The turnover rates and oxidation rates of plasma glucose, lactate, and free fatty acids (FFA)
were measured in three harbor seals (average mass= 40 kg) at rest or during voluntary …

Intraspecific variability in foraging behavior has been documented across a range of
taxonomic groups, yet the energetic consequences of this variation are not well understood …

Although energetics is fundamental to animal ecology, traditional methods of determining
metabolic rate are neither direct nor instantaneous. Recently, continuous blood oxygen (O2) …

The cost of swimming is a key component in the energy budgets of marine mammals.
Unfortunately, data to derive predictive allometric equations are limited, and estimates exist …

A leading theory for the cause of the decline of Steller sea lions is nutritional stress, which
led to chronic high juvenile mortality and possibly episodic adult mortality. Nutritional stress …

Developmental increases in dive capacity have been reported in numerous species of air-
breathing marine vertebrates. Previous studies in juvenile phocid seals suggest that …

Pinnipeds (seals and sea lions) have an elevated mitochondrial volume density [VV (mt)]
and elevated citrate synthase (CS) andβ-hydroxyacyl-CoA dehydrogenase (HOAD) activities …

Heart rate and peripheral blood flow distribution are the primary determinants of the rate and
pattern of oxygen store utilisation and ultimately breath-hold duration in marine endotherms …

When studying diving behaviour, it is important to know whether a species is operating at or
close to its maximum physiological capacity, because if it is, it will be less capable of …

Heart rate (f H), abdominal temperature (T ab) and diving depth were measured in thirteen
free-ranging breeding female macaroni penguins. Measurement of these variables allowed …