Effect of light intensity on food detection in captive great fruit-eating bats, Artibeus lituratus (Chiroptera: Phyllostomidae)
Effect of light intensity on food detection in captive great fruit-eating bats, Artibeus lituratus (Chiroptera: Phyllostomidae)
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DOI：
10.1016/j.beproc.2014.08.003
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发表时间：
2014-11-01
影响因子：
1.3
通讯作者：
Pessoa, Daniel M. A.
中科院分区：
文献类型：
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作者：
Gutierrez, Eduardo de A.;Pessoa, Valdir F.;Pessoa, Daniel M. A.
蝙蝠以其发达的回声定位而闻名。然而，几项针对蝙蝠视觉系统的实验表明，在特定亮度下，视觉线索对蝙蝠生物学的不同方面（包括觅食行为）都很重要。研究了五种雌性大食果蝙蝠在不同光照强度下的觅食能力。研究人员给动物们布置了一系列的任务，测试它们在不吃的背景下对食物目标的辨别能力，在类似黄昏照明（18 lx）、满月照明（2 lx）和完全黑暗（0 lx）的光线水平下。我们发现蝙蝠在类似黄昏的光强度下需要更长的时间来检测目标，可能是由于在更强的光水平下存在抑制效应。此外，蝙蝠在类似满月亮度的光线条件下更有效地探测和捕捉目标，这表明视觉线索对目标识别很重要。这些结果表明，光强度影响觅食行为，并使食果蝙蝠能够使用视觉线索来检测食物。本文为特刊《新热带行为》的一部分。(C) 2014 Elsevier B.V.版权所有
Bats are known for their well-developed echolocation. However, several experiments focused on the bat visual system have shown evidence of the importance of visual cues under specific luminosity for different aspects of bat biology, including foraging behavior. This study examined the foraging abilities of five female great fruit-eating bats, Artibeus lituratus, under different light intensities. Animals were given a series of tasks to test for discrimination between a food target against an inedible background, under light levels similar to the twilight illumination (18 lx), the full moon (2 lx) and complete darkness (0 lx). We found that the bats required a longer time frame to detect targets under a light intensity similar to twilight, possibly due to inhibitory effects present under a more intense light level. Additionally, bats were more efficient at detecting and capturing targets under light conditions similar to the luminosity of a full moon, suggesting that visual cues were important for target discrimination. These results demonstrate that light intensity affects foraging behavior and enables the use of visual cues for food detection in frugivorous bats.This article is part of a Special Issue entitled: Neotropical Behaviour. (C) 2014 Elsevier B.V. All rights reserved.