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Related Concept Videos

Predator-Prey Interactions02:39

Predator-Prey Interactions

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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
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Pharmacodynamic models are essential tools in understanding the relationship between drug concentrations and their effects on biological systems. By characterizing the dynamics of drug action, these models guide dose selection, optimize therapeutic efficacy, and inform the development of new drugs. Two major classes of pharmacodynamic models include direct effect and indirect response models.Direct Effect ModelsDirect effect models describe the immediate relationship between drug concentration...
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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Types of Selection01:46

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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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Updated: Feb 27, 2026

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
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Predicting Indirect Effects of Predator-Prey Interactions.

Sarah E Gilman1

  • 1The W.M. Keck Science Department, Claremont McKenna, Scripps and Pitzer Colleges, 925 N. Mills Avenue, Claremont, CA 91711, USA.

Integrative and Comparative Biology
|June 29, 2017
PubMed
Summary

Climate change indirectly impacts species interactions through physiological and behavioral shifts. Integrating mechanistic and ecological models is crucial for predicting these complex effects on ecosystems.

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Area of Science:

  • Ecology
  • Climate Change Biology
  • Physiological Ecology

Background:

  • Predicting climate change impacts on species and communities is a major biological challenge.
  • Indirect effects of climate change occur when altered species interactions affect other species' success.
  • Understanding these indirect effects is critical for conservation and ecological forecasting.

Purpose of the Study:

  • To review studies on the indirect effects of temperature on predator-prey interactions in rocky intertidal habitats.
  • To evaluate existing modeling approaches for predicting indirect ecological effects.
  • To identify challenges and suggest future directions for research on climate change indirect effects.

Main Methods:

  • Review of laboratory and field studies on temperature's indirect effects on predator-prey systems.
  • Analysis of mechanistic and ecological modeling approaches.
  • Categorization of indirect effects into metabolic rate, stress, and behavioral avoidance.

Main Results:

  • Temperature indirectly affects predator-prey interactions via physiological and behavioral changes.
  • Mechanistic models capture metabolic and stress effects; ecological models focus on behavioral avoidance.
  • No single model currently encompasses the full spectrum of indirect temperature effects.

Conclusions:

  • Species vulnerability to climate change depends on indirect effects, not just physiological sensitivity.
  • Integrating detailed physiological studies with broader ecological models is recommended.
  • More field studies examining natural climate variation are needed to improve model accuracy.