Banded mongoose recruitment calls convey information about risk and not stimulus type
Banded mongoose recruitment calls convey information about risk and not stimulus type
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DOI：
10.1016/j.anbehav.2009.05.002
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发表时间：
2009-07-01
期刊：
影响因子：
2.5
通讯作者：
Manser, Marta B.
中科院分区：
文献类型：
--
作者：
Furrer, Roman D.;Manser, Marta B.
许多物种使用特定的发声来吸引同种动物到食物来源，或招募其他群体成员来检查二级捕食者线索或群殴捕食者。然而，人们对这种叫声的声学结构的变化及其相关含义知之甚少。在合作繁殖的带状猫鼬（Mungos mungo）中，我们研究了在群体招募的情况下对三种不同刺激类型产生的叫声：（1）次要捕食者线索； （2）蛇； (3) 竞争团体的成员。捕食者粪便发出的叫声与蛇和竞争对手群体发出的更严厉的叫声不同，但后两者发出的叫声类似。针对不同的刺激类别，只产生了一些中间声学结构的呼叫。不同刺激引起的呼叫的回放导致个体以相同的方式接近说话者。然而，与粪便引起的叫声相比，由蛇和竞争对手猫鼬专门引起的叫声导致接收器响应的比例更高，并且接收器响应更快。这表明采用的是分级招聘系统，而不是离散的招聘系统。因此，尽管刺激类型和招募目的存在明显差异，但呼叫的声学结构传达了有关所遇到刺激的风险的信息，而不是刺激类型本身，从而允许接收者根据紧急程度调整其反应。由于在所有群体成员都聚集在呼叫者周围后，呼叫会持续很长时间，因此这些呼叫也可能起到威慑对手并协调随后的群体反应的作用。 (C) 2009 年动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Many species use specific vocalizations that attract conspecifics to food sources or that recruit other group members to inspect secondary predator cues or to mob predators. However, little is known regarding the variation in the acoustic structure of such calls and the associated meaning. In the cooperatively breeding banded mongoose, Mungos mungo, we investigated calls produced in the context of group recruitment to three different stimulus types: ( 1) secondary predator cues; ( 2) snakes; and ( 3) members of rival groups. Calls produced in response to predator faeces differed from the harsher variants elicited by snakes and rival groups, but the latter two elicited similar calls. Only a few calls of intermediate acoustic structure were produced in response to the different stimulus categories. Playbacks of calls elicited by the different stimuli caused individuals to approach the speaker in the same way. However, calls elicited specifically by snakes and rival mongooses resulted in a higher proportion of receivers responding and a faster receiver response than calls elicited by faeces. This suggests a graded rather than a discrete recruitment call system. Thus, despite obvious differences in stimulus type and the purpose of recruitment, the acoustic structure of calls conveys information about the risk of the encountered stimulus and not the stimulus type itself, allowing receivers to adjust their response according to the urgency. Since calling continued for prolonged periods after all group members had gathered around the callers, these calls may also function to deter rivals and to coordinate the subsequent group response. (C) 2009 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.