The control of nest climate in bumblebee (Bombus terrestris) colonies: interindividual variability and self reinforcement in fanning response
The control of nest climate in bumblebee (Bombus terrestris) colonies: interindividual variability and self reinforcement in fanning response
复制标题
熊蜂（Bombus terrestris）群体巢穴气候的控制：扇动反应中的个体差异和自我强化
DOI：
10.1093/beheco/arg101
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发表时间：
2004
影响因子：
2.4
通讯作者：
A. Weidenmüller
中科院分区：
文献类型：
--
作者：
A. Weidenmüller
社会性昆虫对环境刺激的个体间变异性对群体行为有重要影响。本研究提出了一个详细的调查的变化，在个人扇行为背后的集体控制巢气候大黄蜂（熊蜂terrestris）殖民地。四个菌落反复暴露于不断升高的温度和CO2水平。确定每个工人的反应阈值（定义为工人通过扇风反应的平均刺激强度）。对118名工人的温度反应阈和88名工人的CO2反应阈进行了分析。工人的反应阈值不同。一些人对低刺激强度一直有反应，另一些人对高刺激强度一直有反应。没有一致的温度和CO2阈值之间的相关性被发现在个人。在连续的试验中，蜜蜂的反应阈值降低，为通过个体阈值强化的专业化思想提供了经验支持。除了个体反应阈值的变异性外，一个群体的工人在其他两个反应参数上也不同：反应概率（一旦超过个体的反应阈值，对刺激做出反应的概率）和反应持续时间（一旦个体做出反应，就进行扇风的持续时间）。本研究结果表明，响应阈值，响应概率和响应持续时间是重要的独立参数的个体反应性的集体控制巢气候的熊蜂群体。关键词：分工、巢气候、强化、反应阈值、自组织。[Behav Ecol 15：120-128（2004）]
Interindividual variability in response to environmental stimuli is believed to have a major impact on collective behaviors in social insects. The present study presents a detailed investigation of the variability in individual fanning behavior underlying the collective control of nest climate in bumblebee (Bombus terrestris) colonies. Four colonies were repeatedly exposed to increasing temperature and CO2 levels. The response threshold of each worker (defined as the mean stimulus intensity at which a worker responded by fanning) was determined. Temperature response thresholds of 118 workers and CO2 response thresholds of 88 workers were analyzed. Workers differed in their response thresholds. Some consistently responded to low stimulus intensities, others consistently responded to high stimulus intensities. No consistent correlation between temperature and CO2 thresholds was found within individuals. Response thresholds of fanning bees decreased over successive trials, providing empirical support for the idea of specialization through individual threshold reinforcement. In addition to variability in individual response thresholds, workers of a colony differed in two other parameters of responsiveness: response probability (the probability of responding to a stimulus once it exceeded an individual’s response threshold) and response duration (the persistency with which fanning was performed once an individual responded). The results of the present study suggest that response threshold, response probability and response duration are important independent parameters of individual responsiveness in the collective control of nest climate in bumblebee colonies. Key words: division of labor, nest climate, reinforcement, response thresholds, selforganization. [Behav Ecol 15:120–128 (2004)]