Male superb lyrebirds mimic functionally distinct heterospecific vocalizations during different modes of sexual display
Male superb lyrebirds mimic functionally distinct heterospecific vocalizations during different modes of sexual display
复制标题
DOI：
10.1016/j.anbehav.2022.04.002
复制
发表时间：
2022-05-26
期刊：
影响因子：
2.5
通讯作者：
Magrath, Robert D.
中科院分区：
文献类型：
--
作者：
Dalziell, Anastasia H.;Welbergen, Justin A.;Magrath, Robert D.
模仿一直是研究的焦点，但很少有人知道如何以及为什么许多鸟类将模仿异种声音纳入其声音显示。理解拟声歌的关键是确定什么声音是模仿的，以及这种模仿是在什么背景下产生的。华丽的琴鸟，Menura novaehollanarus，是一种大型的鸣禽雀，具有类似lek的交配系统。两性都能准确而灵活地模仿其他物种的发声，但我们对雄性如何在不同的环境中运用它们的模仿声音知之甚少。使用扩展焦点手表，我们记录了成年男性显示在繁殖季节。我们发现，男性模仿异性的歌曲和非报警电话在“独奏”显示通常执行，而他们栖息和视觉上不显眼。相比之下，在视觉上显眼的“舞蹈”显示，通常在显示土丘上进行，男性只模仿异种报警电话。虽然舞蹈表演比独奏表演罕见得多，但舞蹈表演与交配前的最后阶段有关。这些结果提供了第一个证据，证明任何物种在不同的性环境中都会改变其模仿声音的剧目。先前的研究表明，舞蹈中的模仿显示出欺骗性的功能，以操纵雌性在求爱的最后阶段的反捕食反应。然而，背诵模仿的结构和背景非常类似于非模仿鸣禽表演的性广告歌曲。鉴于模仿的重要性，琴鸟的声学生态学，我们的研究结果表明，与独奏歌曲男性广告的质量，他们的模仿，因为它可能有利于男性和女性的后代。我们的发现，男性精湛的琴鸟模仿功能不同的异种发声在不同的模式的求爱表明，进化和维护的鸟类声乐表演比以前认为的更复杂。(c)2022动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Mimicry has long been a focus of research, but little is known about how and why many species of bird incorporate imitations of heterospecific sounds into their vocal displays. Crucial to understanding mimetic song is determining what sounds are mimicked and in what contexts such mimicry is produced. The superb lyrebird, Menura novaehollandiae, is a large oscine passerine with a lek-like mating system. Both sexes are accurate and versatile vocal mimics of the vocalizations of other species, but little is known about how males deploy their repertoire of mimicked sounds across contexts. Using extended focal watches, we recorded adult males displaying during the breeding season. We found that males mimicked heterospecific songs and nonalarm calls during 'recital' displays usually performed while they were perched and visually inconspicuous. In contrast, during visually conspicuous 'dance' displays, commonly performed on display mounds, males only mimicked heterospecific alarm calls. While much rarer than recital displays, dance displays were associated with the final stages of mate choice preceding copulation. These results provide the first evidence of any species varying its repertoire of mimicked sounds with different sexual contexts. Previous work suggests that mimicry in dance displays functions deceptively to manipulate the antipredator responses of females during the final stages of courtship. However, the structure and context of recital mimicry closely resembles the sexual advertisement song performed by nonmimicking songbirds. Given the importance of mimicry in the acoustic ecology of lyrebirds, our results suggest that with recital song males advertise the quality of their mimicry as it likely benefits both male and female offspring. Our finding that male superb lyrebirds mimic functionally distinct heterospecific vocalizations during different modes of courtship suggests that the evolution and maintenance of avian vocal displays are more complex than previously thought.(c) 2022 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.