Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Hybrid Zones

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

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).

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

Speciation Rates

Speciation Rates

Genetics of Speciation

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.

Transduction

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...

You might also read

Related Articles

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

Sort by

Same authorSame journal

Enter Salmon: Trophic risk mediates riverine barrier-crossing behaviours of parr.

The Journal of animal ecology·2026

Same author

Projecting future damage costs of non-native species using combined dynamical and cost-density equations.

Ecological applications : a publication of the Ecological Society of America·2026

Same author

Dark diversity framework reconciles Darwin's naturalization conundrum for freshwater fish invasions.

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

Same author

Native and Non-Native Populations Respond Unevenly to River Barrier Removals.

Global change biology·2026

Same author

Author Correction: Using species ranges and macroeconomic data to fill the gap in costs of biological invasions.

Nature ecology & evolution·2025

Same author

Ecological similarity governs non-native fish establishment while human pressure and native diversity shape invasion richness.

Science advances·2025

Search research articles

Related Experiment Video

Updated: Sep 18, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

Hybridisation primes population invasiveness under environmental change.

Ross N Cuthbert¹

¹Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, UK.

The Journal of Animal Ecology

|June 20, 2025

Summary

Genetically distinct invasive populations of the killer shrimp (Dikerogammarus villosus) show varied responses to environmental stress. Their hybrids possess enhanced performance, suggesting hybridization may boost invasion success under climate change.

Keywords:

adaptation biological invasion dissolved oxygen environmental change non‐native species physiology temperature warming

More Related Videos

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health

Published on: October 9, 2017

Related Experiment Videos

Last Updated: Sep 18, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health

Empirical, Metagenomic, and Computational Techniques Illuminate the Mechanisms by which Fungicides Compromise Bee Health

Published on: October 9, 2017

Area of Science:

Ecology
Evolutionary Biology
Environmental Science

Background:

Biological invasions pose significant global environmental threats, causing extinctions and economic losses.
Invasiveness assessments often overlook intraspecific population differences, which can be crucial under environmental gradients.
The 'killer shrimp' Dikerogammarus villosus is a high-impact invasive species with distinct invasive populations.

Purpose of the Study:

To compare the physiological responses of two genetically distinct invasive populations of Dikerogammarus villosus to environmental stresses.
To assess the performance of intraspecific hybrids between these populations under stress.
To understand how intraspecific variation and hybridization influence invasion success in changing environments.

Main Methods:

Experimental comparison of physiological responses between two Dikerogammarus villosus populations.
Assessment of intraspecific hybrid performance under simulated environmental stresses.
Analysis of metabolic responses to climate change-associated stressors.

Main Results:

Distinct invasive populations of Dikerogammarus villosus exhibited different physiological responses to environmental stress.
Intraspecific hybrids between these populations showed significant performance advantages under stress.
Hybridization may enhance invasion success by increasing genetic diversity and phenotypic capacity.

Conclusions:

Intraspecific variation is critical for understanding and managing invasive species.
Hybridization between distinct invasive populations can confer a significant advantage under environmental stress.
Findings have implications for predicting and managing invasive species spread in the face of climate change.