Differences in the sleep architecture of forager and young honeybees (Apis mellifera)
Differences in the sleep architecture of forager and young honeybees (Apis mellifera)
复制标题
DOI：
10.1242/jeb.016915
复制
发表时间：
2008-08-01
影响因子：
2.8
通讯作者：
Bloch, Guy
中科院分区：
文献类型：
--
作者：
Eban-Rothschild, Ada D.;Bloch, Guy
蜜蜂（Apis mellifera）觅食者是最早描述睡眠行为的无脊椎动物之一。觅食动物（通常超过21天）有很强的昼夜节律;它们白天活跃，晚上睡觉。我们探讨了年轻的蜜蜂（类似于3天的年龄），这是典型的活跃的昼夜节律，没有昼夜节律，也表现出睡眠行为。我们结合了24小时的视频记录，详细的行为观察，并分析了在各种唤醒状态下单独圈养的蜜蜂对光脉冲的反应阈值。我们的特点是三个睡眠阶段觅食的基础上，身体姿势，回合持续时间，触角运动和反应阈值的差异。年轻的蜜蜂表现出睡眠行为，包括相同的三个阶段，观察觅食。睡眠被短暂的醒来打断，这在年轻的蜜蜂中和觅食者一样频繁。除了这些相似之处，我们还发现了年轻蜜蜂和觅食者睡眠结构的差异。年轻的蜜蜂更频繁地在三个睡眠阶段之间转换，并且在最浅的睡眠阶段停留的时间比觅食者更长。睡眠结构的这些差异可能代表发育和/或环境诱导的变化，在神经网络的睡眠蜜蜂。据我们所知，这是昆虫睡眠行为可塑性的第一个证据。
Honeybee (Apis mellifera) foragers are among the first invertebrates for which sleep behavior has been described. Foragers (typically older than 21 days) have strong circadian rhythms; they are active during the day, and sleep during the night. We explored whether young bees (similar to 3 days of age), which are typically active around-the-clock with no circadian rhythms, also exhibit sleep behavior. We combined 24-hour video recordings, detailed behavioral observations, and analyses of response thresholds to a light pulse for individually housed bees in various arousal states. We characterized three sleep stages in foragers on the basis of differences in body posture, bout duration, antennae movements and response threshold. Young bees exhibited sleep behavior consisting of the same three stages as observed in foragers. Sleep was interrupted by brief awakenings, which were as frequent in young bees as in foragers. Beyond these similarities, we found differences in the sleep architecture of young bees and foragers. Young bees passed more frequently between the three sleep stages, and stayed longer in the lightest sleep stage than foragers. These differences in sleep architecture may represent developmental and/or environmentally induced variations in the neuronal network underlying sleep in honeybees. To the best of our knowledge, this is the first evidence for plasticity in sleep behavior in insects.