Nonequilibrium dynamics of social groups: insights from foraging Argentine ants
Nonequilibrium dynamics of social groups: insights from foraging Argentine ants
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DOI：
10.1007/s00040-003-0725-x
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发表时间：
2004-08-01
期刊：
影响因子：
1.3
通讯作者：
Burd, M
中科院分区：
文献类型：
--
作者：
Halley, JD;Burd, M
我们研究了干扰模式组的喂养阿根廷蚂蚁，Linepithema humile。所有的干扰都是由蚂蚁自己造成的，没有施加外源干扰。整体模式，其中包括一个幂律分布的干扰雪崩的大小，其中每一个都是由一个单一的流浪蚂蚁发起的，是类似的自组织临界系统的模式特性。此外，我们观察到个体之间的变化，根据他们的饱足程度的干扰。与膨胀的胃气（指示量的食物摄取）恢复喂养速度比他们更薄的同行，更有可能完全离开食物来源。虽然这些干扰减少了食物收集，因为喂养蚂蚁被中断，他们是最小的，并可能使蚂蚁群体集体平衡的优势，快速报警通信中断觅食从琐碎的干扰的成本。
We studied disturbance patterns in groups of feeding Argentine ants, Linepithema humile. All disturbances were caused by the ants themselves, without application of exogenous disturbances. The overall pattern, which consisted of a power law distribution of disturbance avalanche sizes, each of which was initiated by a single wandering ant, is similar to patterns characteristic of self-organized critical systems. In addition, we observed variation among individuals in response to disturbance according to their level of satiation. Ants with distended gasters (indicative of volume of food uptake) resumed feeding less rapidly than their thinner counterparts, and were more likely to leave food sources altogether. Although these disturbances reduce food collection because feeding ants are interrupted, they are minimal and may enable ant groups to balance collectively the advantage of rapid alarm communication with the costs of interrupted foraging from trivial disturbances.