The question of how individuals acquire and allocate resources to maximize fitness is
central in evolutionary ecology. Basic information on prey selection, search effort, and …

Reliable estimates of field metabolic rates (FMRs) in wild animals are essential for
quantifying their ecological roles, as well as for evaluating fitness consequences of …

Understanding the mechanisms that drive prey selection is a major challenge in foraging
ecology. Most studies of foraging strategies have focused on behavioural costs, and have …

Establishing where and when predators forage is essential to understanding trophic
interactions, yet foraging behavior remains poorly understood in large marine carnivores …

We describe the life history of harbor porpoises in the Gulf of Maine by examining 239
animals killed in gill net fisheries and comparing these findings with the results of previous …

Harbour porpoises Phocoena phocoena are common in continental shelf areas of the North
Atlantic, but little information is available on their occurrence outside coastal areas. In this …

Short-term bursts of prey availability occur in many ecosystems and have potential important
consequences for both predator biology and ecosystem function. Examples of prey 'pulses' …

Predators face decisions about which prey to include in their diet in order to maximize
fitness. The foraging tactics used to capture prey and the resulting profitability of prey …

Stomach contents of 112 bycaught harbor porpoises (Phocoena phocoena) collected
between 1989 and 1996 in the Kattegat and Skagerrak seas were analyzed to describe diet …

Knowledge of the diet of marine mammals is fundamental to understanding their role in
marine ecosystems and response to environmental change. Recently, animal-borne video …