Network analysis reveals context-dependent structural complexity of social calls in serrate-legged small treefrogs  

作　　者：Ke Deng Qiao-Ling He Tong-Liang Wang Ji-Chao Wang Jian-Guo Cui 

机构地区：[1]CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China [2]University of Chinese Academy of Science,Beijing 100049,China [3]Ministry of Education Key Laboratory for Ecology of Tropical lslands,Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province,College of Life Sciences,Hainan Normal University,Haikou 571158,China

出　　处：《Current Zoology》2024年第2期253-261,共9页动物学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31772464,32000313);Youth Innovation Promotion Association CAS(2012274);Sichuan ScienceandTechnology Program1(2022JDTD0026);NaturalScience Foundation of Sichuan Province(2022NSFSC1736);Open Research Program in Ministry of Education Key Laboratory for Ecology of Tropical Islands(HNSF-OP-202002).

摘　　要：Vocal communication plays an important role in survival,reproduction,and animal social association.Birds and mammals produce com-plex vocal sequence to convey context-dependent information.Vocalizations are conspicuous features of the behavior of most anuran species(frogs and toads),and males usually alter their calling strategies according to ecological context to improve the attractiveness/competitiveness.However,very few studies have focused on the variation of vocal sequence in anurans.In the present study,we used both conventional method and network analysis to investigate the context-dependent vocal repertoire,vocal sequence,and call network structure in serrate-legged small treefrogs Kurixalus odontotarsus.We found that male K.odontotarsus modified their vocal sequence by switching to different call types and increasing repertoire size in the presence of a competitive rival.Specifically,compared with before and after the playback of advertisement calls,males emited fewer advertisement calls,but more aggressive calls,encounter calls,and compound calls during the playback period.Network analysis revealed that the mean degree,mean closeness,and mean betweenness of the call networks significantly decreased during the playback period,which resulted in lower connectivity.in addition,the increased proportion of one-way motifs and average path length also indicated that the connectivity of the call network decreased in competitive context.However,the vocal sequence of K.odontotarsus did not display a clear small-world network structure,regardless of context.Our study presents a paradigm to apply network analysis to vocal sequence in anurans and has important implications for understanding the evolution and function of sequence patterns.

关 键 词：call network CENTRALITY Kurixalus odontotarsus vocal repertoire vocal sequence. 

分 类 号：Q62[生物学—生物物理学]