... their auditory sensitivity when emitting clicks. However, it remains unclear whether these adaptations also led to changes of the startle reflex. We investigated reactions to startling sounds in two bottlenose dolphins ( Tursiops truncatus ) and one false killer whale ( Pseudorca crassidens ). Animals were...

...Sam Ridgway; Mandy Keogh; Don Carder; James Finneran; Tricia Kamolnick; Mark Todd; Allen Goldblatt SUMMARY The present study reports the first use of a choice visual–vocal response time cognitive task, during 72 or 120 h of continuous auditory vigilance. Two adult bottlenose dolphins ( Tursiops...

... examines the relationships between target range (R), click intervals,and source levels of wild bottlenose dolphins ( Tursiops sp.) by recording regular (non-buzz) echolocation clicks with a linear hydrophone array. Dolphins clicked faster with decreasing distance to the array,reflecting a decreasing delay...

...Sam Ridgway; Don Carder; James Finneran; Mandy Keogh; Tricia Kamolnick; Mark Todd; Allen Goldblatt SUMMARY The present report describes the first study of continuous vigilance in dolphins. Two adult bottlenose dolphins ( Tursiops truncatus ), WEN(male) and SAY (female), maintained a very high...

... physiology as well as pathology. * Author for correspondence at address 2 (e-mail: [email protected] ) 25 5 2006 © The Company of Biologists Limited 2006 2006 dolphin Tursiops functional imaging diazepam SPECT scan MRI scan PET scan brain unihemispheric sleep slow wave...

...Brian Bloodworth; Christopher D. Marshall SUMMARY The feeding kinematics of dwarf and pygmy sperm whales ( Kogia sima and K. breviceps ) and bottlenose dolphins Tursiops truncatus were characterized and compared incorporating the Ram-Suction Index (RSI). Mean RSI data support a suction feeding...

... of 248 Strouhal numbers were calculated for the captive odontocete cetaceans Tursiops truncatus , Pseudorca crassidens , Orcinus orca , Globicephala melaena , Lagenorhynchus obliquidens and Stenella frontalis . Although the average Strouhal number calculated for each species is within the accepted range...