The Role of Colony Temperature in the Entrainment of Circadian Rhythms of Honey Bee Foragers
The Role of Colony Temperature in the Entrainment of Circadian Rhythms of Honey Bee Foragers
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DOI：
10.1093/aesa/saab021
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发表时间：
2021-05-26
影响因子：
2.3
通讯作者：
Agosto-Rivera, Jose L.
中科院分区：
文献类型：
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作者：
Giannoni-Guzman, Manuel A.;Rivera-Rodriguez, Emmanuel J.;Agosto-Rivera, Jose L.
蜜蜂利用昼夜节律来准确预测一天中的时间。这种能力使觅食者能够在几天内记住食物供应的具体时间及其位置。先前的研究提供了强有力的证据，证明光/暗周期是蜜蜂的主要时间。我们实验室的工作描述了来自同一蜂群的蜜蜂觅食者的内源周期长度存在很大的个体差异，以及不同恒温下内源节律的差异。在这项研究中，我们通过检查蜂群内部的温度来进一步开展这项工作。通过将温度和光数据记录器放置在群体内的不同位置，我们测量了群体内不同位置的温度。我们观察到蜂巢内温度的显着波动，显示出季节性模式。然后，我们在实验室中模拟了观察到的温度振荡，发现使用温度周期作为时间，觅食者在温度运动节律的阶段中存在很大的个体差异。此外，觅食者成功地将其运动节律与这些模拟的温度循环同步。将周期提前六个小时，导致检测中一些觅食者的活动阶段发生变化。本研究显示的结果强调了温度作为该领域潜在时间的重要性。未来的研究将探讨观察到的昼夜节律相位差可能的功能和进化作用。
Honey bees utilize their circadian rhythms to accurately predict the time of day. This ability allows foragers to remember the specific timing of food availability and its location for several days. Previous studies have provided strong evidence toward light/dark cycles being the primary Zeitgeber for honey bees. Work in our laboratory described large individual variation in the endogenous period length of honey bee foragers from the same colony and differences in the endogenous rhythms under different constant temperatures. In this study, we further this work by examining the temperature inside the honey bee colony. By placing temperature and light data loggers at different locations inside the colony we measured temperature at various locations within the colony. We observed significant oscillations of the temperature inside the hive, that show seasonal patterns. We then simulated the observed temperature oscillations in the laboratory and found that using the temperature cycle as a Zeitgeber, foragers present large individual differences in the phase of locomotor rhythms for temperature. Moreover, foragers successfully synchronize their locomotor rhythms to these simulated temperature cycles. Advancing the cycle by six hours, resulting in changes in the phase of activity in some foragers in the assay. The results are shown in this study highlight the importance of temperature as a potential Zeitgeber in the field. Future studies will examine the possible functional and evolutionary role of the observed phase differences of circadian rhythms.