Blocking of ultraviolet reflectance on bird eggs reduces nest predation by aerial predators

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• 作者：Canchao Yang ; Jiajia Wang ; Wei Liang
• 关键词：Artificial nest ; Aerial nest predators ; Cissa hypoleuca ; Garrulax pectoralis ; UV ; sensitive predator
• 刊名：Journal of Ornithology
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：157
• 期：1
• 页码：43-47
• 全文大小：906 KB
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• 作者单位：Canchao Yang (1)
  Jiajia Wang (1)
  Wei Liang (1)
  
  1. Ministry of Education Key Laboratory for Tropical Animal and Plant Ecology, College of Life Sciences, Hainan Normal University, Haikou, 571158, China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Zoology
  Animal Ecology
  Evolutionary Biology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：2193-7206

文摘

Visual sensitivity in ultraviolet (UV) light is widespread in the animal kingdom and occurs in all major taxonomic groups, including birds, which possess UV-sensitive photoreceptors and thus perceive UV light and use it in food selection, mate choice, offspring care and egg discrimination. However, no studies have been conducted to elucidate whether birds (aerial predators) could detect nests by UV light reflectance of eggs. In the present study, we performed artificial tree nest experiments in which pairs of pigeon eggs were treated with either a UV-blocker or a control substance before being exposed to nest predators in a tropical forest. The results showed that nest predation increased with duration of exposure, and that blocking UV reflectance of eggs could significantly reduce nest predation on tree nests. This provides experimental evidence for nest predation risk being linked to UV reflectance, and implies that aerial nest predators may detect nests by UV reflectance of eggs. Keywords Artificial nest Aerial nest predators Cissa hypoleuca Garrulax pectoralis UV-sensitive predator