Adaptive temporal patterns of echolocation and flight behaviors used to fly through varied-sized windows by 2 species of high duty cycle bats  

作　　者：Jianan Ding Yu Zhang Fujie Han Tingting Jiang Jiang Feng Aiqing Lin Ying Liu 

机构地区：[1]Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization,Northeast Normal University,Changchun 130117,China [2]College of Life Science,Jilin Agricultural University,Changchun 130024,China [3]Key Laboratory of Vegetation Ecology,School of Environment,Institute of Grassland Science,Northeast Normal University,Ministry of Education,Changchun 130024,China

出　　处：《Current Zoology》2023年第1期32-40,共9页动物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.31770429 and 32071492);the National Defense Basic Scientific Research Project of China(Grant No.C019220023).

摘　　要：As actively sensing animals guided by acoustic information, echolocating bats must adapt their vocal–motor behavior to various environmentsand behavioral tasks. Here, we investigated how the temporal patterns of echolocation and flight behavior were adjusted in 2 species of batswith a high duty cycle (HDC) call structure, Rhinolophus ferrumequinum and Hipposideros armiger, when they flew along a straight corridorand then passed through windows of 3 different sizes. We also tested whether divergence existed in the adaptations of the 2 species. Both H.armiger and R. ferrumequinum increased their call rates by shortening the pulse duration and inter-pulse interval for more rapid spatial samplingof the environment when flying through smaller windows. Bats produced more sonar sound groups (SSGs) while maintaining a stable proportion of calls that made up SSGs during approaches to smaller windows. The 2 species showed divergent adjustment in flight behavior across3 different window sizes. Hipposideros armiger reduced its flight speed to pass through smaller windows while R. ferrumequinum increasedits flight speed. Our results suggest that these 2 species of HDC bats adopt similar acoustic timing patterns for different tasks although theyperformed different flight behaviors.

关 键 词：echolocating bats environmental clutter flight trajectory sensory adaptation sonar temporal pattern 

分 类 号：Q95[生物学—动物学]