Author/Authors :
ZAINUDIN, RAMLAH Universiti Kebangsaan Malaysia - Pusat Pengajian Sains Sekitaran dan Sumber Alam Fakulti Sains dan Teknologi, Malaysia , ABDUL RAHMAN, MUSTAFA Universiti Malaysia Sarawak - Jabatan Zoologi, Fakulti Sains dan Teknologi Sumber, Malaysia , MOHD ZAIN, BADRUL MUNIR Universiti Kebangsaan Malaysia - Pusat Pengajian Sains Sekitaran dan Sumber AlamFakulti Sains dan Teknologi, Malaysia , SHUKOR, MD. NOR Universiti Kebangsaan Malaysia - Pusat Pengajian Sains Sekitaran dan Sumber AlamFakulti Sains dan Teknologi, Malaysia , NORHAYATI, AHMAD Universiti Kebangsaan Malaysia - Pusat Pengajian Sains Sekitaran dan Sumber AlamFakulti Sains dan Teknologi, Malaysia , INGER, ROBERT F. Field Museum of Natural History, Chicago
Abstract :
Recordings of Bornean frog calls from the genus Hylarana were conducted at seven study sites in Sarawak, Malaysia. As many as 12 individuals from five species of Bornean frogs were successfully recorded and analysed. From 38 calling parameters, only 27 could explain call characteristics of the Bornean frogs. The size of male frogs influenced the energy of calling significantly between 90:50% of the peak amplitude, frequency of note between 50%, duration of calling to reach half of the frequency modulation, and the rate of repeated note. The size of Bornean frog showed a marginally significant difference in the basic frequency and dominant calls. Additionally, distribution of calling parameters and Euclid dendogram support taxonomic identifications of each of the Bornean frog species studied.
Keywords :
Bornean Hylarana , calling frequency , characteristic of frog calls , duration of call , rate of repeated call
