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王龙舞, 钟国, 何刚彬, 张瑜晗, 梁伟. 2020: 大杜鹃的产卵行为:基于视频监控数据的分析. 动物学研究, 41(4): 458-464. DOI: 10.24272/j.issn.2095-8137.2020.021
引用本文: 王龙舞, 钟国, 何刚彬, 张瑜晗, 梁伟. 2020: 大杜鹃的产卵行为:基于视频监控数据的分析. 动物学研究, 41(4): 458-464. DOI: 10.24272/j.issn.2095-8137.2020.021
Long-Wu Wang, Guo Zhong, Gang-Bin He, Yu-Han Zhang, Wei Liang. 2020: Egg laying behavior of common cuckoos (Cuculus canorus): Data based on field video-recordings. Zoological Research, 41(4): 458-464. DOI: 10.24272/j.issn.2095-8137.2020.021
Citation: Long-Wu Wang, Guo Zhong, Gang-Bin He, Yu-Han Zhang, Wei Liang. 2020: Egg laying behavior of common cuckoos (Cuculus canorus): Data based on field video-recordings. Zoological Research, 41(4): 458-464. DOI: 10.24272/j.issn.2095-8137.2020.021

大杜鹃的产卵行为:基于视频监控数据的分析

Egg laying behavior of common cuckoos (Cuculus canorus): Data based on field video-recordings

  • 摘要: 巢寄生的鸟类自身不营巢,而是把自己的卵产于其他鸟类(宿主)的巢中,让宿主代为孵卵和育雏。因此,研究巢寄生的鸟类如何把卵产到宿主的巢中,对于理解两者的协同进化具有重要意义。我们在野外7年的研究中,监测了产卵期的455巢东方大苇莺(Acrocephalus orientalis),其中250巢被大杜鹃(Cuculus canorus)寄生。对其中53个清晰的大杜鹃产卵视频进行了分析,发现大杜鹃在全天的产卵时间分布为09:11 am至19:25 pm。杜鹃在产卵的过程中都是把头埋在巢底,而且眼睛都是睁开的,这与之前预期的产卵瞬间会因为用力而紧闭双眼,或者躲避宿主攻击眼睛等原因而闭眼不同。杜鹃在产卵的过程中,有时会叼走宿主的1–2枚卵,有时则不叼卵。针对大杜鹃的叼卵行为,我们提出一个新的助产假说,即,产卵时大杜鹃需要咬住卵有助于更快速地产卵,以避免引起宿主的注意或者减少宿主的攻击,而叼走宿主的卵只是咬卵行为的“副产品”。总的来说,杜鹃根本不在乎宿主是否在巢边,它们自有一套对付宿主攻击的办法,不管任何时候,它们都可以大胆而顺利地完成寄生产卵。

     

    Abstract: The egg laying behavior of brood parasites is at the heart of studies on host co-evolution. Therefore, research on egg laying behavior can improve our understanding of brood parasitism and associated processes. Over a seven year study period, we monitored 455 oriental reed warbler (Acrocephalus orientalis) nests during the egg laying period, 250 of which were parasitized by common cuckoos (Cuculus canorus). We collected 53 clear videos of common cuckoo parasitism, analyzed all recorded parasitic behavior in detail, and summarized the process of brood parasitism. Furthermore, based on analyses of the field video recordings, we propose a new explanation for egg removal behavior, namely the delivery hypothesis, i.e., egg pecking and biting by cuckoos may facilitate fast egg-laying and parasitism by reducing host attention and attack, with egg removal a side effect of egg pecking and biting. We concluded that common cuckoos change their behavior when hosts are present at the nest, with a set of behaviors performed to deal with host attack and successfully complete parasitic egg-laying regardless of time of day.

     

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