Moonlight intensity influences the activity patterns of bats. Some bat species reduce their activity levels during brighter nights, a phenomenon known as “lunar phobia.” While lunar phobia of bats has been extensively studied in tropical regions, the same is not the case of bats in temperate regions. By using acoustic detectors, we examined differences in the activity of insectivorous bats on nights with different moonlight intensity in an agricultural landscape of central Chile. We also examined the hourly activity patterns throughout the night and how these varied between full and new moon nights. All bat species modified their activity based on the moonlight intensity; however, their effects were species-specific. The activity of Lasiurus varius, L. villosissimus, Myotis chiloensis, and Histiotus montanus was lower during bright nights, while Tadarida brasiliensis was the only species whose activity was higher during bright nights. Hourly activity throughout the night differed between full moon nights and new moon nights in most bat species. During full moon, bats concentrated their activities in the early hours of the nights; a more homogeneous activity pattern was exhibited during new moon night. Our study demonstrates that moonlight affects the activity of bats in Chile, a factor that should be considered when studying bats.

中文翻译：

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月光对智利中部食虫蝙蝠活动的物种特异性影响

月光强度影响蝙蝠的活动模式。一些蝙蝠物种在明亮的夜晚会降低活动水平，这种现象被称为“月球恐惧症”。虽然在热带地区对蝙蝠的月球恐惧症进行了广泛的研究，但温带地区的蝙蝠却并非如此。通过使用声学探测器，我们研究了智利中部农业景观中不同月光强度夜间食虫蝙蝠活动的差异。我们还检查了整晚每小时的活动模式，以及这些活动在满月夜和新月夜之间的变化情况。所有蝙蝠物种都根据月光强度改变了它们的活动；然而，它们的影响是物种特异性的。Lasiurus varius、L. villosissimus、Myotis chiloensis 和 Histiotus montanus 在明亮的夜晚活动较低，而 Tadarida brasiliensis 是唯一在明亮的夜晚活动量较高的物种。大多数蝙蝠物种在满月之夜和新月之夜之间整夜每小时的活动有所不同。在满月期间，蝙蝠在深夜集中活动；在新月之夜表现出更均匀的活动模式。我们的研究表明，月光会影响智利蝙蝠的活动，这是研究蝙蝠时应考虑的一个因素。在新月之夜表现出更均匀的活动模式。我们的研究表明，月光会影响智利蝙蝠的活动，这是研究蝙蝠时应考虑的一个因素。在新月之夜表现出更均匀的活动模式。我们的研究表明，月光会影响智利蝙蝠的活动，这是研究蝙蝠时应考虑的一个因素。