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:
*Name:
*Comment:
*Email:


(Date:1/11/2017)... , Jan. 11, 2017  Michael Johnson, co-founder of Visikol ... Capital Group, Inc., has been named to the elite "Forbes 30 ...  was one of 600 people in 20 fields nationwide to be ... of the 15,000 applicants were selected. ... He is currently a PhD candidate at Rutgers ...
(Date:1/4/2017)... Jan. 4, 2017  CES 2017 – Valencell ... technology, today announced the launch of two new ... the highly-accurate biometric sensor modules that incorporate the ... experience and expertise. The two new designs include ... for hearables, and Benchmark BW2.0, a 2-LED version ...
(Date:12/20/2016)... Dec, 20, 2016   Valencell , the ... and STMicroelectronics (NYSE: STM), a global semiconductor ... applications, announced today the launch of a new, ... wearables that includes ST,s compact SensorTile ... biometric sensor system. Together, SensorTile and Benchmark ...
Breaking Biology News(10 mins):
(Date:1/21/2017)... CA (PRWEB) , ... January 21, 2017 , ... ... our ongoing endeavors to bring to market a pioneering medical device for the ... has signed an engagement contract with Emergo, a global regulatory consultancy that helps ...
(Date:1/21/2017)... , Jan. 20, 2017 Aratana Therapeutics, Inc. ... focused on the licensing, development and commercialization of innovative ... Best Company in North America ... the award based on the FDA approval of ... tablets), ENTYCE ® (capromorelin oral solution) and NOCITA ...
(Date:1/20/2017)... YORK , January 20, 2017 ... current market conditions have influenced the most recent performances ... Therapeutics Inc. (NASDAQ: RGLS ), Abeona Therapeutics ... (NASDAQ: TBPH ), and Sage Therapeutics Inc. ... research report by Grand View Research, global Biotech market size is ...
(Date:1/20/2017)... ... January 20, 2017 , ... ... (LES®) Technologies, announced today the next evolution in spinal fusion, the MISquito ... In contrast to the competition, SpineFrontier is focused on technique driven product ...
Breaking Biology Technology:
Cached News: