兽类学报2025，Vol.45Issue(6)：797-809,13.DOI:10.16829/j.slxb.150966
布氏田鼠警戒鸣叫的生态适应不支持声音适应假说
Ecological adaptations of alarm calls in Brandt's voles did not support the acoustic adaptation hypothesis
摘要
Abstract
Vocal alarm is one of the important survival strategies for animals,where habitat vegetation cover,climatic factors,noise,and call purpose may play a role in the adaptive tuning of animal calls.How the alarm calls of animals adapt to the temporal changes of habitat structure remains poorly explored.The acoustic adaptation hypothesis(AAH)suggests that animal calls should evolve in a direction that facilitates efficient transmission in their environment,but not all empirical reports support its predictions.The alarm calls of Brandt's voles(Lasiopodomys brandtii)are an important anti-predator behavior.To detect the acoustic characteristics and functional adaptability of their alarm calls,in May,July,and September 2023,the alarm calls of Brandt's voles were collected in the typical steppe area of Xin Barag Right Ban-ner,Inner Mongolia.These calls were then combined with the local historical climate parameters and real-time environ-mental noise indicators to analyze the relationship between the characteristics of their alarm calls and the habitat.The re-sults showed that the alarm calls of Brandt's voles exhibit both monosyllabic(13.1％)and multisyllabic acoustic(86.9％)characteristics.Furthermore,the minimum and maximum fundamental frequency were significantly positively correlated with habitat vegetation index and ambient relative humidity,respectively,but significantly negatively correlat-ed with wind speed.The maximum fundamental frequency and fundamental frequency range were significantly positive-ly correlated with ambient noise,while other frequency(i.e.the minimum fundamental frequency)and time(i.e.inter-note intervals of a call)domain parameter showed a negative correlation.Under the environmental conditions of relative-ly high temperature,abundant rainfall,and low noise in summer(July),the alarm calls of Brandt's voles were character-ized by long pulses with relatively concentrated audio frequencies and high-frequency sounds with loose syllables.In spring(May)and autumn(September),which were relatively dry,windy,and noisy,especially in September,the calls were adjusted to short pulses and broadband low-frequency sounds with dense syllables.The alarm calls of Brandt's voles responded to the seasonal changes in relative humidity,wind,and noise rather than vegetation canopy density,which did not support the acoustic adaptation hypothesis.This difference was also the result of their trade-off between anti-predator risks and benefits and was closely related to the dispersal of their offspring or family relatives.This study provides a basis for the anti-predator acoustic countermeasures related to the adaptation of Brandt's voles to colonial and seasonal breeding life.关键词
布氏田鼠/警戒鸣叫/声音适应性假说/栖息地结构/反捕食声讯对策Key words
Lasiopodomys brandtii/Alarm calls/Acoustic adaptation hypothesis/Habitat factors/Anti-predatory acous-tic strategy分类
生物科学引用本文复制引用
LI Qiangyun,WU Jinhai,Siriguleng,ZHANG Jianping,LIU Yuming,XIAO Zhishu,SU Junhu,LIU Wei..布氏田鼠警戒鸣叫的生态适应不支持声音适应假说[J].兽类学报,2025,45(6):797-809,13.基金项目
国家自然科学基金重大项目(32090024) （32090024）
中国科学院动物研究所自主部署项目(2024IOZ0105) （2024IOZ0105）
动物多样性保护与有害动物防控全国重点实验室自主部署项目(SKLA2507) （SKLA2507）
