Efficiency Evaluation of Two Competing Foraging Modes under Different Conditions

@article{Scharf2006EfficiencyEO,
  title={Efficiency Evaluation of Two Competing Foraging Modes under Different Conditions},
  author={Inon Scharf and Einat Nulman and Ofer Ovadia and Amos Bouskila},
  journal={The American Naturalist},
  year={2006},
  volume={168},
  pages={350 - 357}
}
Various foraging modes are employed by predators in nature, ranging from ambush to active predation. Although the foraging mode may be limited by physiological constraints, other factors, such as prey behavior and distribution, may come into play. Using a simulation model, we tested to what extent the relative success of an ambush and an active predator changes as a function of the relative velocity and movement directionality of prey and active predator. In accordance with previous studies, we… 
Differential effects of structural complexity on predator foraging behavior
TLDR
This study emphasizes the benefits of measuring multiple predator behaviors when classifying predators to particular foraging modes, and examines the effects of simulated aquatic vegetation on multiple behaviors of 2 aquatic insect predators.
Sit-and-wait versus active-search hunting: A behavioral ecological model of optimal search mode.
Predator and prey activity levels jointly influence the outcome of long-term foraging bouts.
TLDR
The predator-prey locomotor crossover hypothesis, which predicts that active predators are more likely to encounter and consume prey with the opposing locomotor tendency, is tested using intraspecific behavioral variation in both a predator and prey species as predictors of foraging outcomes.
Evolution of mobility in predator-prey systems
We investigate the dynamics of a predator-prey system with the assumption that both prey and predators use game theory-based strategies to maximize their per capita population growth rates. The
Behavioural analysis of marine predator movements in relation to heterogeneous environments
TLDR
The resulting Lévy flight foraging (LFF) hypothesis makes testable predictions about marine predator search behaviour that can be addressed with the theoretical and empirical studies that form the basis of this thesis.
How Movement Properties Affect Prey Encounter Rates of Ambush versus Active Predators: A Comment on Scharf et al.
TLDR
It is suggested that movement‐dependent perception quality can determine the relative efficiency of these two foraging modes, and that the advantage of active predators diminishes as prey moves faster or more directionally.
Prey-predator interactions between two intraguild predators modulate their behavioral decisions
TLDR
The influence of intraguild predators in the behavioral decisions during daily activities of each other is highlighted, indicating adaptive behaviors in both prey and predator.
Predator hunting mode and habitat domain alter nonconsumptive effects in predator-prey interactions.
TLDR
It is found that cues from sit-and-pursue predators evoked stronger NCEs than cues from actively hunting predators, and predator characteristics may be used to predict how changing predator communities translate into changes in prey.
Foraging modality and plasticity in foraging traits determine the strength of competitive interactions among carnivorous plants, spiders and toads.
TLDR
Competition strength and the plasticity of foraging traits in a guild of generalist predators of arthropods with a range ofForaging modalities and traits are quantified to highlight the long-term importance of foraged modality and plasticity in foraging trait in determining the strength of competition within and across taxonomic kingdoms.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 24 REFERENCES
Ecological Consequences of Foraging Mode
TLDR
Foraging mode within one species varies with changes in food availability, and any general model of foraging velocity must be complex because foraging mode constrains numerous important aspects of ecology.
The Evolution of Search Modes: Ecological versus Phylogenetic Perspectives
  • G. Perry
  • Biology, Psychology
    The American Naturalist
  • 1999
TLDR
Expanding the database on lizard foraging behaviors and testing for the existence of modality in this much larger database did not support the validity of some previous analyses, and bimodality of search modes is rejected.
Search Modes of Birds and Lizards: Evidence for Alternative Movement Patterns
TLDR
It is demonstrated that move frequency is a good descriptor of search mode and the degree to which physiology and morphology limit a predator's ability to switch modes can be examined by comparing intraspecific move-frequency distributions against the interspecific distributions provided here.
Efficiency of area-concentrated searching behaviour in a continuous patchy environment*
Ecological Consequences of the Trade-Off between Growth and Mortality Rates Mediated by Foraging Activity
TLDR
These models develop models predicting adaptive responses for both foraging speed and proportion of time active when individual growth rate and mortality risk are functions of these variables, particularly the role of activity responses in competitive interactions and indirect effects and patterns of coexistence among competitors.
Shifts in foraging tactics of larval damselflies : effects of prey density
TLDR
Adjusting foraging tactics in response to prey availability may be adaptive for the predator, and may also contribute to density dependence in the predator prey relationship through effects on functional response.
Foraging Tactics of a Terrestrial Salamander: Choice of Diet in Structurally Simple Environments
TLDR
It is concluded that the salamanders attempted to compromise between maximizing net energy while foraging and minimizing the passage time of prey through the digestive tract, and it is suggested that foraging theories that ignore differential digestion rates of prey types can lead to false predictions about optimal choice of diet.
Patterns of foraging in labrid fishes
TLDR
Four major groups of foraging-microhabitat preferences were apparent: neutral foraging and positive selection towards aggregates, dead coral heads, or live coral, with species having a directed foraging mode most frequently selecting more spatially discrete microhabitats.
Encounter Probabilities and Community Structure in Zooplankton: a Mathematical Model
TLDR
Of the variables used (population densities, speeds of the two animal species, and encounter radius) the encounter radius has the greatest influence on the encounter probabilities.
...
1
2
3
...