BOUNDARY DISPUTES IN THE TERRITORIAL ANT AZTECA-TRIGONA - EFFECTS OF ASYMMETRIES IN COLONY SIZE
BOUNDARY DISPUTES IN THE TERRITORIAL ANT AZTECA-TRIGONA - EFFECTS OF ASYMMETRIES IN COLONY SIZE
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DOI：
10.1016/s0003-3472(05)80877-2
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发表时间：
1990-02-01
期刊：
影响因子：
2.5
通讯作者：
ADAMS, ES
中科院分区：
文献类型：
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作者：
ADAMS, ES
树栖蚂蚁Azteca triona的邻近群体建立了不同的领土边界，不平等地划分了觅食空间。本文介绍了一系列野外实验，旨在揭示在不同工蚁群体之间的竞争中，边界是如何建立的，空间是如何划分的。在领土边缘上演的战斗中，来自本地工蚁密度较大的蚁群的蚂蚁更有可能招募筑巢伙伴，也更有可能保持对竞争地区的控制。攻击或撤退的决定取决于鸟巢伴侣和入侵者的相对数量。对通往诱饵平台的桥梁进行的实验操作表明，由于第一批蚂蚁发现新区域的强劲招募，以前的所有者更有可能赢得比赛。在更大的范围内，当蜂群强度因拆除巢和使用杀虫剂而降低时，弱化的蜂群比大小匹配的对照组失去了更多的领土给它们的邻居。这些结果表明，边界争端的结果取决于相邻居民之间的力量不对称。
Neighbouring colonies of the arboreal ant Azteca trigona estabilish distinct territory boundaries that unequally partition foraging space. This paper presents a series of field experiments designed to reveal how boundaries are established and how space is divided during contests between colonies that differ in worker population. In battles staged at territory edges, ants from the colony with the greater local density of workers were more likely to recruit nestmates and were more likely to retain control of the contested area. The decision to attack or to withdraw depended upon the relative number of nestmates and intruders. Experimental manipulation of bridges leading to baited platforms showed that prior owners were more likely to win contests, due to strong recruitment by the first ants to discover new regions. On a larger scale, when colony strength was lowered by removal of nests and by application of pesticides, weakened colonies lost more territory to their neighbours than did size-matched controls. These results show that the outcome of boundary disputes depends upon asymmetries in strength between adjacent residents.