首页|Parent-offspring and inter-offspring responses to conspecific versus heterospecific distress calls in 2 sympatric birds

Parent-offspring and inter-offspring responses to conspecific versus heterospecific distress calls in 2 sympatric birds

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Distress calls,as a type of alarm call,play important roles in expressing bodily condition and convey-ing information concerning predation threats.In this study,we examined the communication via dis-tress calls in parent-offspring and inter-offspring interactions.First,we used playback of chick dis-tress calls of 2 sympatric breeders,the vinous-throated parrotbill Sinosuthora webbiana and the oriental reed warbler Acrocephalus orientalis,to the adults/chicks of these 2 species,respectively,and measured the responses of conspecifics or heterospecifics.The playback-to-chicks experiment showed that both species ofchicks reduced the number of begging calls and begging duration time as a response to conspecific/heterospecific distress calls compared with natural begging and back-ground noise controls.However,reed warbler chicks also reduced beak opening frequency in the re-sponse to conspecific distress calls compared with other playback stimuli.Second,the results of the playback-to-adults experiment showed that reed warbler adults could eavesdrop on distress calls of conspecific neighbors and sympatric heterospecifics.Furthermore,the nest-leaving behavior of reed warblers did not differ significantly when they heard the distress calls of conspecifics or parrotbills.Finally,reed warbler adults responded to heterospecific distress calls more quickly than to conspecif-ic distress calls,and parrotbill adults presented the same response.Our results supported the warn-kin hypothesis and show that chick distress calls play an important role in conveying risk and the con-dition of chicks to enhance individual fitness.In addition,we also found that eavesdropping on dis-tress calls is a congenital behavior that begins in the chick stage.

acoustic communicationcall recognitionchick-chick systemeavesdroppingparent-offspring system

Yuxin JIANG、Jingru HAN、Ziqi ZHANG、Xiangyang CHEN、Canchao YANG

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Ministry of Education Key Laboratory for Ecology of Tropical Islands,College of Life Sciences,Hainan Normal University,Haikou 571158,China

Hainan Provincial Natural Science Foundation of ChinaHainan Provincial Natural Science Foundation of ChinaNational Natural Science Foundation of China

320CXTD4372019RC18931672303

2022

动物学报(英文版)
中国科学院动物研究所,中国动物学会

动物学报(英文版)

CSCDSCI
影响因子：0.198
ISSN：1674-5507
年,卷(期)：2022.68(6)
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