兽类学报2025，Vol.45Issue(6)：820-830,11.DOI:10.16829/j.slxb.151048
白头叶猴的长距离鸣叫具有防御过夜地的功能
The long-distance calling of white-headed langurs(Trachypithecus leuco-cephalus)serves a defensive function for their sleeping sites
摘要
Abstract
Long-distance calling is a distinctive vocal signal known for its loudness and long-range transmission,typical-ly emitted by male individuals.It is often inferred to serve important socio-ecological functions,such as territory de-fense,protection of valuable resources,and mate attraction.The white-headed langur(Trachypithecus leucocephalus)is an endemic primate species in China,inhabiting the karst limestone forests in the southwestern of Guangxi.The role of long-distance calling in the survival and reproduction of white-headed langurs remains unclear.Between February 2023 and August 2023,we collected data on the long-distance calling locations and times of adult males from eight white-headed langur groups,as well as information on their foraging and sleeping sites,in the Banli area of the Chongzuo White-headed Langur National Nature Reserve,Guangxi.We tested the defensive function of long-distance calls con-cerning two important resources:food and sleeping sites.The results indicated that adult male white-headed langurs initi-ate their first long-distance calls an average of 38 min after the group departs from the cave,at an average distance of 43 m from the sleeping site.They make their last long-distance calls an average of 39 min before the group returns to the cave,also at an average distance of 43 m from the sleeping site.Additionally,the location of the sleeping site significant-ly influenced the calling location of the white-headed langurs,supporting the hypothesis that these calls serve a sleeping site defense function.However,foraging locations had no significant impact on calling locations,which did not support the food resource defense hypothesis.These findings indicate that long-distance calling in white-headed langurs is used for defending sleeping sites but not food resources.This study is the first to clarify the role of long-distance calls in de-fending critical survival resources in white-headed langurs.It enhances our understanding of the adaptive mechanisms and functions of vocal communication in white-headed langurs and provides scientific evidence for the conservation of rare and endangered species.关键词
白头叶猴/长距离鸣叫/资源防御假说/濒危物种保护Key words
White-headed langurs(Trachypithecus leucocephalus)/Long-distance call/Resource defense hypothesis/Endangered species conservation分类
生物科学引用本文复制引用
SONG Yuqian,YI Bojun,TAO Meijie,NONG Dengpan,ZHOU Qihai,FAN Penglai..白头叶猴的长距离鸣叫具有防御过夜地的功能[J].兽类学报,2025,45(6):820-830,11.基金项目
广西自然科学基金重点项目(2022GXNSFDA08004) （2022GXNSFDA08004）
国家自然科学基金(32470497,32170492,31900335) （32470497,32170492,31900335）
广西科技基地和人才专项(桂科23026190) （桂科23026190）
