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Related Concept Videos

Types of Selection01:46

Types of Selection

42.7K
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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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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Ecological Niches02:02

Ecological Niches

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All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
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Conservation of Declining Populations02:07

Conservation of Declining Populations

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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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Mate Choice01:20

Mate Choice

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Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
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Frequency-dependent Selection01:21

Frequency-dependent Selection

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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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Related Experiment Video

Updated: Oct 18, 2025

Operant Conditioning Task to Measure Song Preference in Zebra Finches
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Generalist bird exhibits site-dependent resource selection.

Samantha M Cady1, Craig A Davis1, Samuel D Fuhlendorf1

  • 1Department of Natural Resource Ecology and Management Oklahoma State University Stillwater OK USA.

Ecology and Evolution
|October 1, 2021
PubMed
Summary
This summary is machine-generated.

Resource selection by northern bobwhite varies even between nearby sites. Habitat management recommendations should consider local differences in resource availability and arrangement, not just generalized patterns.

Keywords:
birdsfunctional responsegeneralist speciesresource selectionscalewildlife managementwoody cover

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Area of Science:

  • Ecology
  • Wildlife Biology
  • Conservation Science

Background:

  • Resource selection quantifies habitat use, crucial for species management and ecological understanding.
  • Study sites can vary in resource availability and arrangement, potentially influencing selection patterns.

Purpose of the Study:

  • To determine if nearby, similar sites yield different resource selection results for the generalist northern bobwhite (Colinus virginianus).
  • To assess the impact of site-specific factors on habitat selection patterns.

Main Methods:

  • Utilized 5 years of telemetry data and novel land cover data from two proximate sites in North American semi-arid prairies.
  • Employed generalized linear mixed models and information-theoretic model comparison to analyze resource selection.

Main Results:

  • Northern bobwhite resource selection patterns were site-dependent, even at geographically close locations.
  • The selection (or avoidance) of shrub and tree cover varied significantly between the two study sites.
  • Spatial scales of selection differed by nearly an order of magnitude across cover types.

Conclusions:

  • A single-site approach may oversimplify resource selection, even for extensively studied generalist species.
  • Habitat management recommendations should account for local variations in resource availability, arrangement, and scale.
  • Extrapolating management strategies beyond data collection areas requires careful consideration of site-specific ecological differences.