Acoustic communication underground: Vocalization characteristics in subterranean social mole-rats (Cryptomys sp, Bathyergidae)

被引:54
作者
Credner, S
Burda, H
Ludescher, F
机构
[1] UNIV ESSEN GESAMTHSCH, ABT ALLGEMEINE ZOOL, FB BIOL 9, D-45117 ESSEN, GERMANY
[2] UNIV FRANKFURT KLINIKUM, ZENTRUM MORPHOL, D-60590 FRANKFURT, GERMANY
来源
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY | 1997年 / 180卷 / 03期
关键词
mole-rat; vocalization; acoustic communication; subterranean mammal; hearing; evolution;
D O I
10.1007/s003590050045
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
In captive adult Zambian mole-rats 14 different sounds (13 true vocalizations) have been recorded during different behavioural contexts. The sound analysis revealed that all sounds occurred in a low and middle frequency range with main energy below 10 kHz. The majority of calls contained components of 1.6-2 kHz, 0.63-0.8 kHz, and/or 5-6.3 kHz. The vocalization range thus matched well the hearing range as established in other studies. The frequency content of courtship calls in two species of Zambian Cryptomys was compared with that in naked mole-rats (Heterocephalus glaber) and blind mole-rats (Spalax ehrenbergi) as described in the literature. The frequency range of maximum sound energy is negatively correlated with the body weight and coincides with the frequencies of best hearing in the respective species. In general, the vocalization range in subterranean mammals is shifted towards low frequencies which are best propagated in underground burrows.
引用
收藏
页码:245 / 255
页数:11
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