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

Effects of feedback01:24

Effects of feedback

478
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
478
Evolutionary Psychology01:20

Evolutionary Psychology

198
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...
198
Cell Signaling Feedback Loops01:07

Cell Signaling Feedback Loops

6.2K
Positive and negative feedback loops are crucial for regulating biological signaling systems. These feedback loops are processes that connect output signals to their inputs.
Negative feedback loops
Most signaling systems have negative feedback loops that can perform different functions such as output limiter, and adaptation.
Output limiter
Upon receiving an input signal, the cellular response rapidly increases until a threshold is reached. Beyond this threshold, a negative feedback loop...
6.2K
Positive and Negative Feedback Loops01:18

Positive and Negative Feedback Loops

13.9K
Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires  maintaining an internal dynamic equilibrium:
13.9K
Criticisms of the Evolutionary Perspective01:23

Criticisms of the Evolutionary Perspective

79
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...
79
Genetic Drift03:33

Genetic Drift

38.9K
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.
38.9K

You might also read

Related Articles

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

Sort by
Same author

Identifying the social context of single- and mixed-species group formation in large African herbivores.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2023
Same author

Indirect genetic effects for social network structure in <i>Drosophila melanogaster</i>.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences·2023
Same author

Comparing single- and mixed-species groups in fruit flies: differences in group dynamics, but not group formation.

The Journal of heredity·2021
Same author

Anticipated effects of abiotic environmental change on intraspecific social interactions.

Biological reviews of the Cambridge Philosophical Society·2021
Same author

Selection on heritable social network positions is context-dependent in Drosophila melanogaster.

Nature communications·2021
Same author

Does Divergence in Habitat Breadth Associate with Species Differences in Decision Making in <i>Drosophila Sechellia</i> and <i>Drosophila Simulans</i>?

Genes·2020
Same journal

In This Issue.

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

Long-term cultural continuity across the Neanderthal-modern human sequence at Üçağızlı II Cave, northern Levant.

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

Dolphins use names to remember whom to avoid.

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

Retraction for Shaked and Frenkel, Curiouser and curiouser: Meningeal lymphoid structures in the aging brain.

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

Small but mighty: The outsized role of small water bodies in the global carbon cycle.

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

Functional traits produce conditional outcomes in different community contexts.

Proceedings of the National Academy of Sciences of the United States of America·2026
See all related articles

Related Experiment Video

Updated: May 12, 2025

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

3.1K

Evolutionary feedbacks for Drosophila aggression revealed through experimental evolution.

Anna R Girardeau1, Grace E Enochs1, Julia B Saltz1

  • 1Department of Biosciences, Rice University, Houston, TX 77005.

Proceedings of the National Academy of Sciences of the United States of America
|April 24, 2025
PubMed
Summary
This summary is machine-generated.

Evolutionary feedbacks, where one generation

Keywords:
Drosophila melanogasteraggressionevolutionary feedbacksexperimental evolutionindirect genetic effects

More Related Videos

Designing Automated, High-throughput, Continuous Cell Growth Experiments Using eVOLVER
07:26

Designing Automated, High-throughput, Continuous Cell Growth Experiments Using eVOLVER

Published on: May 19, 2019

11.9K
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

899

Related Experiment Videos

Last Updated: May 12, 2025

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

3.1K
Designing Automated, High-throughput, Continuous Cell Growth Experiments Using eVOLVER
07:26

Designing Automated, High-throughput, Continuous Cell Growth Experiments Using eVOLVER

Published on: May 19, 2019

11.9K
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

899

Area of Science:

  • Evolutionary biology
  • Behavioral genetics
  • Quantitative genetics
  • Ecological genetics

Background:

  • Evolutionary feedbacks occur when evolutionary changes in one generation modify the environment for subsequent generations.
  • Indirect genetic effects (IGEs) are a key mechanism driving evolutionary feedbacks, but experimental evidence is limited.
  • Understanding evolutionary feedbacks is crucial for predicting responses to environmental change, including climate change and agricultural practices.

Purpose of the Study:

  • To experimentally investigate the impact of evolutionary feedbacks on the rate and pattern of behavioral evolution.
  • To quantify the influence of different types of social feedbacks (positive, negative, none) on the evolution of aggression.
  • To determine if social dynamics evolve under different feedback conditions.

Main Methods:

  • Experimental evolution using fruit fly (Drosophila melanogaster) populations.
  • Manipulation of the social environment to allow or limit evolutionary feedbacks during selection for male-male aggression.
  • Comparison of evolutionary trajectories across populations experiencing positive, negative, or no feedbacks, plus unselected controls.

Main Results:

  • Populations with negative feedbacks exhibited the slowest evolutionary increase in aggression.
  • Populations with positive feedbacks evolved significantly higher levels of aggression ('supernormal' aggression).
  • Evolution of underlying social dynamics was observed exclusively in the negative feedback treatment.

Conclusions:

  • Indirect genetic effects-mediated evolutionary feedbacks significantly alter the pace and direction of behavioral evolution.
  • The type of feedback (positive vs. negative) critically influences the magnitude of evolutionary change.
  • Experimental manipulation of feedbacks provides a powerful tool for dissecting the mechanisms of evolutionary change.