
Herv Rosset · Laurent Keller · Michel Chapuisat ...
on shortterm task efficiency in the Argentine ant Linepithema humile Received: 1 June 2004 / Revised: 1 November 2004 / Accepted: 23 November 2004 / Published online: 20 January 2005 SpringerVerlag 2005 Abstract Genetic diversity might increase the performance of social groups by improving task efficiency or disease resistance, but direct experimental tests of these .