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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 34, No. 3, 2013, pp. 196-203
Bioline Code: zr13044
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 34, No. 3, 2013, pp. 196-203

 en Comparison of mating calls and adaptive strategies of Amolops wuyiensis check for this species in other resources and Odorrana tormotus check for this species in other resources (Anura) in noise-controlled environments
ZHANG, Fang; CHEN, Pan & ZHAO, Shu-Yi

Abstract

In order to understand the acoustic characteristics and adaptive strategies of sympatric male Amolops wuyiensis check for this species in other resources and male Odorrana tormotus check for this species in other resources in environments controlled for high noise levels, we recorded and analyzed the advertisement calls produced by individual males during breeding season. The results show that A. wuyiensis produced a single type of call composed of variable syllables (from 3 to 6 syllables) with 2~10 pulses over different time periods. The average values of call duration, dominant frequency and signal noise ratio were 2 198.20 ms, 2 231.90 Hz and 33.00 dB respectively. There were no ultrasonic elements in A. wuyiensis calls and they did not have the basis of ultrasonic communication. The average values of call duration, dominant frequency and signal noise ratio of O. tormotus were 331.80 ms, 6 665.50 Hz and 37.00 dB respectively. Call structure of O. tormotus was consistent with previous studies. The noise did not mask the calls from the male A. wuyiensis and male O. tormotus, which have higher frequencies and amplitudes. To fulfill the intra-species communication in a noise-controlled environment, the A. wuyiensis male, which has a low vocal frequency and long transmission length, varied vocal frequency, composition, and duration, the latter of which serves to attract females. By contrast, the male O. tormotus increased vocal frequency, which reduces the energy expended on intra-species communication.

Keywords
Amolops wuyiensis; Odorrana tormotus; Noise; Mating Advertisement call; Adaptive strategy

 
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