... the genetic and biochemical ability to perform ketogenesis. Dolphin Fasting Ketogenic diet National Institutes of Health http://dx.doi.org/10.13039/100000002 R01DK120530 R01DK116746 The consumption of a ketogenic, carbohydrate-limited diet requires adaptations to processes...

... could not be traced equally. References Au , W. W. L. ( 1993 ). The Sonar of Dolphins . New York : Springer-Verlag . Au , W. W. L. and Hastings , M. C. ( 2008 ). Principles of Marine Bioacoustics , 677 pp . New York : Springer-Science . Cooper , N. P...

... to measure the energetic cost of producing a swimming stroke during different levels of exercise in bottlenose dolphins ( Tursiops truncatus ). These data were then used to model the energetic cost of high-speed escape responses by other odontocetes ranging in mass from 42 to 2738 kg. The total cost per...

...Sam Ridgway; Dianna Samuelson Dibble; Kaitlin Van Alstyne; DruAnn Price ABSTRACT Dolphins fishing alone in open waters may whistle without interrupting their sonar clicks as they find and eat or reject fish. Our study is the first to match sound and video from the dolphin with sound and video from...

...Paul E. Nachtigall; Alexander Ya Supin ABSTRACT The frequency specificity of conditioned dampening of hearing, when a loud sound is preceded by a warning sound, was investigated in a bottlenose dolphin. The loud sounds were 5 s tones of 16, 22.5 or 32 kHz, sound pressure level of 165 dB root mean...

...Frank E. Fish; Paul Legac; Terrie M. Williams; Timothy Wei Attempts to measure the propulsive forces produced by swimming dolphins have been limited. Previous uses of computational hydrodynamic models and gliding experiments have provided estimates of thrust production by dolphins, but these were...

... toothed whale dolphin sound production click echolocation Toothed whales employ a rich repertoire of clicks and tonal sounds for echolocation and communication. These sounds are not produced in the larynx, like in terrestrial mammals, but rather in a complex nasal system of air sacs...

... because activity should promote an elevation in heart rate ( f H ) to support increased metabolic demands. To assess the effect of the interaction between the diving response and underwater activity on f H , we integrated interbeat f H with behavioral observations of adult bottlenose dolphins diving...

... dolphin and a harbor porpoise were each imaged post mortem under pressure using a radiolucent, fiberglass, water-filled pressure vessel rated to a depth equivalent of 170 m. The vessel was scanned using computed tomography (CT), and supported by a rail and counterweighted carriage magnetically linked...

...T. Akamatsu; D. Wang; K. Wang; S. Li; S. Dong SUMMARY Dolphins and porpoises have excellent biosonar ability, which they use for navigation, ranging and foraging. However, the role of biosonar in free-ranging small cetaceans has not been fully investigated. The biosonar behaviour and body movements...

... during repetitive breath-hold diving is sufficient for asymptomatic VGE formation in odontocetes, a bottlenose dolphin ( Tursiops truncatus Montagu) was trained to perform 10–12 serial dives with 60 s surface intervals to depths of 30, 50, 70 or 100 m. The dolphin remained at the bottom depth for 90 s...

...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...

...S. A. Etnier; W. A. McLellan; J. Blum; D. A. Pabst SUMMARY Late-term fetal bottlenose dolphins ( Tursiops truncatus ) are bent ventrolaterally en utero , requiring extreme flexibility of the axial skeleton and associated soft tissues. At birth, neonatal dolphins must immediately swim to the surface...

...P. E. Nachtigall; T. A. Mooney; K. A. Taylor; L. A. Miller; M. H. Rasmussen; T. Akamatsu; J. Teilmann; M. Linnenschmidt; G. A. Vikingsson SUMMARY This is the first report of an underwater audiogram from a dolphin in a capture-and-release scenario. Two bow-riding white-beaked dolphins Lagenorhynchus...

...) of independently swimming bottlenose dolphins ( Tursiops truncatus ) demonstrated that swimming capabilities are extremely limited in calves. Mean and maximum swim speeds of 0-1-month-old calves were only 37%and 52% of that for adults, respectively, and levels similar to those of adults were not achieved until one...

...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...

...Sam Ridgway; Dorian Houser; James Finneran; Don Carder; Mandy Keogh; William Van Bonn; Cynthia Smith; Miriam Scadeng; David Dubowitz; Robert Mattrey; Carl Hoh SUMMARY This report documents the first use of magnetic resonance images (MRIs) of living dolphins to register functional brain scans...

...Robin C. Dunkin; William A. McLellan; James E. Blum; D. Ann Pabst SUMMARY In Atlantic bottlenose dolphins Tursiops truncatus , both the thickness and lipid content of blubber vary across ontogeny and across individuals of differing reproductive and nutritional status. This study investigates how...

... and dolphins. Rosen( 1959 , 1961 , 1963 ) hypothesized that some of the rotational energy surrounding the undulating motion of a fish or dolphin could be regained for propulsion through proper synchronization of the animal's body to the vortex flow. Rosen( 1959 , 1961 ) further deduced an equation for fish...