Whistle sound detection and behaviour of male dolphin bottle nose (Tursiops aduncus) using noisy time domain modelling in captivity

Abstract

Whistle sound is a voice that is intended to echolocation, whistle sound is a major role in internal and intergroup communication. The objective research passive acoustic was to examine the power spectral patterns and fluctuations in sound based on the frequency of the sounds produced by male bottle nose dolphin and observing the position of male bottle nose dolphin. Data recording was taken at the Safari Park of Cisarua Bogor in Indonesia, by taking data in show captivity. The results showed that salinity before feeding time in the show captivity with replication 1,2, and 3 has salinity value that is equal to 30 ‰. Data at the show captivity before feeding with replications 1,2, and 3 has a salinity of 29 ‰. Sound whistle 3 before feeding time of 28.03 dB with the frequency interval of 14 642 Hz-16000 Hz. F-test at the show captivity before meals has heterogeneous value. Treat before meals at the show captivity has a value of P <0.001 and P <0.001. Value Noisy Time Domain have differences with each other and have a lot of different sound patterns. In general, there are real differences are evidenced by F test on a range of time at each whistle on show captivity in the time before meals. The behavior of male bottle nose dolphin have a habit that has the movement toward the surface of the captivity and movement and position will be influenced frequency and intensity value (Meals time is done in the morning, afternoon, and afternoon with the difference before and after meals have a 4-hour interval). In general, there is a significant difference evidenced by the F test at 4-hour intervals at each whistle sound in captivity at both before meals.