Mechanisms of individual variation in large herbivore diets: Roles of spatial heterogeneity and state-dependent foraging.

ABSTRACT: Many populations of consumers consist of relatively specialized individuals that eat only a subset of the foods consumed by the population at large. Although the ecological significance of individual-level diet variation is recognized, such variation is difficult to document, and its underlying mechanisms are poorly understood. Optimal foraging theory provides a useful framework for predicting how individuals might select different diets, positing that animals balance the "opportunity cost" of stopping to eat an available food item against the cost of searching for something more nutritious; diet composition should be contingent on the distribution of food, and individual foragers should be more selective when they have greater energy reserves to invest in searching for high-quality foods.

SUBMITTER: Walker RH 

PROVIDER: S-EPMC10078531 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature