Propagation of beluga whale echolocation signals

Species-specific beaked whale echolocation signals.

Beaked whale echolocation signals are mostly frequency-modulated (FM) upsweep pulses and appear to be species specific. Evolutionary processes of niche separation may have driven differentiation of beaked whale signals used for spatial orientation and foraging. FM pulses of eight species of beaked whales were identified, as well as five distinct pulse types of unknown species, but presumed to b...

Echolocation signals of a beaked whale at Palmyra Atoll.

Acoustic recordings from Palmyra Atoll, northern Line Islands, central Pacific, showed upsweep frequency modulated pulses reminiscent of those produced by beaked whales. These signals had higher frequencies, broader bandwidths, longer pulse durations and shorter inter-pulse intervals than previously described pulses of Blainville's, Cuvier's and Gervais' beaked whales [Zimmer et al. (2005). J. ...

The electrocardiogram of a Beluga whale.

Correction: Spatio-Temporal Patterns of Beaked Whale Echolocation Signals in the North Pacific

There are errors in the Funding section. The correct Funding information is as follows: Funding provided by United States Office of Naval Research, M. Weise (http://www.onr.navy.mil/en/Science-Technology/ Departments/Code-32/All-Programs/Atmosphere-Research-322/ Marine-Mammals-Biology.aspx), United States Navy Living Marine Resources, B. Gisiner and F. Stone (http://www.lmr.navy. mil), United S...

Spatio-Temporal Patterns of Beaked Whale Echolocation Signals in the North Pacific

At least ten species of beaked whales inhabit the North Pacific, but little is known about their abundance, ecology, and behavior, as they are elusive and difficult to distinguish visually at sea. Six of these species produce known species-specific frequency modulated (FM) echolocation pulses: Baird's, Blainville's, Cuvier's, Deraniyagala's, Longman's, and Stejneger's beaked whales. Additionall...