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

Skewness01:06

Skewness

19.3K
The measures of central tendency calculated from a data set may not reveal much about its intrinsic distribution. If a plot is made of the data set’s values, the mean and the median may not only differ, but also the plot may have more values on one side of the central tendencies. Such a data set is said to be skewed towards that side.
The longer the tail of the plot on one side, the more skewed it is. The skewness of a data set’s values suggests that the measures of central tendency...
19.3K
Reproductive Cloning01:27

Reproductive Cloning

32.8K
Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
In SCNT, an egg cell is taken from an animal and its nucleus is removed, creating an enucleated egg. Then a somatic...
32.8K
Types of Skewness01:09

Types of Skewness

18.7K
If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are skewed to the right, then the distribution is called positively skewed. Conversely, if the plot is skewed to the left, the distribution is called negatively skewed.
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
18.7K
Asexual Reproduction02:38

Asexual Reproduction

37.5K
Asexual reproduction allows plants to reproduce without growing flowers, attracting pollinators, or dispersing seeds. Offspring are genetically identical to the parent and produced without the fusion of male and female gametes.
37.5K
Overview of the Reproductive System01:31

Overview of the Reproductive System

5.7K
The reproductive system generates offspring, ensuring the survival of the species. In humans, the reproductive system is complex and involves a variety of organs and hormones that work together to ensure successful reproduction.
The gonads, or primary reproductive organs, produce gametes and sex hormones. In males, the testes produce spermatozoa and testosterone, which is responsible for developing secondary male sex characteristics, including a deeper voice, larger muscles, facial and body...
5.7K
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

5.1K
Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra....
5.1K

You might also read

Related Articles

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

Sort by
Same author

Seasonal variation of Campylobacter types from human cases, veterinary cases, raw chicken, milk and water.

Journal of applied microbiology·1999
Same author

Immunogenicity and protective efficacy of a gE, gG and US2 gene-deleted bovine herpesvirus-1 (BHV-1) vaccine.

Vaccine·1999
Same author

Team effectiveness: beyond skills and cognitive ability.

The Journal of applied psychology·1999
Same author

Assessment of an automated solid phase competitive fluoroimmunoassay for benzoylecgonine in untreated urine.

Journal of immunological methods·1999
Same author

Patient Outcomes Research Teams: contribution to outcomes and effectiveness research.

Annual review of public health·1999
Same author

Lack of influence of test meal fatty acid composition on the contribution of intestinally-derived lipoproteins to postprandial lipaemia.

The British journal of nutrition·1999
Same journal

Traffic Reduction during COVID-19 Lockdowns Benefited Species Already Tolerant of Noise Pollution: An Acoustic Analysis.

The American naturalist·2026
Same journal

On Pachycephalosaurs, Trade-Offs, and the Historical Genesis of Sociosexual Display Structures.

The American naturalist·2026
Same journal

Structured Landscapes Promote Persistence by Favoring Prudent Predators.

The American naturalist·2026
Same journal

Can Carbon Economy Explain Leaf Dynamic Seasonality in a Tropical Seasonal Rainforest?

The American naturalist·2026
Same journal

Behavior and Physiology Outpace Form When Linking Traits to Ecological Responses within Populations: A Meta-Analysis.

The American naturalist·2026
Same journal

Seminal Fluid Proteins as Regulation Factors for Optimizing Reproduction: A Modeling Approach.

The American naturalist·2026
See all related articles

Related Experiment Video

Updated: Feb 12, 2026

Ultrasonography in Experimental Reproductive Investigations on Rats
07:59

Ultrasonography in Experimental Reproductive Investigations on Rats

Published on: December 2, 2017

15.1K

Reproductive Skew in Multimember Groups.

R A Johnstone, R Woodroffe, M A Cant

    The American Naturalist
    |March 28, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Reproductive skew in cooperative societies is complex. Models show that in three-member groups, relatedness among subordinates significantly impacts dominant incentives and group stability, unlike in two-member groups.

    Keywords:
    animal societiescooperative breedingrelatednessreproductive skew

    More Related Videos

    Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
    04:37

    Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

    Published on: May 12, 2019

    16.4K
    Collection of Post-mating Semen from the Female Reproductive Tract and Measurement of Semen Liquefaction in Mice
    12:06

    Collection of Post-mating Semen from the Female Reproductive Tract and Measurement of Semen Liquefaction in Mice

    Published on: November 18, 2017

    17.7K

    Related Experiment Videos

    Last Updated: Feb 12, 2026

    Ultrasonography in Experimental Reproductive Investigations on Rats
    07:59

    Ultrasonography in Experimental Reproductive Investigations on Rats

    Published on: December 2, 2017

    15.1K
    Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
    04:37

    Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

    Published on: May 12, 2019

    16.4K
    Collection of Post-mating Semen from the Female Reproductive Tract and Measurement of Semen Liquefaction in Mice
    12:06

    Collection of Post-mating Semen from the Female Reproductive Tract and Measurement of Semen Liquefaction in Mice

    Published on: November 18, 2017

    17.7K

    Area of Science:

    • Behavioral Ecology
    • Evolutionary Biology
    • Game Theory

    Background:

    • Reproductive skew, where reproduction is concentrated in dominant individuals, varies across cooperative societies.
    • Existing models often simplify group dynamics to dominant-subordinate pairs or identical subordinates.
    • Dominant individuals may offer incentives to retain subordinates, but this is poorly understood in larger groups.

    Purpose of the Study:

    • To develop an evolutionary stable strategy model for reproductive skew in three-member groups.
    • To investigate how individual variation among subordinates affects group stability and reproductive skew.
    • To determine if conclusions from two-member models generalize to larger, more complex social structures.

    Main Methods:

    • Developed an incentive-based evolutionary stable strategy model.
    • Incorporated variation in subordinate independent reproduction opportunities, group productivity contributions, and relatedness to the dominant and other subordinates.
    • Analyzed scenarios with three group members, including varying relatedness parameters.

    Main Results:

    • Conclusions from two-member models do not universally apply to three-member groups.
    • Relatedness among subordinates can influence a dominant's decision to offer staying incentives, a factor not present in two-member models.
    • Both reproductive skew and group stability are dependent on relatedness within the group and individual subordinate traits.

    Conclusions:

    • Group size and the relatedness structure among members are critical factors in understanding reproductive skew.
    • Incentives offered by dominants are influenced by the presence and traits of multiple subordinates.
    • The productivity gains from adding a third member critically determine the impact on skew and stability.