... in lentic environments, but maintained buoyancy closer to neutral in lotic environments to optimise their locomotion. Swimming behaviour Gliding Buoyancy Physostome Data logger Accelerometry Some swimming animals exhibit undulating vertical movements, employing intermittent strokes...

...Katsufumi Sato To investigate the thermal characteristics of large reptiles living in water, temperature data were continuously recorded from 16 free-ranging loggerhead turtles, Caretta caretta , during internesting periods using data loggers. Core body temperatures were 0.7–1.7°C higher than...

... by translocating three seals and recording their heading direction continuously using GPS, and acceleration and geomagnetic data loggers while they returned to the colony. The seals first reached the coast and then proceeded to the colony by swimming along the coast. While underwater the animals exhibited...

[email protected]) 7 10 2010 © 2011. 2011 accelerometer blue-eyed shag data logger flight speed GPS tracking power curve Air and water have drastically different physical properties, and hence animals capable of moving in both media are expected to face evolutionary trade-offs...

... 2008 acceleration data logger flight foraging seabird Phalacrocorax aristotelis Since the deployment of the first time-depth recorder on a Weddell seal(Leptonychotes weddellii) in 1963, animal-borne loggers have become increasingly sophisticated and it is now possible to investigate...

...-density lipid and higher-density lean tissue) varies individually and seasonally,their buoyancy also fluctuates widely, and individuals would be expected to adjust their stroke patterns during dives accordingly. To test this prediction, we attached acceleration data loggers to four free-ranging Baikal...

.... To understand how poorly insulated diving endotherms survive the Arctic winter, we performed year-round recordings of heart rate,dive depth and abdominal temperature in male great cormorants using miniature data loggers. We also examined the body composition of individuals in the spring. Abdominal temperatures...

... ice holes. Data loggers were deployed on the penguins to monitor under water behavior. Nine instrumented penguins performed 386 leaps from the holes during experiments. The maximum swim speeds within 1 s before the exits through the holes correlated significantly with the above-water height...

... foraging. However, empirical data indicate that the body angles of some diving animals are rarely vertical during descent and ascent. Why do they choose shallower body angles that result in longer descent and ascent durations? To investigate this question, we attached acceleration data loggers to eight...

...Katsufumi Sato; Y. Naito; A. Kato; Y. Niizuma; Y. Watanuki; J. B. Charrassin; C.-A. Bost; Y. Handrich; Y. Le Maho SUMMARY Using a newly developed data logger to measure acceleration, we demonstrate that free-ranging king and Adélie penguins only beat their flippers substantially during the first...

... 2, France (e-mail: [email protected]) 12 9 2001 © The Company of Biologists Limited 2001 2001 diving double-crested cormorant Phalacrocorax auritus heart rate behaviour depth carotid body chemoreceptor blood gas data logger cardiac control mechanism...

... discarded at such times. We attached KS-PDT data loggers and lead weights with time-scheduled releasers to three female turtles as described above at Senri Beach during June and July 1996. The KS-PDT and time-scheduled weight releaser were attached to the centre front and centre rear part...

... information. We studied behavioural thermoregulation of 31 free-ranging chum salmon Oncorhynchus keta using micro data loggers off the Sanriku coast from early October to December. The surface water temperature was approximately 20 °C in early October and decreased to approximately 12 °C in December...

...-mail: [email protected] 17 02 1999 06 04 1999 © 1999 by Company of Biologists 1999 heart rate diving sea turtle leatherback turtle Dermochelys coriacea reptile data logger behavior The leatherback sea turtle (Dermochelys coriacea) is a pelagic reptile...

... to make repetitive, long-duration dives. Seven juvenile northern elephant seals were captured at Año Nuevo, CA, instrumented and translocated to release sites around Monterey Bay. Heart rate and dive depth were recorded using custom-designed data loggers and analogue tape monitors during the seals’ return...