The assumed “constancy” of fat-free body mass hydration is a cornerstone in the body-
composition research field. Hydration, the observed ratio of total body water to fat-free body …

The substrate demands of lactation must be met by increased dietary intake or by
mobilization of nutrients from tissues. The capacity of animals to rely on stored nutrients …

The new edition of Human Body Composition is the most complete text in the burgeoning
field of body composition research. The book covers the full range of methods to assess …

Abstract 1 In order to estimate the effect of weaning mass and body condition on the post‐
weaning survival of grey seal pups from the Isle of May, Scotland in 1998 during their first …

Species of the suborder Pinnipedia belong to three families (Phocidae-true seals;
Otariidaefur seals and sea lions; and Odobenidae-walruses) and are distinctive~ mong …

In phocid species in which females fast throughout lactation, maternal energy reserves at
parturition must support lactation. Thus, differences in body size and energy stores may …

Elephant seals regularly perform dives during which they spend a large proportion of time
drifting passively through the water column. The rate of vertical change in depth during …

In true seals (family Phocidae), the large energetic costs of lactation are supported primarily
by mobilization of stored fat. We studied the magnitude of fat and energy depletion in …

Integrating behavior and physiology is critical to formulating new hypotheses on the
evolution of animal life-history strategies. Migratory capital breeders acquire most of the …

Summary 1 Sex differences in the timing and magnitude of energy expenditure for
reproduction may result in sex‐specific seasonal patterns of energy storage and utilization …