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

Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.3K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.3K
Genetic Drift03:33

Genetic Drift

39.7K
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.
39.7K
Distribution and Dispersion00:54

Distribution and Dispersion

21.7K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
21.7K
Gene Flow02:39

Gene Flow

35.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.0K
Types of Selection01:46

Types of Selection

40.4K
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...
40.4K
What is Population Genetics?01:25

What is Population Genetics?

57.9K
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.
57.9K

You might also read

Related Articles

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

Sort by
Same author

<i>In vivo</i> tracking of CAR-T cells in tumors <i>via</i> nanobubble-based contrast enhanced ultrasound.

Nanoscale horizons·2026
Same author

Modeling and inferring metacommunity dynamics with Maximum Caliber.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

In vivo tracking of CAR-T cells in tumors via nanobubble-based contrast enhanced ultrasound.

bioRxiv : the preprint server for biology·2025
Same author

Treatment of non-Hodgkin lymphoma with point-of-care manufactured CAR T cells: a dual institution, phase 1 trial.

EClinicalMedicine·2025
Same author

Chimeric Antigen Receptor (CAR)-T Cell Therapy for Non-Hodgkin's Lymphoma.

Pathogens & immunity·2024
Same author

A theoretical perspective on Waddington's genetic assimilation experiments.

Proceedings of the National Academy of Sciences of the United States of America·2023

Related Experiment Video

Updated: Jun 24, 2025

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

957

Dynamic Trait Distribution as a Source for Shifts in Interaction Strength and Population Density.

Zachary Jackson, BingKan Xue

    The American Naturalist
    |June 10, 2024
    PubMed
    Summary

    Predators can unexpectedly increase prey populations by dynamically shifting prey trait distributions through mechanisms like plasticity and differential growth. This challenges traditional models by showing trait variation impacts species interactions.

    Keywords:
    healthy herdsinteraction modificationsintraspecific variationspecies interactionstrait-mediated indirect interactions

    More Related Videos

    Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes
    08:43

    Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes

    Published on: August 29, 2016

    10.3K
    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

    8.7K

    Related Experiment Videos

    Last Updated: Jun 24, 2025

    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

    957
    Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes
    08:43

    Boldness, Aggression, and Shoaling Assays for Zebrafish Behavioral Syndromes

    Published on: August 29, 2016

    10.3K
    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

    8.7K

    Area of Science:

    • Ecology
    • Evolutionary Biology
    • Population Dynamics

    Background:

    • Intraspecific trait variation is crucial for species interactions and diversity.
    • Eco-evolutionary models often assume heritable traits and generational changes.
    • Nonheritable traits (e.g., behavior) can cause trait-mediated indirect effects.

    Purpose of the Study:

    • To investigate the dynamics of trait distributions within a population on short ecological timescales.
    • To explore how mechanisms like phenotypic plasticity, differential growth, and selective predation influence trait distribution shifts.
    • To analyze the impact of dynamic trait distribution on predator-prey interactions and population outcomes.

    Main Methods:

    • Developed a predator-prey model explicitly tracking the prey's trait distribution.
    • Incorporated mechanisms of phenotypic plasticity, differential growth, and predator selectivity.
    • Analyzed how predator density and trait effects alter prey trait distribution dynamics.

    Main Results:

    • Dynamic shifts in prey trait distribution can significantly modify interaction strengths.
    • Predator presence can lead to unexpected consequences, including prey population increases.
    • Emergent promotion of prey by predators was observed, contrary to typical predator-prey dynamics.

    Conclusions:

    • Considering the full trait distribution, not just average traits, is essential for understanding ecological interactions.
    • Short-term ecological processes can drive rapid changes in trait distributions, impacting population dynamics.
    • Dynamic trait variation offers new perspectives on species interactions, potentially revealing novel ecological phenomena.