Open AccessJournal Article
Predator facilitation: the combined effect of snakes and owls on the foraging behavior of gerbils
TLDR
Gerbillus allenbyi and G. pyramidum showed a significant light x snake x owl interaction indicative of predator facilitation: the gerbils avoided the open entirely when faced with lights and owls, but increased their exposure to owls if vipers were also present.Abstract:
Predator facilitation occurs when prey face two or more predator species and cannot forage and be safe from both types of predators simultaneously: avoiding one predator necessarily leads to increased exposure to the other Two species of coexisting gerbils 0Gerbillus allenbyi and G pyramidum) which coexist in sandy habitats in the Negev Desert, Israel may face such conflicting demands from vipers and owls We tested this by subjecting the gerbils to the presence of snakes and owls in a factorial experiment carried out in a large aviary We also manipulated illumination and microhabitat, two factors which affect the risk of predation Gerbils responded to owls by reducing foraging activity, avoiding the open microhabitat, and exploiting resource patches less intensively Also, G pyramidum showed a significant light x snake x owl interaction indicative of predator facilitation: the gerbils avoided the open entirely when faced with lights and owls, but increased their exposure to owls if vipers were also present The fangs of the snakes are driving the gerbils into the talons of the owls Such facilitation may affect the foraging behavior, species interactions, and community structure of the gerbilsread more
Citations
More filters
Book
Evolutionary games and population dynamics
Josef Hofbauer,Karl Sigmund +1 more
TL;DR: In this book the authors investigate the nonlinear dynamics of the self-regulation of social and economic behavior, and of the closely related interactions among species in ecological communities.
Journal ArticleDOI
Emergent impacts of multiple predators on prey
TL;DR: Two main types of emergent effect-risk reduction caused by predator-predator interactions and risk enhancement caused by conflicting prey responses to multiple predators are suggested.
Book ChapterDOI
Stress and Decision Making under the Risk of Predation: Recent Developments from Behavioral, Reproductive, and Ecological Perspectives
TL;DR: This chapter reviews the present empirical and theoretical work on antipredatory decision making and suggests that attention is needed for further work on the effects that predator and prey have on the other's behavioral decisions.
Journal ArticleDOI
Ecosystem Services Provided by Birds
TL;DR: The goals for this review are to lay the groundwork on supporting services to facilitate future efforts to estimate their economic value, to highlight gaps in knowledge, and to point to future directions for additional research.
Journal ArticleDOI
The Ecology of Fear: Optimal Foraging, Game Theory, and Trophic Interactions
TL;DR: This work extends foraging theory to consider a predator-prey game of stealth and fear and then embeds this game into the modeling of predator- prey population dynamics, which identifies the endpoints of a continuum of N-driven (population size) versus μ- driven (fear) systems.
References
More filters
Journal ArticleDOI
Patch use as an indicator of habitat preference, predation risk, and competition
TL;DR: In this paper, a technique for using patch giving up densities to investigate habitat preferences, predation risk, and interspecific competitive relationships is theoretically analyzed and empirically investigated, and the technique was applied to a community of four Arizonan granivorous rodents (Perognathus amplus, Dipodomys merriami, Ammospermophilus harrisii, and Spermophilia tereticaudus).
Journal ArticleDOI
Ecological Implications of Resource Depression
TL;DR: Depression phenomena are familiar to most field ecologists but are seldom incorporated into formal ecological theory, so here the possibility of enhancement of availability, as well as competition, is concerned.
Journal ArticleDOI
Resource edibility and the effects of predators and productivity on the outcome of trophic interactions
TL;DR: A simple model is used to examine interactions among consumers and two types of resources that differ in edibility to predict the abundances of all three populations and confirms that the effects of predators and nutrients on consumers and resources predicted by the model differ when the consumer assemblage is dominated by a generalist herbivore.
Journal ArticleDOI
Behavioral and Life‐Historical Responses of Larval American Toads to an Odonate Predator
David K. Skelly,Earl E. Werner +1 more
TL;DR: The data suggest that the metamorphic response may be mediated primarily through the behavioral effects on growth, which then affect size at metamorphosis, consistent with theories of amphibian metamor- phosis that predict that size at meetamorphosis should depend on the relation between growth opportunities and risk of mortality in the larval and adult habitats.
Journal ArticleDOI
Predator-prey interactions among fish and larval amphibians: use of chemical cues to detect predatory fish
TL;DR: Gravitational flow-through systems were used to determine whether larvae of two-lined salamanders, Eurycea bislineata, and Cope's grey treefrog, Hyla chrysoscelis, use chemical cues to detect predatory fish, and suggest that amphibian larvaeUse chemical cues in their natural habitats to minimize predation risk from fish.
Related Papers (5)
Behavioral decisions made under the risk of predation: a review and prospectus
Steven L. Lima,Lawrence M. Dill +1 more