<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Anna Bastian</style></author><author><style face="normal" font="default" size="100%">David Steve Jacobs</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">To seek or speak? Dual function of an acoustic signal limits its versatility in communication</style></title><secondary-title><style face="normal" font="default" size="100%">Animal Behaviour</style></secondary-title><short-title><style face="normal" font="default" size="100%">Animal Behaviour</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acoustic communication</style></keyword><keyword><style  face="normal" font="default" size="100%">bats</style></keyword><keyword><style  face="normal" font="default" size="100%">co-option</style></keyword><keyword><style  face="normal" font="default" size="100%">constraints</style></keyword><keyword><style  face="normal" font="default" size="100%">eavesdropping</style></keyword><keyword><style  face="normal" font="default" size="100%">echolocation</style></keyword><keyword><style  face="normal" font="default" size="100%">habituation–dishabituation playback</style></keyword><keyword><style  face="normal" font="default" size="100%">individual and sex discrimination</style></keyword><keyword><style  face="normal" font="default" size="100%">signal design</style></keyword><keyword><style  face="normal" font="default" size="100%">vocal signatures</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-05-2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S0003347217300775</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">127</style></volume><pages><style face="normal" font="default" size="100%">135 - 152</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The perception of different attributes of conspecifics is an integral part of intraspecific communication. It can facilitate the recognition of interaction partners or the assessment of potential mates. Acoustic signals can encode fine-scaled information through the interplay of acoustic variability and specificity. A reliable vocal signature is both unique within a class and variable between classes. Therefore, acoustic complexity might be associated with the number of classes to be discriminated. We investigated the assumption that limitations to signal design may affect the communicative functionality of a signal. To do so, we chose a signal with potentially dual functionality which may therefore display such limitations. In bats, echolocation is used primarily for foraging and orientation but there is increasing support for its additional role in communication. An acoustic analysis of echolocation pulses of the bat Rhinolophus clivosus confirmed sex and individual vocal signatures in echolocation pulses. A habituation&amp;ndash;dishabituation playback experiment suggested that bats perceived these signatures because listening bats clearly discriminated between the sexes (two classes) and between individuals (representatives of a multiclass category), although to different degrees. The simple acoustic structure of these vocalizations provides sufficient specificity for sex discrimination but has limitations for individual discrimination because pulse parameters of individuals increasingly overlapped with increasing group size. We conclude that selection for the primary function of echolocation restricts the acoustic space available for communication. However, we frequently observed echolocation pulses with conspicuous structural modifications. Statistical analyses revealed that these vocalizations yielded increased individual distinctiveness. Such added systematic variation may indicate a communicative function and perhaps a signalling intent of the emitter, although the latter has yet to be tested. The findings suggest that the required specificity for effective communication could be obtained through modification of echolocation variants when adaptations for orientation and foraging constrain the evolution of complex communication signatures.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dorado-Correa, Adriana M.</style></author><author><style face="normal" font="default" size="100%">Goerlitz, Holger R.</style></author><author><style face="normal" font="default" size="100%">Siemers, Björn M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Interspecific acoustic recognition in two European bat communities</style></title><secondary-title><style face="normal" font="default" size="100%">Frontiers in Physiology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Front. Physiol.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acoustic communication</style></keyword><keyword><style  face="normal" font="default" size="100%">eavesdropping</style></keyword><keyword><style  face="normal" font="default" size="100%">echolocation</style></keyword><keyword><style  face="normal" font="default" size="100%">feeding buzz</style></keyword><keyword><style  face="normal" font="default" size="100%">interspecific communication</style></keyword><keyword><style  face="normal" font="default" size="100%">intraspecific communication</style></keyword><keyword><style  face="normal" font="default" size="100%">search calls</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-01-2013</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://journal.frontiersin.org/article/10.3389/fphys.2013.00192/abstract</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Echolocating bats emit echolocation calls for spatial orientation and foraging. These calls are often species-specific and are emitted at high intensity and repetition rate. Therefore, these calls could potentially function in intra- and/or inter-specific bat communication. For example, bats in the field approach playbacks of conspecific feeding buzzes, probably because feeding buzzes indicate an available foraging patch. In captivity, some species of bats recognize and distinguish the echolocation calls of different sympatric species. However, it is still unknown if and how acoustic species-recognition mediates interspecific interactions in the field. Here we aim to understand eavesdropping on bat echolocation calls within and across species boundaries in wild bats. We presented playbacks of conspecific and heterospecific search calls and feeding buzzes to four bat species with different foraging ecologies. The bats were generally more attracted by feeding buzzes than search calls and more by the calls of conspecifics than their heterospecifics. Furthermore, bats showed differential reaction to the calls of the heterospecifics. In particular, &amp;lt;i&amp;gt;Myotis capaccinii&amp;lt;/i&amp;gt; reacted equally to the feeding buzzes of conspecifics and to ecologically more similar heterospecifics. Our results confirm eavesdropping on feeding buzzes at the intraspecific level in wild bats and provide the first experimental quantification of potential eavesdropping in European bats at the interspecific level. Our data support the hypothesis that bat echolocation calls have a communicative potential that allows interspecific, and potentially intraspecific, eavesdropping in the wild.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Anna Bastian</style></author><author><style face="normal" font="default" size="100%">David Steve Jacobs</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">To seek or speak? Dual function of an acoustic signal limits its versatility in communication</style></title><secondary-title><style face="normal" font="default" size="100%">Animal Behaviour</style></secondary-title><short-title><style face="normal" font="default" size="100%">Animal Behaviour</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acoustic communication</style></keyword><keyword><style  face="normal" font="default" size="100%">bats</style></keyword><keyword><style  face="normal" font="default" size="100%">co-option</style></keyword><keyword><style  face="normal" font="default" size="100%">constraints</style></keyword><keyword><style  face="normal" font="default" size="100%">eavesdropping</style></keyword><keyword><style  face="normal" font="default" size="100%">echolocation</style></keyword><keyword><style  face="normal" font="default" size="100%">habituation–dishabituation playback</style></keyword><keyword><style  face="normal" font="default" size="100%">individual and sex discrimination</style></keyword><keyword><style  face="normal" font="default" size="100%">signal design</style></keyword><keyword><style  face="normal" font="default" size="100%">vocal signatures</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-05-2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://linkinghub.elsevier.com/retrieve/pii/S0003347217300775</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">127</style></volume><pages><style face="normal" font="default" size="100%">135 - 152</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The perception of different attributes of conspecifics is an integral part of intraspecific communication. It can facilitate the recognition of interaction partners or the assessment of potential mates. Acoustic signals can encode fine-scaled information through the interplay of acoustic variability and specificity. A reliable vocal signature is both unique within a class and variable between classes. Therefore, acoustic complexity might be associated with the number of classes to be discriminated. We investigated the assumption that limitations to signal design may affect the communicative functionality of a signal. To do so, we chose a signal with potentially dual functionality which may therefore display such limitations. In bats, echolocation is used primarily for foraging and orientation but there is increasing support for its additional role in communication. An acoustic analysis of echolocation pulses of the bat Rhinolophus clivosus confirmed sex and individual vocal signatures in echolocation pulses. A habituation&amp;ndash;dishabituation playback experiment suggested that bats perceived these signatures because listening bats clearly discriminated between the sexes (two classes) and between individuals (representatives of a multiclass category), although to different degrees. The simple acoustic structure of these vocalizations provides sufficient specificity for sex discrimination but has limitations for individual discrimination because pulse parameters of individuals increasingly overlapped with increasing group size. We conclude that selection for the primary function of echolocation restricts the acoustic space available for communication. However, we frequently observed echolocation pulses with conspicuous structural modifications. Statistical analyses revealed that these vocalizations yielded increased individual distinctiveness. Such added systematic variation may indicate a communicative function and perhaps a signalling intent of the emitter, although the latter has yet to be tested. The findings suggest that the required specificity for effective communication could be obtained through modification of echolocation variants when adaptations for orientation and foraging constrain the evolution of complex communication signatures.&lt;/p&gt;
</style></abstract></record></records></xml>