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

Genetics of Speciation02:16

Genetics of Speciation

19.1K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.1K
Formation of Species01:31

Formation of Species

39.1K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
39.1K
Conservation of Small Populations02:04

Conservation of Small Populations

13.1K
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...
13.1K
Asexual Reproduction02:38

Asexual Reproduction

30.3K
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.
30.3K
What is a Species?01:17

What is a Species?

43.8K
Overview
43.8K
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

58.1K
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).
58.1K

You might also read

Related Articles

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

Sort by
Same author

Tangled Evolutionary History: Genetically Divergent Taxa and Hybrids Characterise Lantana Invasions in Australia.

Evolutionary applications·2026
Same author

Environment and Pollen Diversity Differentially Affect the Gut Microbiomes of Introduced Honeybees and Bumblebees.

Evolutionary applications·2026
Same author

Global sampling decline erodes science potential of natural history collections.

Nature communications·2025
Same author

A vision of human-AI collaboration for enhanced biological collection curation and research.

Bioscience·2025
Same author

SpeciMate: Improving metadata extraction from digitised biological specimens.

Biodiversity data journal·2025
Same author

Children's detection of online misinformation.

Cognition·2025

Related Experiment Video

Updated: Jun 7, 2025

Embryo Rescue Protocol for Interspecific Hybridization in Squash
09:15

Embryo Rescue Protocol for Interspecific Hybridization in Squash

Published on: September 12, 2022

2.6K

Genetic and Habitat Rescue Improve Population Viability in Self-Incompatible Plants.

Francisco Encinas-Viso1, Peter H Thrall2, Andrew G Young1

  • 1Centre of Australian National Biodiversity Research CSIRO Canberra Australian Capital Territory Australia.

Evolutionary Applications
|November 11, 2024
PubMed
Summary
This summary is machine-generated.

Genetic rescue, introducing new S alleles, is the most effective strategy for saving self-incompatible plant populations. Combining genetic and habitat rescue significantly boosts persistence and mate availability in isolated populations.

Keywords:
Allee effectsS allelesdemographic rescuegenetic rescueself‐incompatibility

More Related Videos

At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques
07:10

At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques

Published on: February 11, 2020

7.1K
Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions
07:03

Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions

Published on: November 6, 2016

10.5K

Related Experiment Videos

Last Updated: Jun 7, 2025

Embryo Rescue Protocol for Interspecific Hybridization in Squash
09:15

Embryo Rescue Protocol for Interspecific Hybridization in Squash

Published on: September 12, 2022

2.6K
At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques
07:10

At-Risk Butterfly Captive Propagation Programs to Enhance Life History Knowledge and Effective Ex Situ Conservation Techniques

Published on: February 11, 2020

7.1K
Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions
07:03

Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions

Published on: November 6, 2016

10.5K

Area of Science:

  • Ecology and Evolutionary Biology
  • Conservation Genetics
  • Plant Population Dynamics

Background:

  • Habitat fragmentation and environmental change threaten plant survival, particularly self-incompatible (SI) species.
  • SI plants are obligate outcrossers requiring high mate availability, making them vulnerable to small, isolated populations.
  • Population decline in SI species can be addressed by habitat, demographic, or genetic rescue strategies.

Purpose of the Study:

  • To model and quantify the effectiveness of different rescue strategies for small, isolated SI plant populations.
  • To assess the impact of habitat, demographic, and genetic rescue, individually and in combination.
  • To determine optimal management strategies for enhancing SI plant population viability.

Main Methods:

  • Utilized a spatially and genetically explicit individual-based model.
  • Simulated demography of a small (N=250) isolated SI population over 500 years.
  • Evaluated the effects of varying rescue strategies on population fitness and viability.

Main Results:

  • Individual genetic rescue proved most effective for improving fitness and population viability.
  • Demographic rescue with a high number of individuals (N>30) improved viability by 55% in near-extinct populations.
  • Combined genetic and habitat rescue yielded the best outcomes, increasing persistence (>30%) and mate availability (>50%).
  • Introducing a small proportion (20%) of new S alleles significantly enhanced mate availability and persistence.

Conclusions:

  • Genetic rescue, specifically introducing new S alleles, is crucial for the viability of small, isolated SI plant populations.
  • Combining genetic rescue with habitat improvements offers the most robust strategy for conservation.
  • Management should focus on increasing genetic diversity and habitat suitability to counteract stochasticity and density dependence.