Analysis on The Sound Spectrum of Calls in The Gansu Zokor,Myospalax cansus

In this paper,the sound spectra of fidget calls,threatening calls,alarm calls and attack calls of the adult Gansu zokor (Myospalax cansus) were analysed.The results indicate that the Gansu zokors fidget calls occurred in sleep occasionally.The sound spectrum of fidget call is simple,there is only one energy range (936-1833 Hz),the main peak frequency (MPF)was 1501 Hz,the duration 366 μs,and the interval 135 μs.The Gansu zokor gave out threatening calls when two individuals encounter.The threatening calls have two energy ranges (58.5-2671.5 Hz,3237-5518.5 Hz) and the MPF was 1170-1287 Hz.The duration of the females threatening call was longer than that of male.The interval of threatening calls of female and male were 254 μs and 315 μs respectively.When the zokor was in danger or was captured,it gave out alarm calls.This kind of calls have two energy ranges also (1677- 2340 Hz,3315-4816 Hz).The frequency of alarm call is the highest of the four kinds of calls,MPF is 3783 Hz and the duration is 1266.67 μs.The zokor sounded attack calls while attacking other individuals.The sonograms of attacking calls were complicated than those of other calls and there were three energy ranges.Two are located in low frequency range (97.5-975 Hz,975-2262 Hz) and the rest one located in medium frequency range (164.5-5148 Hz).Average MPF is 1228.5 Hz.The duration of male was 1071 μs,while the females was 564 μs.The intervals of female was 288 μs,while the males was 231 μs.The frequencies of Gansu zokors calls are located in the low or medium energy ranges,this is similar to the other subterranean rodents calls.