02100nas a2200241   4500008004100000022001300041245010800054210006900162260001600231300001200247490000800259520136000267653002201627653002901649653002101678100001401699700001901713700001401732700001501746700001401761700001601775856006701791       2019                        eng d  a0003347200aAcoustic signalling of aggressive intent in the agonistic encounters of female Asian particoloured bats0 aAcoustic signalling of aggressive intent in the agonistic encoun  cJan-03-2019  a65 - 750 v1493 a<p>The signals of animal aggressive intent can communicate aggression levels to competitors, thereby settling conflicts at an early stage and thus reducing energy costs. We tested whether aggressive vocalizations of female Asian particoloured bats, Vespertilio sinensis, encode aggressive intent during agonistic encounters that occur whenever an intruder pushes a resident to obtain a more central roosting spot. Our results showed that the number of noisy/tonal syllables of the disturbed bats met the three criteria used to define aggressive intent. First, the number and ratio of tonal syllables were significantly greater when intruders continued to push, and the number and ratio of noisy syllables were significantly greater when they stopped pushing (context criterion). Second, skin temperature related to emotional arousal during aggressive interaction generally increased when intruders stopped pushing but was unchanged or decreased when they continued pushing (predictive criterion). Finally, bats preferentially selected stimuli with more tonal syllables, and they spent more time approaching more noisy syllables in a two-choice playback experiment (response criterion). Thus, we propose that the number of noisy/tonal syllables within aggressive vocalizations of female Asian particoloured bats functions to signal aggressive intent.</p>
10aaggressive intent10aaggressive vocalizations10askin temperature1 aZhao, Xin1 aJiang, Tinglei1 aLiu, Heng1 aWang, Yuze1 aLiu, Ying1 aFeng, Jiang  uhttps://linkinghub.elsevier.com/retrieve/pii/S0003347219300132