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:11/3/2014)... 2014 Research and Markets has announced ... Technologies, Markets and Companies" to their offering. ... methods, which have already started to play an important role ... replacing the old fashioned bone marrow transplants. Role of cells ... to become a part of medical practice. Stem ...
(Date:11/3/2014)... that low birth weight and preterm birth are linked ... adulthood. Findings published in the American College of Rheumatology ... that low birth weight and pre-term babies were not ... as adults. , According to the ACR, 27 ... with clinical OA. Symptoms of OA range from mild ...
(Date:11/2/2014)... As a child, it was fascinating to put a ... shine through the hand. Washington University in St. Louis ... inside the body,s tissues to improve imaging of cancerous ... Wang, PhD, the Gene K. Beare Distinguished Professor of ... Science is applying a novel time-reversal technology that allows ...
Breaking Biology News(10 mins):Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3Preterm, low birth-weight babies may need new hips in adulthood 2Improving imaging of cancerous tissues by reversing time 2
(Date:11/27/2014)... First articles published now ... Elsevier , a world-leading provider of scientific, technical ... announce the launch of a new journal: ... The launch of Extreme Mechanics Letters is ... of applied sciences such as micro and nanotechnologies, biotechnologies, ...
(Date:11/26/2014)... 2014 Deep Research Report on ... in-depth research report on the Ammonium Bifluoride market, ... classification, application, and industry chain structure as well ... market analysis, including China’s domestic market as well ... China, Japan etc. regions) industry analysis covering macroeconomic ...
(Date:11/26/2014)... , Nov. 26, 2014 The ... from a survey of European physicians at the ... Innovation and Biological Therapies" at the Spanish Ministry ... hosted by EuropaBio and the Spanish Bioindustry Association ... Health, physicians from Spanish oncology and rheumatology societies, ...
(Date:11/26/2014)... SonaCare Medical, a leading manufacturer ... recently participated in the American Urology Association’s (AUA) ... Key opinion leaders in urology presented on the ... renal masses while attendees had the opportunity to ... hands-on labs. Attendees at the Los Angeles, CA ...
Breaking Biology Technology:Elsevier Announces the Launch of a New Journal: Extreme Mechanics Letters 2Elsevier Announces the Launch of a New Journal: Extreme Mechanics Letters 3Ammonium Bifluoride Market International Analysis of Manufacturing, Technology & Trends Now at ReportsnReports.com 2Ammonium Bifluoride Market International Analysis of Manufacturing, Technology & Trends Now at ReportsnReports.com 3ASBM Presents European Physicians Survey at Spanish Ministry of Health 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 3
Cached News: