Foraging Theory

  title={Foraging Theory},
  author={David W. Stephens and John Richard Krebs},
Food preference and nutrient composition in captive bonobos (Pan paniscus)
The idea that food preference among bonobos follows the pattern of the other great apes and that the shared frugivorous diets may be the result of a common preference for the same nutrients is supported.
Inter and intra specific interactions in marine habitat selection of two sympatric seal species in Northeast Atlantic
La plasticite comportementale et les interactions entre organismes sont connues pour avoir une influence sur l’utilisation de l’espace, notamment la selection de l’habitat de chasse. Dans
What Are the “Costs and Benefits” of Meat-Eating in Human Evolution? The Challenging Contribution of Behavioral Ecology to Archeology
Despite the omnivorous diet of most human populations, meat foraging gradually increased during the Paleolithic, in parallel with the development of hunting capacities. There is evidence of regular
Cost-Benefit Trade-Offs of Aquatic Resource Exploitation in the Context of Hominin Evolution
It is proposed that aquatic resource consumption in extant primates can be interpreted as a highly site-specific behavioral expression of a generic adaptive foraging decision-making process, emerging in sites at which the local cost-benefit trade-offs contextually favor aquatic over terrestrial foods.
Pacific walrus diet across 4000 years of changing sea ice conditions
Abstract Declining sea ice is expected to change the Arctic's physical and biological systems in ways that are difficult to predict. This study used stable isotope compositions (δ13C and δ15N) of
Fine‐scale foraging behavior reveals differences in the functional roles of herbivorous reef fishes
It is found that movements and space use range from low frequency foraging bouts separated by short distances and tight turns across a small area, to high frequency, far‐ranging forays separated by wide sweeping turns, suggesting that species assemblages may be considerably less redundant than previously thought.
Control over patch encounters changes foraging behaviour
When participants could choose sites, they visited fast-replenishing sites more often, left sites at higher levels of reward, and achieved a higher net reward rate, suggesting that unattended sites influence leave decisions when sites can be revisited.
How to Model Optimal Group Size in Social Carnivores
It is shown that if foraging is limited by constraints on energy expenditure, then the optimal group size can be different from the size that maximizes the net rate while hunting, and two novel approaches are suggested to consider the optimal hunting group size given a fixed group size and how the presence of dependent young may affect foraging behavior.
Foraging preferences of honeybees (Apis melliferaL.) analysed by pollen metabarcoding along an urban-rural gradient, across seasons
In a context of global biodiversity lost, recent studies support that well-managed cities could improve the preservation of Hymenoptera and thus provide hot spots for pollination services. Therefore,
Food Quantity Discrimination in Angelfish (Pterophyllum scalare): The Role of Number, Density, Size and Area Occupied by the Food Items
It is concluded that food item number, density, and size may not be considered individually by angelfish, but instead, the fish respond to all these factors attempting to maximize energy gained from eating the food while minimizing energy expenditure collecting and/or protecting the food.