Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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.For one, natural selection can only act upon existing genetic variation. Hypothetically, redtusks may enhance elephant survival by deterring ivory-seeking poachers. However, if there are no gene variants—or alleles—for redtusks, natural selection cannot increase the prevalence of...
Evolutionary Processes in Microbes01:26

Evolutionary Processes in Microbes

Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
Genetic Drift03:33

Genetic Drift

Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.Life is not fair. A deer grazing contentedly in a field can have her meal cut tragically short by a bolt of lightning. If the doomed doe is one of only three in the population, 1/3 of the population’s gene pool is lost. Random events like this can...
Conservation of Small Populations02:04

Conservation of Small Populations

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less likely to...
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
Evolutionary Psychology01:20

Evolutionary Psychology

Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the human psyche...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Signatures of gene transfer in the parallel evolution of osmotrophic specialization in eukaryotes.

Nature ecology & evolution·2026
Same author

Phylogenomic mixture models outperform homogeneous and partitioned models.

Molecular biology and evolution·2026
Same author

Gene copy-number features generalize better than SNPs for antimicrobial resistance prediction in Staphylococcus aureus.

npj antimicrobials and resistance·2025
Same author

Dated gene duplications elucidate the evolutionary assembly of eukaryotes.

Nature·2025
Same author

Convergent genomic responses of human gut bacteria to variations in industrialization.

bioRxiv : the preprint server for biology·2025
Same author

A timetree of Fungi dated with fossils and horizontal gene transfers.

Nature ecology & evolution·2025

Related Experiment Video

Updated: Jun 29, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Evolutionary games on minimally structured populations.

Gergely J Szöllosi1, Imre Derényi

  • 1Biological Physics Department, Eötvös University, Budapest, Hungary. ssolo@angel.elte.hu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 15, 2008
PubMed
Summary

This study introduces a minimal population structure model to understand evolutionary game dynamics. It reveals how hierarchical interactions can sustain cooperation and biodiversity in various games.

More Related Videos

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

Related Experiment Videos

Last Updated: Jun 29, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
20:36

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

Area of Science:

  • Evolutionary Game Theory
  • Population Dynamics
  • Complex Systems

Background:

  • Population structure significantly impacts evolutionary game dynamics.
  • Existing models are often sensitive to specific network topologies and interaction rules.

Purpose of the Study:

  • To introduce a minimal, two-level hierarchical population structure model.
  • To identify generalizable effects of spatial structure independent of detailed topology.
  • To analyze evolutionary dynamics using mean-field approximations.

Main Methods:

  • Developed a minimal population structure with two hierarchical levels of interaction.
  • Employed two successive mean-field approximations to derive system dynamics.
  • Characterized population structure using two key parameters: local population size and mixing strength.

Main Results:

  • Demonstrated a continuous transition to cooperation dominance based on benefit-cost ratio and local population size.
  • Uncovered a mechanism in the repeated prisoner's dilemma where defector influx sustains cooperation.
  • Reproduced phenomena like biodiversity maintenance and global oscillations in evolutionary games.

Conclusions:

  • The hierarchical model provides generalizable insights into spatial structure effects on evolutionary games.
  • The model successfully explains cooperation, biodiversity, and oscillations observed in other complex systems.
  • This approach offers a simplified yet powerful framework for studying evolutionary dynamics.