Does experimentally simulated presence of a common cuckoo (Cuculus canorus) affect egg rejection and breeding success in the red-backed shrike (Lanius collurio)?

IF 1.1 4区 生物学 Q4 BEHAVIORAL SCIENCES
Piotr Tryjanowski, Artur Golawski, Mariusz Janowski, Tim H. Sparks
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引用次数: 2

Abstract

Providing artificial eggs is a commonly used technique to understand brood parasitism, mainly by the common cuckoo (Cuculus canorus). However, the presence of a cuckoo egg in the host nest would also require an earlier physical presence of the common cuckoo within the host territory. During our study of the red-backed shrike (Lanius collurio), we tested two experimental approaches: (1) providing an artificial “cuckoo” egg in shrike nests and (2) additionally placing a stuffed common cuckoo with a male call close to the shrike nest. We expected that the shrikes subject to the additional common cuckoo call stimuli would be more sensitive to brood parasitism and demonstrate a higher egg rejection rate. In the years 2017–2018,  in two locations in Poland, a total of 130 red-backed shrike nests were divided into two categories: in 66 we added only an artificial egg, and in the remaining 64 we added not only the egg, but also presented a stuffed, calling common cuckoo. Shrikes reacted more strongly if the stuffed common cuckoo was present. However, only 13 incidences of egg acceptance were noted, with no significant differences between the locations, experimental treatments or their interaction. Analysis of breeding success revealed significant differences between the locations, between experimental treatments and their interaction, which suggests a strong location effect. The red-backed shrike is an efficient rejector of foreign eggs. It would be interesting to see how similar tests affect hosts that have much higher rates of brood parasitism and egg acceptance.

实验模拟普通布谷鸟(Cuculus canorus)的存在是否会影响红背伯劳鸟(Lanius collurio)的卵子排斥和繁殖成功?
提供人工卵是一种常用的技术来了解幼虫寄生,主要是普通杜鹃(Cuculus canorus)。然而,在寄主巢中出现杜鹃蛋也需要在寄主领地内更早地出现普通杜鹃。在对红背伯劳鸟(Lanius collurio)的研究中,我们测试了两种实验方法:(1)在伯劳巢中提供人工“杜鹃”蛋;(2)在伯劳巢附近放置一个普通布谷鸟标本,并发出雄性叫声。结果表明,在布谷鸟叫声的刺激下,伯劳鸟对幼虫寄生的反应更敏感,排斥率更高。在2017-2018年,在波兰的两个地点,共有130个红背伯劳巢被分为两类:在66个我们只添加了一个人造蛋,在剩下的64个我们不仅添加了蛋,还提供了一个填充的,叫普通杜鹃。如果布谷鸟标本在场,伯劳鸟的反应会更强烈。然而,只有13个卵子被接受的发生率被注意到,在地点、实验处理或它们的相互作用之间没有显著差异。育种成功率分析显示,不同地点、不同处理间及其相互作用之间存在显著差异,表明存在较强的位置效应。红背伯劳鸟能有效地排斥外来的蛋。看看类似的测试如何影响那些有更高的幼虫寄生率和卵子接受率的宿主,这将是一件有趣的事情。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
acta ethologica
acta ethologica 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals. The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics. acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)
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