... the extent to which blood and muscle oxygen stores varied as a function of age, body size and sex in the sexually dimorphic California sea lion, Zalophus californianus . We measured total body oxygen stores, including hematocrit, hemoglobin, MCHC, plasma volume, blood volume and muscle myoglobin in pups...

...Frank E. Fish; Jenifer Hurley; Daniel P. Costa SUMMARY Maneuverability is critical to the performance of fast-swimming marine mammals that use rapid turns to catch prey. Overhead video recordings were analyzed for two sea lions ( Zalophus californianus ) turning in the horizontal plane. Unpowered...

...Jenifer A. Hurley; Daniel P. Costa SUMMARY The metabolic rate (MR) of four adult California sea lions ( Zalophus californianus ), two males and two females, was quantified during trained submersion and stationing behavior in laboratory tanks. MR was measured, at rest and for single submersions...

... mental representation visuospatial information mirror-image discrimination California sea lion Zalophus californianus Mental representation is one of the central concepts of comparative cognition. Many researchers have tried to determine how objects in our environment are represented...

...P. J. Butler; A. J. Woakes; I. L. Boyd; S. Kanatous ABSTRACT Heart rate (f H ) and rate of oxygen uptake were measured in six subadult California sea lions Zalophus californianus while they were at rest and while they were swimming for 15 min at controlled speeds of up to 1.4ms” 1 and pulling loads...

...Steven D. Feldkamp ABSTRACT During swimming, the California sea lion, Zalophus californianus (Lesson), generates thrust forces solely by means of its pectoral flippers. This study examines the drag, energetic cost and efficiency associated with this method of locomotion. Sea lions are highly...