Bats adjust temporal parameters of echolocation pulses but not those of communication calls in response to traffic noise  

作　　者：Shengjing SONG Aiqing LIN Tinglei JIANG Xin ZHAO Walter METZNER Jiang FENG 

机构地区：[1]Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization,Northeast Normal University,Changchun,Jilin,China [2]Department of Integrative Biology and Physiology,University of California,Los Angeles,California,USA [3]College of Life Science,Jilin Agricultural University,Changchun,Jilin,China

出　　处：《Integrative Zoology》2019年第6期576-588,共13页整合动物学（英文版）

基　　金：the National Natural Science Foundation of Chi­na(31500314 and 31872681 to A.L.,31670390 to J.F.and 31470457 to T.L.);the Fundamental Research Funds for the Central Universities(2412017FZ024 to A.L.);the Fund of Jilin Province Science and Technol­ogy Development Project(20180101024JC to T.L.);the“1000 Talent Plan for High-Level Foreign Experts”from the Organization Department of the CPC Central Committee(WQ20142200259 to W.M.).

摘　　要：Many studies based on acute short-term noise exposure have demonstrated that animals can adjust their vocal­izations in response to ambient noise.However,the effects of chronic noise over a relatively long time scale of multiple days remain largely unclear.Bats rely mainly on acoustic signals for perception of environmental and social communication.Nearly all previous studies on noise-induced vocal adjustments have focused on echo­location pulse sounds.Relatively little is known regarding the effects of noise on social communication calls.Here,we examined the dynamic changes in the temporal parameters of echolocation and communication vocal­izations of Vespertilio sinensis when exposed to traffic noise over multiple days.We found that the bats start­ed to modify their echolocation vocalizations on the fourth day of noise exposure,with an increase of 42-91%in the total number of pulse sequences per day.Under noisy conditions,the number of pulses within a pulse se­quence decreased by an average of 17.2%,resulting in a significantly slower number of pulses/sequence(P<0.001).However,there was little change in the duration of a pulse sequence.These parameters were not signifi­cantly adjusted in most communication vocalizations under the noise condition(all P>0.05),except that the duration decreased and the number of syllables/sequences increased in 1 type of communicative vocalization(P<0.05).This study suggests that bats routinely adjust temporal parameters of echolocation but rarely of com­munication vocalizations in response to noise condition.

关 键 词：CHIROPTERA chronic noise pollution response latency temporal parameters vocal adjustment 

分 类 号：TN2[电子电信—物理电子学]