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Related Concept Videos

Mate Choice01:20

Mate Choice

8.3K
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.
8.3K
Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

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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,...
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Relationship Formation02:12

Relationship Formation

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What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
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Inclusive Fitness00:57

Inclusive Fitness

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Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
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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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Factors Influencing Attraction III: Similarity01:23

Factors Influencing Attraction III: Similarity

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The similarity hypothesis suggests that individuals are more likely to form relationships with others who share similar attitudes, beliefs, values, and interests. This concept has been widely studied in social psychology, demonstrating that perceived similarity fosters interpersonal attraction. In an experiment supporting this hypothesis, participants were presented with fabricated information indicating that strangers held attitudes similar to their own. The results showed that participants...
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Related Experiment Video

Updated: May 1, 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

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Community composition affects the shape of mate response functions.

Laurel B Symes1

  • 1Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, 03755. Laurel.Symes@dartmouth.edu.

Evolution; International Journal of Organic Evolution
|April 3, 2014
PubMed
Summary

Female tree crickets

Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Speciation research

Background:

  • Mate preferences are crucial for reproductive isolation and speciation.
  • Heterospecific interference can impose fitness costs, shaping female preferences towards conspecific traits.
  • Unbounded male traits may relax selection against responses to extreme values.

Purpose of the Study:

  • To investigate how the presence of related species (heterospecifics) influences the shape of female mate preference functions.
  • To understand the role of signal extremity in shaping female phonotaxis and potential for hybridization.

Main Methods:

  • Presenting female Oecanthus tree crickets with synthetic male calls across a spectrum of trait values.
  • Measuring female phonotaxis (movement towards sound) to construct detailed female response functions.
Keywords:
Character displacementmate choicemate recognitionreproductive interferencesexual selection

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Related Experiment Videos

Last Updated: May 1, 2026

Using the FishSim Animation Toolchain to Investigate Fish Behavior: A Case Study on Mate-Choice Copying In Sailfin Mollies
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  • Comparing female responses to conspecific male signals and signals from other species.

    • Main Results:

    • Females of the species with the fastest pulse rates responded to signals faster than their own males.
    • Species with intermediate and slower pulse rates showed no significant preference for signals outside their males' range.
    • Extreme signal traits in a community may lead to broader female responsiveness.

    Conclusions:

    • Species with the most extreme signals exhibit broader mate preferences, increasing hybridization risk during secondary contact.
    • Interactions between mate recognition systems and sexual selection dynamics are revealed.
    • The evolutionary trajectory of mate preferences is influenced by community-level signal interactions.