Differences in Echolocation Click Patterns of the Beluga (Dolphinopterus leucas) and the Bottlenose Dolphin (Tursiops truncatus)

In an echolocation experiment, the target detection performance of a beluga and a bottlenose dolphin were similar, but each produced different patterns of echolocation click trains. The beluga emitted three different patterns of echolocation clicks. A pattern I click train started with low- amplitud...

Full description

Bibliographic Details
Main Authors: Turl, Charles W., Penner, Ralph H.
Other Authors: NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Format: Text
Language:English
Published: 1990
Subjects:
Biological Oceanography
Acoustics
*DOLPHINS(MAMMALS)
*ECHO RANGING
*MARINE BIOLOGICAL NOISE
PATTERNS
TARGET DETECTION
REVERBERATION
WAVE PACKETS
UNDERWATER SOUND SIGNALS
CETACEA
STRATEGY
REPRINTS
TIME INTERVALS
AMBIENT NOISE
BELUGA WHALE
DOLPHINOPTERUS LEUCAS
TURSIOPS TRUNCATUS
WUDN688674
Beluga
Beluga whale
Beluga*
Online Access:http://www.dtic.mil/docs/citations/ADA224154
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA224154
Description
Summary:In an echolocation experiment, the target detection performance of a beluga and a bottlenose dolphin were similar, but each produced different patterns of echolocation click trains. The beluga emitted three different patterns of echolocation clicks. A pattern I click train started with low- amplitude clicks, followed by packets of clicks. A packet contained several clicks with interclick intervals less than the two-way travel time to the target; the interpacket intervals were greater than the two-way travel time. A pattern II click train consisted of individual clicks, some with intervals less than and some greater than the two-way travel time. This pattern did not contain packets. The third pattern of click trains consisted of individual clicks with interclick intervals less than the two-way travel time. However, the bottlenose dolphin always emitted clicks with interclick intervals greater than the two-way travel time. These differences in click patterns suggest that the beluga has a different echolocation strategy than the bottlenose dolphin. Keywords: Dolphins mammals; Cetacea; Marine biological noise; Echo ranging; Ambient noise/ reverberation; Marine biosystems; Reprints. Pub. in the Jnl. of Acoustical Society of America, v86 n2 p497-502 Aug 1989.

Similar Items