00390nam a2200109   4500008004100000245007300041210006900114260001300183100002500196700001800221856004100239       2016                        eng d00aPredator-Prey Interactions: Co-evolution between Bats and their Prey0 aPredatorPrey Interactions Coevolution between Bats and their Pre  bSpringer1 aJacobs, David, Steve1 aBastian, Anna  uhttps://bio.acousti.ca/da/node/5759103163nas a2200277   4500008004100000022001300041245009800054210006900152260001600221300001400237490000800251520229700259653002702556653000902583653001402592653001602606653001802622653001702640653004202657653003802699653001802737653002102755100001802776700002502794856006602819       2017                        eng d  a0003347200aTo seek or speak? Dual function of an acoustic signal limits its versatility in communication0 aTo seek or speak Dual function of an acoustic signal limits its   cJan-05-2017  a135 - 1520 v1273 a<p>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&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.</p>
10aacoustic communication10abats10aco-option10aconstraints10aeavesdropping10aecholocation10ahabituation–dishabituation playback10aindividual and sex discrimination10asignal design10avocal signatures1 aBastian, Anna1 aJacobs, David, Steve  uhttp://linkinghub.elsevier.com/retrieve/pii/S000334721730077503163nas a2200277   4500008004100000022001300041245009800054210006900152260001600221300001400237490000800251520229700259653002702556653000902583653001402592653001602606653001802622653001702640653004202657653003802699653001802737653002102755100001802776700002502794856006602819       2017                        eng d  a0003347200aTo seek or speak? Dual function of an acoustic signal limits its versatility in communication0 aTo seek or speak Dual function of an acoustic signal limits its   cJan-05-2017  a135 - 1520 v1273 a<p>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&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.</p>
10aacoustic communication10abats10aco-option10aconstraints10aeavesdropping10aecholocation10ahabituation–dishabituation playback10aindividual and sex discrimination10asignal design10avocal signatures1 aBastian, Anna1 aJacobs, David, Steve  uhttp://linkinghub.elsevier.com/retrieve/pii/S0003347217300775