Effects of experimental forager removals on division of labour in the primitively eusocial wasp Polistes instabilis (Hymenoptera: Vespidae)
Effects of experimental forager removals on division of labour in the primitively eusocial wasp Polistes instabilis (Hymenoptera: Vespidae)
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DOI：
10.1163/156853998793066348
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发表时间：
1998-03-01
期刊：
影响因子：
1.3
通讯作者：
O'Donnell, S
中科院分区：
文献类型：
--
作者：
O'Donnell, S
实验觅食清除进行评估的机制，Polistes不稳定的殖民地调节其摄入的花蜜和水。大多数觅食蜂采集花蜜，而水则由少数固定觅食蜂采集。去除最活跃的水觅食导致水觅食减少，其次是招聘一个单一的替代水觅食。替代水觅食者通常是从以前以低速率收集水的工人中招募的。水觅食的清除表明，一些工人专门收集水，但这些工人在他们的阈值不同的反应需要巢冷却殖民地。移除最活跃的花蜜觅食导致更持久（一到三天）的殖民地花蜜收集率下降，并导致更换花蜜觅食被招募远离其他觅食任务或从巢任务。花蜜觅食者清除率增加巢蜂之间的优势相互作用，这种反应没有观察到水觅食者清除后。工蜂之间的优势相互作用似乎可以调节Ii instabilis的花蜜觅食。觅食的调节机制因材料而异，并对应于它们的最大收集率、资源的可预测性以及对殖民地供应的短期变化的成本。
Experimental forager removals were performed to assess the mechanisms by which Polistes instabilis colonies regulate their intake of nectar and water. Most foragers gathered nectar, while water was collected by a small number of fixated foragers. Removal of the most active water foragers led to decreases in water foraging, followed by recruitment of a single replacement water forager. Replacement water foragers were usually recruited from among the workers that had previously collected water at low rates. Water forager removals showed that some workers specialized on water collection, but these workers differed in their thresholds of response to colony need for nest cooling. Removal of the most active nectar foragers led to longer-lasting (one to three days) decreases in colony nectar collection rates, and resulted in replacement nectar foragers being recruited away from other foraging tasks or from nest tasks. Nectar forager removals were followed by increases in rates of dominance interactions among nest wasps; this response was not observed after water forager removals. Dominance interactions among workers appear to regulate nectar foraging in Ii instabilis. The mechanisms of regulation of foraging differ among materials, and correspond to their maximum rates of collection, predictability of resources, and on the costs of short-term changes in supply to the colony.