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Related Concept Videos

Frequency-dependent Selection01:21

Frequency-dependent Selection

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.
Mate Choice01:20

Mate Choice

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.
Types of Selection01:46

Types of Selection

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...
Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Limits to Natural Selection01:38

Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
Criticisms of the Evolutionary Perspective01:23

Criticisms of the Evolutionary Perspective

In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
Evolutionary psychology provides one explanation for these findings, suggesting...

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Related Experiment Video

Updated: May 21, 2026

Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies
10:50

Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies

Published on: November 8, 2018

Biased learning affects mate choice in a butterfly.

Erica L Westerman1, Andrea Hodgins-Davis, April Dinwiddie

  • 1Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA. erica.westerman@yale.edu

Proceedings of the National Academy of Sciences of the United States of America
|June 13, 2012
PubMed
Summary
This summary is machine-generated.

Butterflies can learn mate preferences quickly. Female butterflies learned to prefer males with enhanced ornaments after a brief exposure, demonstrating biased learning in sexual selection.

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Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies
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Exploring Life History Choices: Using Temperature and Substrate Type as Interacting Factors for Blowfly Larval and Female Preferences
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Exploring Life History Choices: Using Temperature and Substrate Type as Interacting Factors for Blowfly Larval and Female Preferences

Published on: November 17, 2023

Area of Science:

  • Evolutionary Biology
  • Animal Behavior
  • Sexual Selection

Background:

  • Mate preference learning is crucial for speciation across many animal groups.
  • The diverse mechanisms underlying mate preference learning are not fully understood.
  • Understanding these mechanisms is key to explaining the evolution of sexual ornamentation.

Purpose of the Study:

  • To investigate the mechanisms of mate-preference learning in the butterfly Bicyclus anynana.
  • To determine if biased learning contributes to directional sexual selection.
  • To explore how social interactions influence the development of mate preferences.

Main Methods:

  • Exposing female Bicyclus anynana to males with varying levels of wing ornamentation (wild-type, enhanced, reduced).
  • Observing mating preferences of naïve females and females exposed to different male types.
  • Analyzing changes in mating behavior following brief social exposure.

Main Results:

  • Naïve females preferred wild-type males over those with enhanced ornamentation.
  • Females exposed to enhanced males subsequently preferred them significantly more.
  • Exposure to reduced ornamentation did not lead to a learned preference for drab males.

Conclusions:

  • Female butterflies can rapidly alter their mate preferences based on single social encounters.
  • A bias in learning, favoring enhanced ornaments, can drive directional sexual selection.
  • Biased learning mechanisms likely play a significant role in the evolution of visual sexual traits.