The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
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The Call Patterns and the Change of Calls by Water Temperature in Rana plancyi (Amphibia, Anura)

금개구리(Rana plancyi)의 소리 유형과 수온에 따른 소리변화

  • 박시룡 (한국교원대학교 생물교육과) ;
  • 이병근 (한국교원대학교 생물교육과) ;
  • 양서영 (인하대학교 생물학과)
  • Published : 1998.06.01
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Abstract

The study of the Rana plancyi, was done during the calling period at a pond in Osong, Chungbuk, Korea from May to the middle of August of 1996 and 1997. Five basic types of call-A, B, C, D, E, - were identified in Rana plancyi according to the structure of call types. The structure of A type call has only one pulse, B type call has two pulses and C, D type call has one separated pulse which is called introductory call and pulse group as follow it. On the other hand, E type call has 3-6 separate pulses. The interval between introductory call and pulse group is $0.73{\pm}0.29$ s(n=159) in C type call and $0.60{\pm}0.21$ s (n=48) in D type call. The number of pulses in the pulse group is $30.08{\pm}8.69$ in C type call and $15.78{\pm}2.40$ in D type call. An increase in water temperature induces a decrease in C and D type call duration (C type call r= -0.4153, p<0.001, D type call r=-0.7064, p<0.001). In case of C and D type call, the interval between introductory call and pulse group influenced more call duration than pulse group duration. We regarded A, B type call as a territorial call and C, D type call as a mating call and we recognized that E type call has the function of threat or alarm.

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