. The ... increasing their reliability throughout the supply chain. The new ...
Breaking Biology News(10 mins):NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 2Defense Logistics Agency Launches DNA Marking Capability to Strengthen Microcircuit Supply Chain 3
(Date:1/22/2015)... 22, 2015  Transwestern | RBJ today announces the firm brokered ... for Shire a leading biopharmaceutical company, at Two Ledgemont Center ... Robert Richards , president, and Brian Cohen , ... entire five-floor building at 95 Hayden Ave. Photo ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Protocol Networks ... The growing team of brand-neutral, independent consultants, Protocol Networks ... Rogers explained that over the years, his company has ... Moroso, Town of Plainfield, as well as others. With ...
(Date:1/22/2015)... DE (PRWEB) January 22, 2015 Controlled ... Pistoia Alliance, which helps companies check the legal requirements ... to expand to China. , As their international ... are globally adopting software solutions built as a result ...
(Date:1/22/2015)...  Varian Medical Systems (NYSE: VAR ), world leader ... commitment to sustainability with inclusion on a prestigious list of ... healthcare equipment company among the Corporate Knights Global 100 Most ... at Davos, Switzerland . ...
Breaking Biology Technology:Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2Global Compliance Service for Controlled Substances to Expand to China 2Varian Honored Among World's 100 Most Sustainable Corporations 2
Cached News: