body condition
- No short-term physiological costs of offspring care in a cooperatively breeding bird
Summary: Superb starling parental and alloparental care does not result in a short-term physiological cost. Instead, glucocorticoid hormones during incubation shape investment in offspring care behaviours.
- High diving metabolic rate indicated by high-speed transit to depth in negatively buoyant long-finned pilot whales
Highlighted Article: High diving metabolic rate indicated by high-speed transit to depth and negative buoyancy of long-finned pilot whales implies a costly diving strategy compared with that in other deep-diving toothed whales.
- Monoaminergic integration of diet and social signals in the brains of juvenile spadefoot toads
Summary: Early effects of diet modify monoamine levels and the monoamine response to social signals in the brain of plains spadefoot toads, a species in which diet and body condition influence social preferences.
- Shoaling reduces metabolic rate in a gregarious coral reef fish species
Highlighted Article: Group living reduces metabolic rate in a shoaling damselfish species, while isolation reduces body condition. Social isolation due to environmental disturbance may therefore have physiological consequences for gregarious species.
- Body density and diving gas volume of the northern bottlenose whale (Hyperoodon ampullatus)
Summary: Body density and diving gas volume, two important but poorly understood physiological characteristics of beaked whales, are revealed through analysis of hydrodynamic performance during glides.
- Seasonal and sex differences in responsiveness to adrenocorticotropic hormone contribute to stress response plasticity in red-sided garter snakes (Thamnophis sirtalis parietalis)
Summary: The adrenal glucocorticoid response to ACTH varies with season and sex in garter snakes; decreased responsiveness to ACTH partly explains reduced stress sensitivity in males during the spring breeding season.
- Fishing for drifts: detecting buoyancy changes of a top marine predator using a step-wise filtering method
Summary: A step-wise filtering method to detect buoyancy changes in drift diving pinnipeds.