@article{ref1,
title="Collective responses to heterospecifics emerge from individual differences in aggression",
journal="Behavioral ecology",
year="2019",
author="Neumann, Kevin M. and Pinter-Wollman, Noa",
volume="30",
number="3",
pages="801-808",
abstract="Variation in individual behavior among group members impacts collective outcomes. The ability of both individuals and groups to outcompete others can determine access to resources. The invasive Argentine ant, <i>Linepithema humile</i>, dominates resources and displaces native species. To determine how access to resources by groups of <i>L. humile</i> is impacted by their behavioral composition, we first determined that <i>L. humile</i> workers consistently vary in aggressive behavior. We then asked if variation in aggression within a group influences the group's ability to access a resource in the presence of cues of a native species, <i>Tapinoma sessile</i>. We found that the behavioral composition of <i>L. humile</i> groups impacted the groups' collective response to cues of <i>T. sessile.</i> Group behavior was the result of mostly additive, rather than synergistic, combinations of the behaviors of the group members. The behavior of groups that contained 50% highly aggressive and 50% low-aggression individuals was similar to the average of the behaviors of groups of all highly aggressive and groups of all low-aggression individuals. Uncovering the mechanisms that allow social invasive species to dominate the ecological communities they invade can inform the mitigation of invasion.<p /> <p>Language: en</p>",
language="en",
issn="1045-2249",
doi="10.1093/beheco/arz017",
url="http://dx.doi.org/10.1093/beheco/arz017"
}