Abstract：
Many group-living animals coordinate social behaviours using contact calls, which can be produced for all group members or targeted at specific individuals. In the disc-winged bat, Thyroptera tricolor, group members use \'inquiry\' and \'response\' calls to coordinate daily movements into new roosts (furled leaves). Rates of both calls show consistent among-individual variation, but causes of within-individual variation remain unknown. Here, we tested whether disc-winged bats produce more contact calls towards group members with higher kinship or association. In 446 experimental trials, we recorded 139 random within-group pairs of one flying bat (producing inquiry calls for roost searching) and one roosting bat (producing response calls for roost advertising). Using generalized linear mixed-effect models (GLMM), we assessed how response and inquiry calling rates varied by sender, receiver, genetic kinship and co-roosting association rate. Calling rates varied consistently across senders but not by receiver. Response calling was influenced by inquiry calling rates, but neither calling rate was higher when the interacting pair had higher kinship or association. Rather than dyadic calling rates indicating within-group relationships, our findings are consistent with the hypothesis that bats produce contact calls to maintain contact with any or all individuals within a group while collectively searching for a new roost site. This article is part of the theme issue \'The power of sound: unravelling how acoustic communication shapes group dynamics\'.
摘要：
许多群居动物通过联络电话协调社会行为，可以为所有组成员或针对特定个人生产。在盘翼蝙蝠中，三色胸翅目，小组成员使用\'inquiry\'和\'response\'调用来协调日常运动到新的栖息地（卷叶）。两个调用的比率显示出个体间一致的差异，但是个体内部变异的原因仍然未知。这里,我们测试了盘翼蝙蝠是否会对具有更高亲属关系或关联关系的小组成员产生更多的联系电话。在446个实验试验中，我们记录了139个随机的组内成对的一只飞行蝙蝠（产生用于搜索的询问电话）和一只栖息蝙蝠（产生用于广告的响应电话）。使用广义线性混合效应模型(GLMM)，我们评估了不同发件人的响应和查询呼叫率如何变化，接收器,遗传亲缘关系和共同生根关联率。呼叫速率在各个发件人之间一致变化，而不是接收者。响应呼叫受到询问呼叫率的影响，但是当相互作用的对具有更高的亲属关系或关联时，呼叫率都不高。而不是表示组内关系的二元呼叫率，我们的研究结果与以下假设一致:蝙蝠在集体寻找新的栖息地时,会发出联络电话,以保持与群体中任何或所有个体的联系.本文是“声音的力量：揭示声音交流如何塑造群体动力学”主题的一部分。
